To be updated
Mulberry Breeding and Genetics
Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :All India Coordinated experimental trial for mulberry (AICEM) Phase-II.
Personnel : Dutta AK
Funding Source :CSB, Bangalore
Project Period :2001-2005
Objectives :Evaluation of superior mulberry varieties suitable for agro climatic zone of Assam.
Results/Recommendations :It is observed that leaf yield, moisture retention capacity of MV8 (22.98m ha-1yr-1) and MV4 (20.58m ha-1yr-1) are at par in respect of higher production. MV8 and MV4 are superior entries in respect of leaf yield and bioassay studies also indicated better ERR and SR% and suitable for agro climatic conditions of Assam.
Project outcome: MV8 and MV4 new varieties identified for agro climatic conditions of Assam.
Source of Information :Annual Report:2004-05
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Agronomy
Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Assessment of phosphorus and potassium requirements for mulberry based on Mitscherlich Bray concept.
Personnel :Dutta AK
Funding Source :CSB, Bangalore
Project Period :2001-2005
Objectives :To identify a mechanism for phosphatic and potassic fertilizer based on soil nutrient status.
Results/Recommendations :There is a relation between the doses of fertilizer and biomass production. But by this method actual doses of phosphatic and potassic fertilizers are used in 3’x3’ spacing of mulberry variety S1635 are treated as T1=N150Po K50, T2=N150P15K50, T3=N150P30K50, T4=N150P45K50, T5=N150P60K50 and another proportion is applied as T1=N150P50K0, T2=N150P50K15, T3=N150P50K30, T4= N150P50K45, T5=N150P50K60. But by this method actual doses of phosphatic and potassic fertilizers can be estimated by putting soil test value and biomass production.
Project outcome :A ready reckoner of phosphatic fertilizer recommendation for mulberry for Brahmaputra valley alluvial soil condition has been developed.
Source of Information :Annual Report: 2004-05
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Silkworm Breeding and Genetics
Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Survey, collection and management of various available indigenous and exotic breeds of silkworm.
Personnel :Thangavelu K, Mamoni Sahu
Funding Source :CSB, Bangalore
Project Period :1982-1983
Objectives :To survey collection and maintenance of various indigenous and exotic breeds of silkworm.
Results/Recommendations :Sarupat is better than Maria with respect to fecundity and ERR and also larval duration is shorter. Cocoon characters appear to be in favour of Maria. The comparison of bivoltine and multivoltine races indicate considerable advantages in rearing the bivoltine, which is quite successful during September/October.
Source of Information :Annual Report: 1982-83
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Silkworm Physiology
Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Effect of Potassium Iodide on mulberry silkworm.
Personnel : Saratchandra B, Thangavelu K, Bania HR
Funding Source :CSB, Bangalore
Project Period :1983-1984
Objectives :To study effect of potassium iodide on mulberry silkworm.
Results/Recommendations : Treatment with potassium iodide has many effects on the silkworm Bombyx mori L of the race, Assamese Sarupat. Larval period is reduced by two days on an average. The larval weight cocoon weight of male, shell weight of female and silk ratio% of female were observed to be higher in the treatment.
Source of Information :Annual Report:1983-84
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Effect of the drug calcium sandoz on mulberry silkworm physiology.
Personnel :Thangavelu K, Saratchandra B, Bania HR
Funding Source :CSB, Bangalore
Project Period :1983-1984
Objectives :To study the effect of Calcium Sandoz on the silkworm Bombyx mori of Assamese Sarupat race.
Results/Recommendations :
· The larval period is reduced by 3-5 days in all treated lots.
· The 50 and 100mg/ml solution treated lots have given better performance with regard to almost all the factors.
Source of Information :Annual Report:1983-84
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Entomology
Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Studies on the ecology, bionomics, prevention and control of the uzi fly Exorista sorbillans, Tricholyga bombycis Beek.
Personnel :Sahu AK, Thangavelu K
Funding Source :CSB, Bangalore
Project Period :1982-1983
Objectives :
· To study the ecology and bionomics of uzi fly.
· To study seasonal incidence of uzi fly infestation.
· Interspecific preference of uzi fly.
· Studies on pupation in uzi fly Exorista sorbillans Weid.
Results/Recommendations :Eri worms are more aggressive towards the approach of the fly, which was not found in mulberry silkworms, which may probably be attributed to the extent of domestication. The strange pupation behaviour indicates population regulatory process within the species as pupation within the silkworm cocoon, leads to mortality of its individuals. The uzi fly population regulates its individuals through population regulatory process as over population is not in the best interest of any population.
Source of Information :Annual Report: 1982-83
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Studies on the pests of mulberry and their control measures.
Personnel :Singh BK, Thangavelu K
Funding Source :CSB, Bangalore
Project Period :1982-1983
Objectives :To study on the insect pests of mulberry.
Results/Recommendations :Insects like Lepidoptera, Coleoptera and Thysanoptera infest mulberry plants and the attack of these pests is through sporadic. Mechanical control by hand picking and destruction is effective, while removal of weeds and clearing of grasses near about the plantation are essential. Sprinkling of 4% formalin solution on the collected samples is also effective.
Source of Information :Annual Report: 1982-83
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Survey of uzi fly infestation at rearers level.
Personnel :Saha L, Chanda S
Funding Source :CSB, Bangalore
Project Period :1995-1996
Objectives :To find out maximum uzi fly infestation period.
Results/Recommendations :In this study survey conducted to assess crop loss at rearers level due to uzi fly infestation revealed 0.16% infestation during April-May, 0.13% during June, 0.27% during July-August, 0.30% during September and 0.26% during October.
Source of Information :Annual Report:1994-95
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Non-Mulberry (Eri Culture)
Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Exploration of gene pool in eri silkworm through conservation and evaluation.
Personnel :Subba Rao G, Mariswamy N
Project Period :1975-1980
Objectives :
· To study collection of eri germplasm.
· To study evaluation and identification of germplasm.
Results/Recommendations :The germplasm bank includes 16 lines isolated from heterogenous eri stocks Diphu, Demow, Dhenubhonga and from hybrid eri silkworm Philosamia cynthia x Phylosamia ricini.
Source of Information :Annual Report: 1980-81
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Statistical study of quantitative characters of eri races.
Personnel : Dipen Duarah
Funding Source :CSB, Bangalore
Project Period :1977-1978
Objectives :To study quantitative statistical characters of eri races.
Results/Recommendations :All characters indicated significant differences for economic characters, except for SR% within the lines of CMERs at 10th generation. However, PRW-3 line gave high SR% 13.05 followed by PRWS7 and PRG4 with 12.08% and 12.74% respectively. Differences are significant for characters namely number of eggs/layings, weight of 10 matured larvae and weight of single cocoon within the lines of Demow stock.
Source of Information :Annual Report: 1977-78
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Evaluation of package of practices for castor cultivation.
Personnel :Md.Isa, Joshi KL, Thangavelu K, Yadav GS, Sinha SS
Funding Source :CSB, Bangalore
Project Period :1978-1983
Objectives :To study the evaluation of package of practices for castor cultivation.
Results/Recommendations :
· It was evident from the data that T3 treatment (ie., 50% plucking of leaves) offers the best advantage by way of yielding on an average 7430 kg leaves and 995 kg seeds per hectare. The loss of seed yield due to leaf plucking was 13.63% as compared to the control.
· The seed loss is, however, minimum (10.07%) in 25% leaf plucking but the leaf yield was only 3,903.44 kg/ha when compared to 13.63% seed loss and leaf yield of 7,430 kg/ha in 50% leaf plucking.
· Thus 50% leaf plucking offers dual advantage of more leaf yield for eri culture and simultaneously castor seeds for industrial/domestic purposes.
Source of Information :Annual Report: 1982-83
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Collection and evaluation of castor strains.
Personnel : Md.Isa, Yadav YS, Sinha SS
Project Period :1979-1982
Objectives :To study the collection and evaluation of castor strains from natural variants.
Results/Recommendations :
· It was observed from the report that RC4 (Diphu red) to be the best among all the castor strains under consideration.
· Out of 30 varieties of castor, 26 have successfully completed their life cycle. It was evident from the data that RC3, RC4, RC5, RC6, RC8, RC9, RC11, RC19 and RC38 are comparatively better varieties, but out of these, RC4 (Diphu non-bloomy red), RC5, RC9, RC6 seem to be promising varieties with respect to average number of nodes, branches, leaf size, length of internode, leaves/plant and weight of 1000 mature leaves.
Source of Information :Annual Report: 1981-82
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Isolation and fixation of the pure lines of eri silkworm.
Personnel :Kakaty PK , Prasad GK, Sinha SS
Funding Source :CSB, Bangalore
Project Period :1979-1984
Objectives :To isolate the pure lines of eri silkworm for evaluation for cocoon characters/fecundity etc.
Results/Recommendations :Available data indicate that plain strains of Philosamia ricini have produced the larvae with lesser body weight (6.69 g for yellow and 6.65 g for greenish blue) than spotted strains (7.01 g for yellow and 7.12 g for greenish blue).
Larval period was more with spotted strains (23.4days for yellow and 23.25 days for greenish blue) than plain strains (22.76 days for yellow and 22.62 days for greenish blue).
The values of shell ratio (%), fecundity and hatching (%) were higher in spotted strains (yellow greenish blue) than plain. It was also observed that greenish blue strain was superior to yellow with respect to larval period (22.9 days), shell ratio (12.23%), fecundity (324 eggs/dfl) and hatching percentage (89.63).
Source of Information :Annual Report:1983-84
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Isolation and fixation of pure lines of eri silkworm (Philosamia ricini Hutt).
Personnel :Vishwarkarma SR, Kakaty PK, Thangavelu K
Funding Source :CSB, Bangalore
Project Period :1980-1982
Objectives :To study isolation and fixation of pure lines of eri silkworm.
Results/Recommendations :The decreasing trend in fecundity indicates the inbreeding depression in pure lines. The reduction in fecundity increases with the number of generations, however, other characters do not show any inbreeding depression.
Source of Information :Annual Report:1981-82
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Interspecific hybridization between Philosamia ricini and Phylosamia cynthia.
Personnel :Prasad GK, Vishwakarma S, Sinha SS, Thangavelu K.
Funding Source :CSB, Bangalore
Project Period :1980-1982
Objectives :To study interspecific hybridization in Philosamia ricini and Philosamia cynthia.
Results/Recommendations :Larval and pupal homozygosity has been achieved from fourth and fifth generation respectively. Inbreeding depression is evident in respect of fecundity and the number of eggs/laying has decreased steadily from 488 to 250 and 366 to 156 in white larvae with red cocoons and green larvae with red cocoon respectively. The steady increase in the larval period may be due to seasonal influence.
Source of Information :Annual Report:1981-82
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Studies on spinning aspects of eri and muga cocoons.
Personnel : Goshwami RC.
Funding Source :CSB, Bangalore
Project Period :1980-1981
Objectives :To study the spinning efficiency of Takuri for eri cocoons and also comparative studies on eri spinning appliances.
Results/Recommendations :
· It could be seen that the production of eri yarn of 19.28snm was 22.20g/manday (i.e., 8 hours). In other words, it would require 45 mandays for producing 1kg yarn of about 10snm. The data further reveals that 728.76g of yarn could be obtained with Takuri from 1kg of eri cut cocoons.
· It could be seen from the above that if the cost factor ratio is taken into account, the spinning of eri yarn over Takuri and Choudhury spinning wheel presents negative economics. Despite this Takuri is widely used throughout Assam/Northeastern region for the simple reason that the spinning is taken up during leisure hours by the family inmates, in particular the women folk. Relevant charges as such are never taken into consideration and the time factor is also not a problem as everything is done at domestic level. Likewise, the cost of raw materials (i.e., cocoons) is also not considered as it is produced by themselves.
· It is only in case of spinning with Ambar charkha to get a net income of Rs.24.5 for every kg of yarn produced. This level of income could still be improved upon with 6 spindled charkha.
Source of Information :Annual Report: 1980-81
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Evaluation of package of practices for Tapioca cultivation with reference to eri culture.
Personnel :Md.Isa, Thangavelu K, Sinha SS
Funding Source :CSB, Bangalore
Project Period :1981-1984
Objectives :To study effect of leaf harvestation and spacing on the growth and tuber yield of Tapioca.
Results/Recommendations : The results indicate that leaf plucking certainly affect the tuber yield adversely. But loss of tuber due to leaf plucking is minimum if leaves are plucked between 4-5, 5-6 and 8-9 months of plantation. Thus the minimum loss of tuber is 29.52%.
Data revealed that branches are maximum (8.17) in T4 treatment followed by T5 (7.87), T8 (6.07), T2 (5.14) and T1 (1.14). Similar pattern of gradation can be seen for number of nodes and plant height.
The leaf yield is maximum in T1 (10,250kg/ha) followed by T2 (7,846 kg/ha), T5 (7,082 kg/ha), T3 (5900 kg/ha), T4 (5,760 kg/ha).
Tuber yield is maximum in T4 (8,057.14 kg/ha) followed by T2 (6,498.93 kg/ha), T3 (6,025 kg/ha), T5 (5,632.14 kg/ha and T1 (2,221 kg/ha).
From the present observation it can be said that spacing of 120 cm (between plant to plant and row to row is optimum for realizing maximum tuber yield under the agro climatic condition prevailing in Assam.
Source of Information :Annual Report:1983-84
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Acclimatization of eri silkworm on different food plants.
Personnel :Thangavelu K, Joshi KL, Saratchandra B
Funding Source :CSB, Bangalore
Project Period :1981-1984
Objectives :To study acclimatization of the silkworm on different food plants.
Results/Recommendations :The average larval weight, larval period, effective rate of rearing, shell ratio, fecundity and hatching are almost similar for the lots fed with leaves of castor and kesseru. Taking seasonal influence into consideration it can be seen that reduction in larval duration and ERR were maximum for castor and kesseru during the quarter January to March.
Source of Information :Annual Report:1983-84
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Evaluation of package of practices for cultivation of eri host plant.
Personnel :Borgohain PN, Singh BK and Charkravarty
Funding Source :CSB, Bangalore
Project Period :1986-1988
Objectives :
· To find out high foliage and tuber yielding of Tapioca variety.
· To sort out the high foliage and seed yield of castor varieties.
· To find out the optimum spacing of Kesseru.
Results/Recommendations :The minimum leaf yield was recorded in H-643 followed by H97, H1423 and local. Highest tuber yield was recorded in H97 followed by H1423. Out of 3 perennial castor varieties Tarai-4 showed highest average height, leaf yield and seed yield. The maximum leaf yield during the year 1990 in two harvests was recorded in T1. 1x1m Spacing followed by 17770 kg/ha/yr in two harvests in T2.
Source of Information :Annual Report:1987-88
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat Jorhat Assam (RERS).
Project Title :Multilocational trial of different eri silkworm.
Personnel :Phukan JCD, Gogoi SN, Chakravarty R
Funding Source :CSB, Bangalore
Project Period :1986-1987
Results/Recommendations :Green blue plain showed good performance in all the biological parameters studied that is larval weight (6.7cm), SR% (14.23), ERR%(80.29) and fecundity (347).
Source of Information :Annual Report:1986-87
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Survey, collection and isolation, maintenance of different eco-races of eri silkworm.
Funding Source :CSB, Bangalore
Project Period :1988-1989
Results/Recommendations :The experiment was initiated in the year 1988 with the collection of 5 eco-races and at present this Institute is maintaining 7 eco-races.
Source of Information :Annual Report:1988-89
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Isolation of eri strains based on larval body colour and marking.
Funding Source :CSB, Bangalore
Project Period :1988-1989
Objectives :To sort out the different strains of eri silkworm.
Results/Recommendations :The experiment for isolation of eri strains was initiated in the year 1988 and so far GB plain, yellow spotted, yellow plain, greenish blue spotted of Titabar race and yellow plain, GB plain, yellow Zebra, G.B Zebra of Borduar race were isolated based on larval body and markings.
Source of Information :Annual Report:1988
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Rearing performance of eri silkworm on different host plants.
Personnel :Borah B, Bhuyan N, Borah A, Samson MN
Funding Source :CSB, Bangalore
Project Period :1988-1989
Objectives :
· To sort out the best perennial castor varieties of eri silkworm.
· To sort out the best Tapioca variety for eri silkworm.
Results/Recommendations :ERR 10000 larvae was maximum in T3 (9333) followed by T4 (8968), Kalpi (8733) and local (7100). Shell weight was maximum in local variety (0.42 g) followed by Tarai-4 (0.38 g), T3 (0.37 g) and Kalpi-6 (0.34 g). The maximum ERR/10,000 larvae were recorded in local variety 5091 followed by H-1423 (2980), H648 (2622) and H97 (2185). Cocoon weight was minimum in the local variety (2.11 g) followed by H1423 (2.07 g), H97 (2.02g) and H648 (1.49 g).
Source of Information :Annual Report:1988-89
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Economics of ericulture.
Funding Source :CSB, Bangalore
Project Period :1988-1989
Objectives :To find out required mandays for cultivation of castor in 1000 Sq.mt. of land.
Results/Recommendations :
· Data revealed that 33 mandays were required for plantation.
· Weeding, light hoeing and sowing of castor seeds.
Source of Information :Annual Report:1988-89
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Studies on the rate of consumption of food by eri silkworm.
Funding Source :CSB, Bangalore
Project Period :1989-1990
Objectives :To study the rate of consumption of food by eri silkworm.
Results/Recommendations :The consumption and ingestion of castor leaves was less (84.51% and 68.34%) respectively as compared to Tapioca (90.21% and 69.18%) respectively.
Source of Information :Annual Report:1989-90
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Studies on the insect pests on eri host plant.
Personnel :Bhuyan N, Barah A, Samson MN
Funding Source :CSB, Bangalore
Project Period :1989-1990
Objectives :To find out the insect pests of castor and Kesseru.
Results/Recommendations :The following pests were recorded as pest of eri host plants (castor).
· Bihar hairy caterpillar (Diacrisia obliqua).
· Jassids (Empoasca flavenscens).
· Pod borrer (Spodoptera litura).
· Capsule borrer (Dichocrosis punctiferalis).
· Termite infestation on bark of Kesseru was also observed.
Source of Information :Annual Report:1989-90
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Evaluation of economics of eri culture by raising castor.
Funding Source :CSB, Bangalore
Project Period :1989-1990
Results/Recommendations :A total of 4,700 kg of leaf can be harvested from 1 acre area plot, which will be sufficient to rear 470 dfls in a year.
Source of Information :Annual Report:1989-90
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Evaluation of package of practices for cultivation of eri host plant/Effect of spacing on the growth and foliage yield of Kesseru.
Funding Source :CSB, Bangalore
Project Period :1990-1992
Objectives :To find out the optimum spacing of Kesseru.
Results/Recommendations :The experiment initiated in the Year 1986 and the data during the concluding year (1992) reveal that the T1 recorded the maximum of leaf yield of 28,339 kg/ha/yr and it was followed by T2 (16,363 treatment with kg/ha/yr). Though the leaf yield of 3 replication each or in T1 was more, the girth size of the plants were very poor. The treatments were as follows.T1=1x1 m, T2=2x2 m, T3=3x3 m.
Source of Information :Annual Report: 1991-92
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Evaluation of package of practices for cultivation of Kesseru/Studies on the effect of NPK on growth and leaf yield of Kesseru.
Funding Source :CSB, Bangalore
Project Period :1990-1994
Objectives :To find out effect of NPK on the growth and leaf yield of Kesseru.
Results/Recommendations :NPK doses of 125:75:25 kg/ha/yr in two split doses in the month of June and December showed highest leaf yield of 11619.43 kg/acre/yr and this can support rearing of 1162 dfls/year.
Source of Information :Annual Report:1993-94
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Project No.:CMER
Organization : Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Evaluation of package of practices for cultivation of castor.
Personnel :Not available
Funding Source :CSB, Bangalore
Project Period :1993-1994
Objectives :Not available
Results/Recommendations :In the spacing experiment of castor, highest leaf yield was recorded in 0.75 x 0.75 spacing and it was 18710.03 kg/ha/yr. But percentage of damaged leaf (25.16%) was more in this treatment. But 1x1 m spacing recorded good quality leaves with the highest ERR% of 93.00.
Source of Information :Annual Report:1993-94
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Studies on the economics of eri culture with castor cultivation.
Personnel : Saha L, Chanda S
Funding Source :CSB, Bangalore
Project Period :1994-1996
Objectives :To find out economics of eri culture per unit area with castor plantation.
Results/Recommendations :In this study three treatments (T1:flower plucking followed by recording of leaf yield T2:recording of both seed and leaf yield and T3:control-recording of seed yield without leaf plucking). Average plant height ranged from 4.04mts in T3 to 4.31mt in T1. Average leaf yield per hectare per year was significantly higher in T1 (15,263.33kg) followed by T2 (12,563.67kg). Similarly, seed yield was significantly higher in T3 (452.45kg) as compared to 386.47kg in T2. Profitability analysis revealed that maximum net profit of Rs.24, 948.00 can be obtained through leaf only by plucking the flowers. About 17.70% leaf yield decreased in T2.
Source of Information :Annual Report:1994-95
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Screening of high yielding castor varieties.
Personnel :Roy B, Singh LS, Deka BK
Funding Source :CSB, Bangalore
Project Period :1994-1998
Objectives :To sort out high leaf yielding castor varieties.
Results/Recommendations :In this study five perennial castor varieties namely local red, local green, Agia local, Damalgiri local and T3 were studied. Growth parameters were recorded as local red variety (height 154.66 cm, number of branches 4.26, leaf yield/plant/harvest 292.24 g, survival 85.60) local green variety (height 165.43 cm, branches 4.26, leaf yield/pl/ha 276.73 g, survival 65.60), Agia local (height 153.80 cm, branches 3.66 leaf yield/pl/ha 246.65 g, survival 82.20), Damalgiri local (height 163.73cm branches 4.43, leaf yield/pl/ha 262.96 g, survival 87.80), T3 (height 159.90cm, branches 4.16.leaf yield/pl/ha 162.35 g, survival 43.30) were found. Analysis of the above data revealed highest plant height in local green (165.43 cm) while it was lowest in Agia local (153.80cm), Leaf yield/plant/harvest was maximum in local red (292.24g) and minimum in T3 (162.36). Survival rate was highest in Damalgiri local (87.80%) and lowest in T3 (43.30%).
Source of Information :Annual Report:1997-98
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Evaluation of different eri stocks and strains.
Personnel :Saha L, Chanda S
Funding Source :CSB, Bangalore
Project Period :1995-1996
Objectives :To find out the best performance of eri eco-race and eri strains.
Results/Recommendations :In this study 7 eri stocks viz., Borduar, Khanapara, Titabar, Sille, Nongpoh, Dhenubhanga and Medipathar local were reared during different seasons in 1994-95. ERR(%) ranged from 88.70 in Nonpoh to 94.36 in Borduar. Borduar stock also showed highest fecundity (495.33). Average shell ratio was highest in Mendipathar stock being 13.58% followed by Dhenubhanga stock. The stocks are being maintained.
Eight homozygous strains isolated from Titabar and Bordaur Stocks were reared during different seasons in 1995-96. Fecundity was highest in yellow spotted (457) of the same stock. ERR% ranged between 87-88% in the strains. Shell weight was comparatively better in the stock isolated from Borduar stock. The strains are being maintained.
Source of Information :Annual Report:1994-95
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Project No.:CMER
Organization :Regional Eri Research Station, Mendipathar, Meghalaya
Project Title :Collection, conservation and evaluation of different eri host plant.
Personnel : Ray B, Singh LS, Deka BK
Project Period :1995-1997
Objectives :To sort out the promising varieties of castor.
Results/Recommendations :Total 88 varieties (82 from different parts of India and 6 from North-East India) were collected. Out of the 82 varieties collected from the other parts of India, 13 did not germinate and 20 varieties failed to survive under the agro climatic conditions of North-East. From germplasm bank performance data analysis, it was found that the rest of the varieties have the germination % ranged from 20-100%, internodal distance (cm) 2-10.70, average height 57-257 cm, leaf yield/plant/harvest 9.00-318.0 gm, seed yield/plant 3.3-123.5 gm and in local varieties collected from North-Eastern states showed germination % 60-100. Average height 100-208.5 cm, internodal distance 4-5.3cm, leaf yield/plant/harvest 230-452 gm, seed yield/plant 40.75-75.25gm. The leaf yield among the others Local red recorded the maximum of 452 gm/plant/harvested. The highest seed yield was observed in R4-859 as 125gm/pl/harvest gm
Source of Information :Annual Report :1996-97
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Breeding for improvement of eri silkworm.
Personnel :Singh LS, Debaraj V, Roy BC, Dutta RN
Funding Source :CSB, Bangalore
Project Period :1997-2000
Objectives :Evaluation of high yielding varieties/hybrids of eri silkworm to increase the eri silk production.
Results/Recommendations :
· In this study six pure lines of eri silkworm have been selected and crossed following the diallel crossing technique and conducted two trials and analyzed through Griffings method. Y2 genotype was found to be good combiner for fecundity cocoon weight, shell weight, shell ratio and absolute silk yield among others. YP was better for larval weight, cocoon weight, fecundity and absolute silk yield. Reciprocal effect analysis indicated that YS, 4BZ and 4BS may give better progenies when taken as female parents. Analysis of combining ability and heterosis ranked different crosses as Y2 x 4BS>YP x 4B2>YS x 4B2 x YP>4BS x 4B2>Y2 x YS. The above seven crosses were tried for multiple trait evaluation index after Hano-et-al (1993). It indicated superiority of Y2 x 4BS for ERR, cocoon weight, shell weight, shell ratio and absolute silk yield.
· Average rearing performance of two elite crosses Y2 x 4BS (=ES1) and 4BS x 4B12 (=ES2) for 3 consecutive field traits revealed better performance of ES1 in terms of fecundity, hatching, cocoon weight, shell weight, shell ratio and yield followed by ES2.
· Hybrid performance was found better than the pure lines of silkworm isolated based on larval colour and markings. Hybrids ES1 and ES2 were found better for exploitation than any pure line or eco-strain.
Source of Information :Annual Report:1999-2000
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Evaluation of suitable variety of castor.
Personnel :Sarmah MC, Roy BC, Dutta RN
Funding Source :CSB, Bangalore
Project Period :1997-2000
Objectives :To evolve high leaf yielding varieties for castor for block plantation with low cost involvement.
Results/Recommendations :
· In this study, 10 most promising varieties were screened out among the 41 castor varieties maintained in GPB.
· It has been found that high performance is found in local red (non-powdery) varieties. Highest leaf yield was recorded in red variety being 234.67 g/plant harvest.
· Among the 10 promising castor varieties screened local red (non-powdery) variety yielded maximum leaf and supported best rearing performance.
Source of Information :Annual Report:1999-2000
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Jorhat Assam.
Project Title :Integrated plantation systems of castor and Kesseru for eri culture.
Personnel :Sarmah MC, Debaraj V
Funding Source :CSB, Bangalore
Project Period :2000-2001
Objectives :To evolve suitable farm management for integrated plantation of castor and Kesseru.
Results/Recommendations :
· In this study local red castor was raised 2’ x 2’ m in spacing under the existing Kesseru plantation of 2 x 2 m spacing. Likewise monocrops of castor and Kesseru were also maintained as control with similar spacing for comparison. Each treatment was replicated into threes. Leaf harvest data was recorded for four times in castor and two times in Kesseru.
· From the bioassay study of integrated and monocrops it indicates that integrated system of castor and kesseru does not interfere each other in respect of leaf quality and rearing performance.
· In integrated plantation of castor between kesseru plantations no substantial gain was observed because analysis of leaf benefit.
Source of Information :Annual Report:2000-01
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Standardization of eri silkworm seed production techniques.
Personnel :Debaraj V, Dutta RN, Sarmah MC.
Funding Source :CSB, Bangalore
Project Period :2000-2002
Objectives :To evolve a suitable egg laying device and to develop a method for supply of eri silkworm eggs for improvement of eri seed production technology at commercial level.
Results/Recommendations :
· In this study two new egg laying devices namely netlon pouch (10x9x3cm) nylon net by (20x15cm) were tried for the study, where traditional kharika system of oviposition devices was considered as control. It is found that nylon net bag was found less time consuming for keeping/tying of moths, which was an additional advantage over other two treatments.
· The seasonal oviposition performance data of one year revealed that fecundity was recorded highest during November-December and lowest in February-March (370 Nos.).
· It can be inferred that eri silkworm seed supply method should be worked out on the basis of average of all seasons i.e., 380 eggs/laying.
Source of Information :Annual Report:2001-02
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Jorhat Assam.
Project Title :Improvement of eri host plant leaf yield and quality.
Personnel :Sarmah MC, Dutta RN, Debaraj Y
Funding Source :CSB, Bangalore
Project Period :2000-2002
Objectives :To bring perenniality on local red castor varieties with better growth and yield through alteration of agronomical practices.
Results/Recommendations :
· It is observed that local red castor plants raised with 1.5 x1.5 m, 2 x 2 m and 2.5 x 2.5 m and 1.0 x1.5 m spacing. From the growth parameters study it is found that 1.0 x 1.5 m spacing has a better survivability (91.67%) and leaf yield (5733.6 and 7133.7/ha/yr (kg) in 1st and 2nd year respectively) compared to other treatments. Leaf yield is more in 1 x 1.5 m spacing compared to wider spacings.
· Local red variety of castor planted at 1.0 x 1.5 m spacing and pruned at 1.0 m height during March showed highest leaf yield. It gave 344.16 leaf yield/plant/harvest (g) and 61.17% survivability and 2.93 m height.
· Local red variety of castor planted 1.0 x 1.5 m spacing and pruned at 1.0 m height during March showed highest leaf yield.
Source of Information :Annual Report:2001-2002
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Improvement of eri silkworm crop production.
Personnel : Debaraj Y, Sarmah MC, Brahma KC
Funding Source :CSB, Bangalore
Project Period :2000-2003
Objectives :To increase productivity and reduce cost of rearing with suitable techniques of rearing resulting to develop a commercially feasible technology.
Results/Recommendations :
· The experiment was initiated under the name “Standardization of platform rearing technique for eri silkworm” by developing a bamboo platform rearing technique and the performance was compared with bamboo tray, a traditional device as control.
· The data on first crop revealed that the cocoon characters were recorded little higher in tray but ERR% was recorded higher in platform with 10.2% gain over control.
· The main data of all the seasons on comparative performance of different cocoon mountages revealed that newly fabricated bamboo strips mountage showed higher good cocoon %, cocooning %. Pupation % and all the cocoon characters than jali and chandrike.
Project outcome :Platform rearing technique was developed as an improved method for eri silkworm rearing.
Source of Information :Annual Report:2001-02
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Improvement in productivity of eri host plant.
Personnel :Urmimala Hazarika, Phukan JCD, Singh KC
Funding Source :CSB, Bangalore
Project Period :2002-2005
Objectives :To determine suitable combination of NPK for quantitative and qualitative improvement of castor leaves to support eri culture.
Results/Recommendations :In this experiment castor variety (NBR1) is treated with N (60,90,120 kg/ha), two levels of P2O5 (40 and 60 kg/ha) and two levels of K2O (20 & 40 kg/ha) are applied and data revealed that maximum leaf yield (18.94t/ha/yr) was recorded under 120:40:40 kg NPK/ha against 13.15 t/ha/yr under standard dose of 90:40:20 kg NPK/ha/yr. Seed yield was maximum (624.7 kg/ha) under 90:60:40 kg NPK/ha/yr. Castor leaves grown under 120:40:40 kg NPK/ha/yr contain 3.89% N, 160 mgP/100 g,, 230 mgK/100 g and 24.32% crude protein and application of NPK @ 120:40:40 kg along with 10 ton FYM/ha/yr was significantly superior among all other treatments with respect to leaf yield with a BCR of 1.18 (without seed) and 1.21 (with seed) engaging hired labourers, while the same was found to be 4.49 (without seed) and 4.62 (with seed) was found.
Source of Information :Annual Report: 2004-05
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Project No.:CMER
Organization : Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Improvement in productivity of eri host plant.
Personnel :Urmimal Hazarika, Phukan JCD, Singh KC
Funding Source :CSB, Bangalore
Project Period :2002-2005
Objectives :To determine suitable combination of NPK for quantitative and qualitative improvement of castor leaves to support ericulture.
Results/Recommendations :In this experiment castor variety (NBR1) is treated with N (60,90,120 kg/ha) two levels of P2O5 (40 x 60 kg/ha) and two levels of K2O (20 & 40 kg/ha) are applied and data revealed that maximum leaf yield (18.94 T/ha/yr) was recorded under 120:40:40 kg NPK/ha against 13.15 t/ha/yr under standard dose of 90:60:40 kg NPK/ha/yr. Seed yield was maximum (624.7 kg/ha) under 90:60:40 kg NPK/ha/yr contain 3.89% N, 160 mgP/100 g, 230 mgK/100 g and 24.32% crude protein and application of NPK @ 120:40:40: kg along with 10 ton FYM/ha/yr was significantly superior among all other treatments with respect to leaf yield with a BCR of 1.18 (without seed) and 1.21 (with seed) engaging hired labours, while the same was found to be 4.49 (without seed) and 4.62 (with seed) was found.
Project outcome: Suitable NPK combination in 120:40:40 kg/ha/yr along with 10 T FYM/ha/yr increase more benefits in castor cultivation.
Source of Information :Annual Report:2004-05
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Non-Mulberry (Muga Culture)
Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Biological studies of muga silkworm.
Personnel : Kakaty PK
Project Period :1977-1978
Objectives :To study the seasonal behaviour of muga silk moth.
Results/Recommendations :The time of emergence of moths lies between 3 pm to 7 pm the completion of moth emergence occurs within 50 to 150 minutes. Initiation of ovulation occurs within 220 mins. to 345 mins., the longevity of fecundated moth varies from 5 to 15 days and 10 days required for hatching.
Source of Information :Annual Report: 1977-78
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Improvement of muga food plants.
Personnel :Md.Isa, Yadav YS , Sinha SS
Funding Source :CSB, Bangalore
Project Period :1978-1981
Objectives :
· To study optimum NPK level, dwarfing and spacing effect on leaf yield in som.
· To study the evolution of suitable pollarding and pruning method for soalu.
Results/Recommendations :
· T8 (N200P200K200) indicates superiority followed by T15 (FYM 6 cft) overall and other treatments and control.
· It was also found that combined shoot and root pruning treatment has the tendency to reduce the plant height. Nevertheless the leaf yield in this case is slightly less than that of shoot pruning and control.
· It was recommended that 2 x 2 mt spacing for gainful exploitation in particular for rearing of early stages of muga silkworm.
· It was observed that sprouting is earlier (within 20-30 days) in T1 then T2 (within 50 days).
Source of Information :Annual Report:1980-81
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Fabrication of muga reeling machine.
Personnel :Goswami RC
Funding Source :CSB, Bangalore
Project Period :1980-1982
Objectives :To find out suitable muga reeling machine.
Results/Recommendations :
· The data establishes the superiority of CMERS reeling machine over hand bhir and is as such gaining high demand among the muga reelers. Its efficiency could be further increased by incorporating certain improvements when this prototype is taken up for commercial manufacturing. The cost of machines is likely to be in the range of Rs.250 to Rs.300 which will be bearable of all muga reelers.
· It was also observed that the average yarn production/8 hours with CMERS, Trivedi and Choudhury reeling machines and Bhir comes to 82 g, 73.2 g, 66 g and 65 g respectively. The CMERS reeling has given higher production by12.02% over Trivedi reeling machine, 24.24% over Choudhury reeling machine and 26.15% over hand Bhir/CMERS which machine also given better performance in controlling the size of filament with 40.0 to 46.4 with respect to other reeling machines.
Source of Information :Annual Report: 1980-81
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Studies on cooking and reeling of muga cocoons.
Personnel :Goswami RC
Funding Source :CSB, Bangalore
Project Period :1980-1982
Objectives :Studies on the seasonal effects on the reeling characteristics of muga cocoons.
Results/Recommendations :
· The difference in single cocoon weight, filament length, denier etc., influence the mass reeling cooking efficiency and reelability very much. There is remarkable difference in filament length, shell weight during jarua crop are poorer in comparison to jethua and katia only. The bulk of the cocoons obtained for commercial reeling is form katia and jethua crop only.
· Results indicate that there is no difference in the tenacity of yarn at 0.3% Na2CO3 and 0.1% KOH but the increase of KOH (0.5%) decrease the tenacity of the yarn. Of two chemicals in three concentrations studied 0.3% Na2CO3 gives best result with regard to tenacity and 0.1% KOH gives best result in percentage elongation at break.
Source of Information :Annual Report:1981-82
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Project No.:CMER
Organization :Central Muga and Eri Research and Training Institute, Jorhat, Assam.
Project Title :Induction of diapause in muga silkworm
Personnel :Prasad GK, Sinha SS
Funding Source :CSB, Bangalore
Project Period :1980-1982
Objectives :To study the preservation of muga seed cocoon at high altitude.
Results/Recommendations :The data indicate that the pupal mortality varied from 12.3% to 83.2% in the test, pupae preserved at high altitude and mortality was within the first weak itself, the mortality was highest in two days old pupae and least in six days old pupae and this was observed during the first trial conducted between May-June, during which period the maximum temperature varied between 16.9°C and 22.5°C respectively and mean relative humidity was 70%. It was also clear that the live pupae preserved at high altitudes during May-June emerged after 12 to16 days. It may be inferred that preservation of pupae at high altitude in winter season (December-January) is detrimental and pupae of domesticated muga silkworm do not either over winter or diapause at high altitude.
Source of Information :Annual Report:1981-82
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Rearing performance of muga and eri silkworm.
Personnel : Vishwakarma SR, Prasad GK, Thangavelu K
Funding Source :CSB, Bangalore
Project Period :1980-1981
Objectives :To study rearing performance of muga silkworm.
Results/Recommendations :The rearing was undertaken seven times during the period under report with few overlapping broods. It could be observed from the data presented that while highest larval weight and effective yield were recorded ruing November-December brood, the average cocoon (99.20%) and cocoon weight (male-2.76 g and female 3.25 g).
Source of Information :Annual Report:1980-81
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Hatching behaviour of eri and muga silkworm.
Personnel: Prasad GK, Sinha SS.
Funding Source :CSB, Bangalore
Project Period :1980-1982
Objectives :Studies on the time of hatching of muga and eri silkworm.
Results/Recommendations :
· It was found that 80% eggs of muga silkworm hatched around 08.00 hrs in the morning while almost all hatching of eri silkworm eggs occurred exclusively between 06.00 hrs-08.00 hrs in the morning. The results indicated that both in the eri and muga silkworm the hatching is maximum around 8am and hence the favourable time for brushing operations is in between 8hrs to 10hrs. The temperature and humidity do not seem to alter the hatching time.
· The data indicate that the remarkable difference in the weight of the worms hatched on different days, the difference is noticed in both muga and eri silkworms and the trend also appears to be common in both the silkworms. The decline in weight is progressive. Thus it is clear that there exists a relationship between the weight of the worms and the day of hatching. Similar facts were established during the previous years. In case weight is an indication of the vigour of the worm then the practice of rejecting the worms hatched after third day for rearing will be ideal and for raising seed cocoons the worms hatched on the first and second days only can be considered.
Source of Information :Annual Report:1981-82
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Studies on incubation of muga and eri silkworm.
Personnel :Prasad GK, Sinha SS
Funding Source :CSB, Bangalore
Project Period :1980-1982
Objectives : Studies on the incubation of muga silkworm eggs.
Results/Recommendations :
· It is evident from the data gathered that more than the temperature the season is of great importance in hatching, 57% to 81% of eggs did not hatch in June, while 3% to 13% of eggs only failed to hatch in October. Embryonic period also shows similar seasonal variation. The embryonic period varied from 7to 15 days during September and October while the embryonic period varied from 9 to 21 days during December and January. It is clear that embryonic period is lower at higher temperature and longer at lower temperature, it may be that developmental processes are temperature dependent. The shortest embryonic period recorded in 7 days at 26°C and 30°C and highest (21 days) at 18°C.
· The weight of the freshly hatched worms indicate that the worms hatched on first day weighs more and the weight of the worms emerging on subsequent days are lesser and the decline is gradual and regular, it is assumed that the vigour of the worms emerging on first and second day as more. It is observed that the worms emerging out of the eggs incubated at higher temperature weigh more and vigorous than those incubated at lowest temperature.
Source of Information :Annual Report:1981-82
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Emergence and coupling behaviour of muga/eri silk moth.
Personnel :Prasad GK, Sinha SS
Funding Source :CSB, Bangalore
Project Period :1980-1981
Objectives :To study emergence and coupling behaviour of muga/eri silk moth.
Results/Recommendations :The combined effect of temperature and humidity on coupling has positive influence during August whereas it is negative during September and January. During October, however, while the temperature has negative, the relative humidity has positive influence on coupling.
Source of Information :Annual Report:1980-81
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Incidence of diseases in muga and eri silkworm.
Personnel :Kakaty PK, Sinha S, Prasad GK
Funding Source :CSB, Bangalore
Project Period :1981-1982
Objectives :To study the seasonal variation in the incidence of diseases in eri silkworm.
Results/Recommendations :It is evident that eri silkworms are comparatively tolerant to pathogens. Throughout the study period pebrine was not noticed and grasserie was recorded only during June and the commonest disease in eri silkworm was flacherie. The incidence of disease is high during June and there was no record of diseases during April-May and July-August. Thus it may be inferred that if eri culture is practiced as per the scientific method of rearing the loss due to diseases could be almost avoided.
Source of Information :Annual Report:1981-82
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Project No.:CMER
Organization:Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Ovipositional behaviour of silk moth.
Personnel :Prasad GK, Sinha SS
Funding Source :CSB, Bangalore
Project Period :1981-1982
Objectives :To study the ovipositional behaviour of muga silk moth.
Results/Recommendations :
· The observations recorded indicate that more than 75% of the eggs are laid on the first and second day and oviposition differs in different months.
· The maximum number of eggs were laid (240) during October and the unlaid eggs retained in the oviduct were highest in December (36.88%) and lowest in October (16.67%). It is found that inhibition factor for ovipositon, therefore it is suggested that grainage operation of muga silk moth could be conducted at 26°for obtaining more number of eggs per laying.
· The results indicate stimulating effects of scotophase on oviposition, however, the effect varied during different months from 5.27% in October and 18.70% in December.
Source of Information :Annual Report:1981-82
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Improvement in muga host plant.
Personnel :Siddiqui AA, Basumatary BK, Babu Lal
Funding Source :CSB, Bangalore
Project Period :1989-1997
Objectives :To collect different muga host plant and identify their potentialities of genetic resources for isolation of suitable genotype for muga silkworm rearing.
Results/Recommendations :So far, 14 morphotypes of som, 3 morphotypes of Genosomoi and 10 morphotypes of soalu have been collected and identified on the basis of leaf morphology, texture floral biology and sex. These are being maintained in the Germplasm Bank. Biochemical analysis of the leaves of the 14 morphotypes of som revealed high lignin content (50-90%) and less moisture content (28-48%) in non-preferred varieties as compared to the preferred ones. Bioassay of 8 morphotypes of som during the last katia crop 1996, revealed significantly higher ERR and absolute silk content ranging from 68.33% to74.67% and 81.22g to 97.57g/300 larvae in S3, S5 and S6 in comparison to other morphotypes. ERR and absolute silk contents in the control were recorded as 60.50% and 68.50gm respectively.
Source of Information :Annual Report:1996-97
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Agronomical studies in muga host plants.
Personnel :Siddiqui AA, Basumatary BK, Lal B
Funding Source :CSB, Bangalore
Project Period :1993-1996
Objectives :To determine the optimum doses of FYM and NPK for som.
Results/Recommendations :Two dose of NPK ie., 100:50:50 and 150:75:75 kg/ha along with control in 27 combinations were considered and applied to som plants in 2 split doses during April and September 1995. Growth and leaf yield records revealed 78.29% increase over control in plants, which received, 175:75:50 kg. NPK/ha followed by 66.20% and 57.05% increase over control in plants which received 150:50:50 and 175:50:50 kg NPK/ha.
Source of Information :Annual Report:1995-96
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Studies on the host plant of muga silkworm.
Personnel :Choudhury R, Dar HU, Senapati, Mech D, Pamehgam M
Funding Source :CSB, Bangalore
Project Period :1993-1996
Objectives :To improve host plants of muga silkworm for the benefit of all categories of farmers.
Results/Recommendations :
· It is observed that plants pruned during summer matured for early stage rearing in 3 months and for late age rearing after 5 months. During winter the leaves of plants get ready for early stage after 4 months and for late age after 6 months of pruning.
· Suitability of leaf quality has been confirmed by rearing conducted on pruned plants during two seasons September/October and November/December.
· Results of two rearings showed reduced larval period (days25) increased larval (12.72, wt gm) and cocoon weight (6.20g), improved ERR (31.75%), SR (8.41%) and dfls/cocoon produced .
· Study on the incidence of different pests and diseases of muga host plants revealed high infection of leaf rust during Jan to May being 80-100% in som and 100% in soalu. Leaf spot during March to May (som 73-100%)
· Amongst the pests, 100% infestation of Leaf Miner was recorded during June to September in soalu 83-100% in som. Leaf gall was recorded throughout the year in soalu.
Source of Information :Annual Report:1995-96
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Studies on the rearing technology of Muga.
Personnel : Choudhury R, Dar HU, Senapati, Mech D, M.Pamegam
Funding Source :CSB, Bangalore
Project Period :1993-1996
Objectives :To improve host plants of muga silkworm for the benefit of all categories of farmers.
Results/Recommendations :
· In this study rearing performance of muga silkworm was studied on three different food plants in different seasons.
· Data of one year of three plants showed that among the three plants som gives better results in cocoon weight, shell weight and shell ratio). ERR was however significantly superior in Dighloti.
· In all the seasons i.e., aherua, bhodia, kotia and chetua som were found superior result among the others.
Source of Information :Annual Report:1995-96
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Project No.:CMER
Organization : Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Studies on pests of muga silkworm.
Personnel : Chowdhury B, Sonowal L, Das PK
Funding Source : CSB, Bangalore
Project Period :1997-2002
Objectives :To evolve suitable control measures for pest of muga silkworm.
Results/Recommendations :The stock of Nesolynx thymus hyperparasitoid of uzi fly maintained upto the 52 generations by alternative use of the host pupae of flash fly, Uzi fly and housefly. The life cycle was found 14-16 days during July-August and 40-42 days during December-January and showed 3.73% infestation.
Source of Information :Annual Report: 2002-03
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Studies on vegetative propagation of muga food plants.
Personnel : Chakravarty R, Rajanna L
Project Period :1997-1998
Objectives :
· To study clonal propagation of Machilus bombycina.
· To study propagation of som by stem cuttings.
· To study vegetative propagation of soalu by air layerage technique.
Results/Recommendations :Response of clones to root growth promoting substances is very poor. High percentage of sprouting occurred in second month and in control since the time of cuttings planted. Propagation of soalu plant is easier and simpler. Ground layerage technique has been found more advantageous over air layering in two respects
· Transplantation of rooted ground layer is easy.
· Less time is needed to prepare ground layers.
Source of Information :Annual Report: 1997-98
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat Assam.
Project Title :Improvement in quality and productivity of muga host plants.
Personnel :Siddiqui AA, Choudhury R, Babu Lal
Funding Source :CSB, Bangalore
Project Period :1997-1999
Objectives :Survey, collection and screening of more nutritive varieties of som through bioassay.
Results/Recommendations :
· In this study survey and identification of various som varieties done on the basis of leaf morphology, floral biology, sex, diseases etc in the entire North-East region, Western India, Bhutan, Sikkim and Nepal.
· Raising the identified morpho-varieties through vegetative propagation for making germplasm bank.
· Many varieties of som Machilus bombycina and soalu Litsaea polyantha are existing in nature which are actually palatable to muga silkworm. Therefore the survey, identification, collection and evaluation of different varieties through bioassay are pre-requisite for selection of desirable types. So far, 14 morphotypes of som and 10 morphotypes of soalu have been identified. Bioassay on 8 morphotypes has been conducted in modest way.
Source of Information :Annual Report:
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Standardization of embryo isolation technique and identification of low temperature resistant stage in muga silkworm Antheraea assama.
Personnel :Das PK, Singhal BB, Kumar N, Sahu AK
Funding Source :CSB, Bangalore
Project Period :1997-2000
Objectives :To standardize embryo isolation technique to workout embryonic development and to identify cold resistant stage to hatching as per crop schedule.
Results/Recommendations :During 1999-2000 the hot water technique was fine, time and with this the embryo can be isolated right from early state of 5. The fixed embryo within the egg can be preserved at 5% acetic acid upto 38 days without damaging embryonic tissue and within this period the embryo can be isolated at any convenient time. The 20 different embryonic stages have been identified. The hot water technique was standardized for fixation of embryo. The egg was cut on the chorion from micropyle along the length with sharp blade and on pressing softly the embryo with yolk come out intact on repeating as many egg as necessary.
Source of Information :Annual Report: 2000-01
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Studies on the grainage behaviour and reproductive biology in muga silkworm Antheraea assama Ww.
Personnel : Das PK, Sahu AK, Kumar N, Singhal BB
Funding Source :CSB, Bangalore
Project Period :1997-2000
Objectives :To formulate a complete package of practices on grainage technology and exploration of sericulture details in muga silkworm.
Results/Recommendations :
· Different age groups of male cocoons were exposed to 32°C for different periods. Result revealed that coupling technology was reduced under 34°C, pupal period significantly prolonged when exposed to 34°C on the third day of spinning and fertility was effected on exposure at all ages to constant temperature of 32°C.
· The treatment recorded pupal mortality to the tune of 31% at 34°C, 23% under 30°C as compared to 21% in control. Similar revival of germ cell formation process was observed after the cocoon obtained from the jethua crop 1999 were restricted for preservation at 10±1°C for 25, 30 and 35 days i.e., the dfls produced out of jethua crop showed only 5% hatching as compared to 45% in the dfls prepared out of the preserved cocoons of the jethua crop.
Source of Information :Annual Report:1999-2000
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat, Assam.
Project Title :Development of package of practices for som.
Personnel :Reena Choudhury, Pamehgam M
Funding Source :CSB, Bangalore
Project Period :1997-1999
Objectives :To provide suitable package of practices for som intercropping to generate additional income.
Results/Recommendations :During the study six summer intercrops namely Corn (T1), Cucumber (T2), Amaranthus (T3), Long beans (T4), Lady’s finger (T5) and sweet potato (T6) were grown on som plantation under 2 x 2 & 3 x 3 mt. spacings. Highest return from kharif crop was obtained from long bean (T4).
Effect of summer intercrops on some growth under 2 x 2 mt spacing revealed higher gain in terms of height (10.80%) and leaf weight (63.70%) while under 3x3 mt.spacing leaf number and stem girth were 47.0 and 12.0% more as compared to the control.
Six winter intercrops namely tomato (T1), potato (T2), carrot (T3), Raddish (T4), Black gram (T5) and French Bean (T6) were grown in som plantation raised at 2 x 2 and 3 x 3 mt. spacing. Harvesting was conducted from November. Out of the above six highest return from potato. Som leaf production was highest in T1 spacing followed by T5 under 3 x 3 mt. spacing while under 2 x 2 mt. spacing, leaf production was highest in T3 followed by T4.
Source of Information :Annual Report:1998-99
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Stabilization of muga seed crops through improved rearing techniques.
Personnel :Teotia RS, Singhal BB, Das PK
Funding Source :CSB, Bangalore
Project Period :1997-2000
Objectives :
· To stabilize muga seed crops by developing following techniques.
· To develop package of practices for developing ideal chawki garden to match the nutritional requirement of muga silkworm for early instar and to minimize unaccountable losses.
· To develop season specific rearing under indoor conditions for seed crop.
Results/Recommendations :
· During the project period, chawki rearing study on the low bush of som and soalu was conducted during the seed crops chetua and bhodia. The SR% value in both the crops were found to be significant among treatment as compared to control. During Bhodia crop mortality in chawki stage ranged from 56.33% to 87.50% among treatments as compared to control. The ERR value ranged from 5.50 to 23.00% among treatments as against 23.30% in control. During Chetua crop ERR values although were comparatively low.
· During Bhodia crop ERR values were found to be significantly higher than the control. Mortality of worms during chawki stage was also found to be lower. During chetua crop ERR values among the treatments although were low, same were found to be significantly higher than the control. During the Bhodia crop average fecundity were highest. During March, April 1998 practical indoor reared worms revealed 23.40% and 6.60% ERR respectively.
· Chawki rearing in bush plantation of 6 feet height som with 90 days old foliage and higher doses of input gives better ERR for providing nutritious foliage to the chawki worms which is the most crucial stage of rearings when the worms are more susceptible to diseases and adverse climatic conditions. Use of nylon net at chawki stage reduced early stage mortality from pest/predators and rain/storm.
Source of Information :Annual Report:2000-01
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Studies on the fctores responsible for induction of pupal diapause in Muga silkworm Antheraea assama ww. through survey in the natural habitat.
Personnel : Das PK, Sahu AK, Kumar N
Funding Source :CSB, Bangalore
Project Period :1998-1999
Objectives :To determine the abiotic factors responsible for pupal diapauses in Muga.
Results/Recommendations :Rearing of the green stock in Gabhures from wild hibernating muga cocoons were procured during October-November’98 showed that the larval and pupal periods in the experimental lots prolonged by 4 and 15 days respectively. However, the same trend was not observed in the second rearings conducted in the wild state.
Source of Information :Annual Report: 1998-99
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat Assam.
Project Title :Improvement in quality and productivity of muga host plants.
Personnel :Das PK, Bhat MM, Babula
Funding Source :CSB, Bangalore
Project Period :1999-2000
Objectives :To evolve superior som morphotypes with better leaf yield and nutrition.
Results/Recommendations :
· New plantation of existing morphotypes of som has been raised and being maintained. Bioassay for jethua 99 had been conducted without any application of micronutrient formulation as a left over part of the experiment. The bioassay result revealed again the S6 morphotype to be best with 33.33% ERR and 50.95g absolutes silk yield 1300 larvae in treatment as compared to 13.33% and 19.00 g in control. Seedlings of different promising morphotypes of som have been raised in polytubes. Seedlings were sprayed with micronutrient formulation under treatment and no spray under control.
· S6 morphotypes of som plantation under the recommended package of practices is best suited for commercial exploitation among all morphotypes.
Source of Information :Annual Report:1999-2000
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Socio-economic and productivity studies in muga culture.
Personnel :Barah A, Mech D
Funding Source :CSB, Bangalore
Project Period :2000-2001
Objectives :
· To know socio-economic status of the muga farmer to quantify the measurable yield gap, if any in productivity of muga.
· To assess the various constraints confronting muga culture for bridging the gap in yield.
Results/Recommendations :
· The study was conducted in major districts of Assam covering 50 farmers in each district in two seed and two commercial crops/year. It is found that most of the muga rearers are illiterate or with maximum educational status of M.E. standard. Further, around 100% of muga rearers surveyed are from lower income group and almost all the farmers cultivates paddy as primary source of income and sericulture as secondary.
· Altogether 300 numbers of muga farmers from 6 major muga growing districts of Assam, were considered for analysis of yield gap in muga culture. From the study it has been found that no farmer utilizes his plantation to the fullest potential. The cause of under utilization of the food plants or yield gap can be attributed to the following reasons.
· Non-availability of the muga seeds in time.
· High cost of seed.
· High incidence of disease and pests in rearing and
· Marketing constraints, in particular as indicated by more than 90% among the surveyed muga farmers.
Source of Information :Annual Report:2000-01
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Collection, isolation and evaluation of different muga strains for hybridization.
Personnel :Kakati PK, Brahma KC, Senapati MD
Funding Source :CSB, Bangalore
Project Period :2000-2003
Objectives :Evaluation of high yielding varieties/hybrids of muga silkworm to boost cocoon production.
Results/Recommendations :Parental material has been collected from the wild growing areas. Hybridization experiment were initiated using the selected pure strains (blue green, yellow ad wild strain) and maintained, based on their performance viz., cocoon weight, shell weight and filament length. Hybridization F1 parents raised and data recorded and statistically analyzed (Griffing 1956). On the basis of GCA and SCA, effects of parents and hybrid combinations are blue strain, green strain, yellow strain and wild strain were selected.
Four hybrid combinations were selected and F6 to F9 generation race fixation and at F10 to F16 the trial rearing was conducted.
Source of Information :Annual Report:2000-01
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Studies on major diseases and pests of muga food plants som (Porsea bombycina).
Personnel :Ranjana, Das PK
Funding Source :CSB, Bangalore
Project Period :2000-2002
Objectives :To find out the major diseases and pests of muga food plants the extent of damage caused by them, disease resistant morpho types and also a system for management of diseases and pests of forecasting calendar of seasonal incidence.
Results/Recommendations :
· It is observed that August-September is the most favourable period with regard to the occurrence of all foliar diseases. However, maximum infection of leaf spot (11.78%), leaf rust (16.29%) and leaf blight (21.03%) were observed during February-March, June-July and December-January respectively. While in case of bacterial blight (10.50%) and leaf curl (7.60%), the peak infection was during August-September season. Seasonal infection of leaf spot and leaf rust is very significantly with change of seasons.
· It also observed that leaf minor, leaf gall, sucking pest and stem borer are the common pests of som throughout the year. However, maximum infestation of leaf minor and stem borer take place during October-November, while infestation of leaf gall and sucking pests attains peak during August-September, season. Infestations of the four common pests significantly vary with the seasons.
Project outcome: Diseases and pest forecasting calendar for muga food plant som has been developed.
Source of Information : Annual Report: 2001-02
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Studies on the major diseases and pests of muga silkworm Antheraea assama.
Personnel :Senapati MD, Mech D, Choudhury B, Brahma KC, Kakati PK, Benchamin KV
Funding Source :CSB, Bangalore
Project Period :2000-2002
Objectives :To find out the major diseases and pests of muga silkworm, their seasonal occurrence, extent of damage caused by them, forecasting of diseases and developing a system for minimizing crop losses due to them.
Results/Recommendations :It is observed in two major regions of Assam, Upper Assam and lower Assam that in five seasons jethua, aherua, bhodia, kotia and jerua virosis occurred throughout the year but it highly effected in bhodia and Jarua crops with 37.0% and 23.60% infection. Bacteriosis highly occurred in jarua 23.01%, Microsporidiosis was not observed so far except 8.14% in jethua, fungal disease was observed in jarua at 5.74% in Upper Assam. In case of lower Assam except Jarua virosis occurred in all other seasons with 22.43% and 19.49%. Bacteriosis occurred at peak level in bhodia with 18.62%. Microsporidiosis is not observed, fungal disease was observed in jarua at 47.01%. It is observed that uzi fly infestation was observed throughout the year but peak period in jarua with 17.20% in Upper Assam. Uzi fly infestation was observed throughout the year but peak period of infestation was observed in jarua and 26.00% in Lower Assam. Disease and pest occurrence is more in lower Assam than Upper Assam.
Source of Information :Annual Report:2002-03
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Standardization of technology for improvement of yield and quality of muga silkworm.
Personnel :Das K, Kakati PK, Benchamin KV
Funding Source :CSB, Bangalore
Project Period :2000-2002
Objectives :Improvement of cocoon: laying ratio and quality of muga silkworm seed.
Results/Recommendations :Results indicate that the muga cocoons can safely be preserved for 45 days for seed purposes without affecting the reproductive physiology. Further, it indicates that preservation of cocoons at 7.5°C and 10°C can reduce the grainage span to the extent of six days against the control (12-13 days). The total unutilized moth percentage has been decreased to 12-16% against 40-43% in control. This means that the preservation does not affect the vitality in moths, and in spite the cocoon laying ratio has been increased (2.4:1) when compared to (3.5:1) in control. Hence the preservation of seed cocoons at 7.5°C and 10°C gives an idea to skip off the unpredictable winter pre-seed crop. However, preponement of the spring crop has come in the way.
Project outcome :Short term low temperature cocoon refrigeration technique developed for synchronization of moth emergence.
Source of Information :Annual Report:2002-03
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Studies on the improvement of rearing technology for the production of quality cocoons of muga silkworm.
Personnel :Sarkar M, Senapati MD, Murthy BN, Kakati PK, Suryanarayana N.
Funding Source :CSB, Bangalore
Project Period :2000-2003
Objectives :Minimization of loss of silkworm through improvement of rearing technology viz., application of larval bed disinfectants and pre-brushing care of muga host plants for the production of quality cocoons of muga silkworm.
Results/Recommendations :
· Among the disinfectants tried TBL was found to be effective and easily available locally for control of bacterial diseases of muga silkworm. The same has been given brand name as “Muga Guard” and is under field trials for popularization.
· A systematic approach for pre-brushing care by using crude extracts of botanicals to prevent the early loss of muga silkworm.
Project outcome:Platform rearing technique was developed as an improved method for muga silkworm rearing.
Source of Information :Annual Report: 2003.
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Evolution of suitable package of practices for muga pre seed and seed crop rearing.
Personnel : Das PK, Singh BK, Bhattacharya A
Funding Source :CSB, Bangalore
Project Period :2001-2005
Objectives :To evolve an ideal package for muga silkworm rearing during the seed crops through chawki and partial indoor rearing method and creating ideal rearing conditions during pre seed crops Jarua and Aherua crops ensuring required quantities of availability of dfls during seed crops chotua and bhodia, thereby boosting production and productivity during commercial crops.
Results/Recommendations :
· It is observed that during Chethua crop early stage survivability is maximum in treatment S1C1 (shade + mulching) (80.73%) against 74.30% in control (plants without shade + mulching) and late stage survivability is maximum in S1C1 (27.14%) against 21.50% in control which are significant at CD 5% (3.10 and 2.64% respectively). During Aherua crop ESS is maximum in S1C1 treatment (75.60%) and S1C1 is 75.3% against 67.40% in control and LSS in maximum in S0C1 (12.80%) and S0C1 (13.00%) against 6.70% in control which are significant at CD5% (3.45 and 2.57 respectively). During Bhodia crop ESS is maximum in treatment S1C1 (74.30%) & S0C1 (74.40%) against 70.60% in control and LSS is maximum in S0C1 (8.00%) which are not significantly higher than control (7.40%).
· The findings reveal that mortality till second instar was significantly low in all the treatments and the ERR during Aherua crop shows a significantly higher in T1 (som twig in polythene bag), T2 (soalu twig in polythene bag), T6 soalu in iron tray), T7 (Juvenile potted som).
Source of Information :Annual Report: 2004-2005.
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Investigation of Pebrine disease in muga silkworm Antheraea assamensis.
Personnel : Das K, Ranjana Das, Kakati PK
Funding Source :CSB, Bangalore
Project Period :2002-2006
Objectives :
§ To find out the taxonomic position of causal organism of pebrine disease in muga silkworm.
§ To ascertain the areas of cross infectivity of pathogen of pebrine disease in muga and eri silkworm.
§ To evaluate the suitable strategies to control of pebrine disease in muga silkworm.
Results/Recommendations :
· It is observed that the spores of pebrine infected muga silkworm has been successfully isolated and confirmed through pathogenicity test by inoculating the isolated spores to healthy larvae.
· In this study, pebrine spores isolated from muga silkworm were inoculated to healthy eri silkworm After 6-8 days, eri larvae exhibited symptoms of pebrine disease and on examination, identical spores were detected in the midgut, which confirmed cross infectivity of pebrine between muga and eri silkworm.
· The result confirmed the cross infectivity of causal organism of pebrine disease from muga to eri silkworm.
Source of Information :Annual Report: 2003-04
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Study on the level of technology adoption among different groups of farmers and their impact on production of muga cocoon.
Personnel :Diganta Mech, Anukul Barah, Ranjit Kar
Funding Source :CSB, Bangalore
Project Period :2002-2003
Objectives :
· To measure the rate of technology adoption among different group of farmers.
· To identify constraints for technology adoption at farmers level.
· To assess the impact of technology at farmers level.
Results/Recommendations :
· Based on the adoption pattern, farmers can be grouped into four categories – high, medium, low and non-adoptor and percentage of which are recorded as 15.1, 6.8, 52.6 and 25.5% respectively. Impact of improved technologies on production is clearly visible at high and medium adoption level as in three different seasons Bhodia, Kotia and Aherua as 43.4, 31.2, 52.6, 43.4 36.1 and 32.2 respectively in high and medium adoption level.
· Major constraints for adoption of improved technologies are identified as marketing of cocoons, non-awareness, strong inclination towards traditional practices, high cost of technology and financial problems.
Source of Information :Annual Report:2002-03
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Survey, collection, characterization and conservation of Antheraea assamensis.
Personnel :Das PK, Sahu AK
Funding Source :CSB, Bangalore
Project Period :2002-2005
Objectives :To survey different parts of West Bengal, Sub-Himalayan belt and Orissa and collection of wild muga silkworm, their characterization and conservation under ex situ and in situ conditions.
Results/Recommendations : Population of wild muga silkworm exhibited a dwindling trend as wild muga were mostly found on dighloti plants (Litsaea salicifolia) in forest areas nearer to rivulets. Out of all the places surveyed of Northeast region. It is found that with moderate climatic condition and abundant food plants was found to be the suitable habitat of the precious wild muga silkworm. Ex situ conservation of the wild muga silkworms in places away from the natural habitat was difficult.
Source of Information :Annual Report:2004-05
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Assessment of integrated technology package for sustainable development in muga culture under farmer’s conditions.
Personnel : Mech D, Barah D, Singh KC.
Funding Source :CSB, Bangalore
Project Period :2003-2005
Objectives :
· To assess the impact of integrated technology packages of muga culture under farmer’s condition.
· To increase the productivity at farmer’s level through development of on-farm demonstration and innovations for greater economic dividends.
Results/Recommendations :The study was carried out with 8 recommended technologies in integration for improvement of cocoon productivity at farmers level these are:
· 3x3 spacing plantation.
· Application of NPK (87g U+125 g SSP+ 33g MOP/plant per Year) and 1cft FYM per plant/Year.
· Pruning at 6 ft height once in a Year and top clipping after every rearing.
· Use of microscopically examined layings (dfls).
· Chawki rearing on bush plants.
· Use of nylon nets for protecting against pests and predators.
· Prophylactic measures against diseases and pests.
· Use of improved spinning device.
· Test rearing in farmers field of chathua and bhodia. It is observed that through technology intervention, cocoon production at farmers level could be increased by 66.7 and 79.3% in chathua and bhodia seeds crop respectively. The benefit cost ratio after technology intervention has been calculated to be 2.06 against 1.37 of the traditional farmers.
Source of Information :Annual Report:2002-03
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Studies on the effect of different essential oils of Ocimum sp. for controlling grasserie and flacherie diseases in mulberry and muga silkworm.
Personnel : Borah VC, Rahman SAS, Chakravarty R
Funding Source :CSB, Bangalore
Project Period :2003-2005
Objectives :To test the antibacterial and antiviral activities of available essential oil of tulsi to control the flacherie and grasserie diseases in mulberry and muga silkworms.
Results/Recommendations :
· Three essential oils of Ocimum sp. Linalool, Limonene and Bornyl acetate at 500, 750 and 1000ppm and tulsi extract at 1%, 3% and 5% concentrations were tested for controlling grasserie and flacherie disease in mulberry silkworm and muga silkworm.
· In case of mulberry silkworm Linalool at 500 ppm gives consistently good result with a survivability percentage of 54, 53.66 and 60.33 respectively in August-September, October-November and March-April in comparison to other treatments.
· In case of muga silkworm 5% crude extract of tulsi was more effective with 43.0% and 46.67% survivability in July and September and its extract, Linalol had 42.33% survivability in the same season.
Source of Information :Annual Report: 2004-05
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Project No.:CMER
Organization : Central Muga and Eri Research & Training Institute, Jorhat
Jorhat Assam.
Project Title :Collection and evaluation of muga food plants.
Personnel :Md.Isa, Yadav GS
Funding Source :CSB, Bangalore
Project Period :-1980
Objectives :To find out nature involving maintenance of the various primary and secondary food plants of the polyphagous muga silkworm and study their comparative feed efficacy and genetic/breeding potentials.
Results/Recommendations :
· In this study primary food plants Machilus bombycina is found.
· The geographical distribution of this plant is from lower Himalayas, extending from Almora in the East to as far West as Nepal and prevalent throughout North Eastern region and Litsaea polyantha (soalu). It extending northward from Punjab up to salt range and Eastwards to North Eastern region and Burma and in Southwards to Satpura range and Coramandal.
· Another 10 plant species are found which are so called secondary food plants ie., Litsaea citrate (Mejarkari), Litsaea salicifolia (Dighloti), Litsaea nitida (Kathalun), Actinodaphne obovata (Patihonda), Actinodaphne anguistifolia (Bagnala), Xanthoxyleum ruesta (Bajramoni), Celastrus monosperma (Bhumlati), Magnolin sphenocarpa (Panchapa), Zizyphus jujuba (Bagori), Genelina arborea (Gamari).
· All the 12 plants given above the collected from different parts of Assam/N-E and are maintained in the muga food plant germplasm bank.
Source of Information :Annual Report: 1980-81
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Muga based integrated farming system.
Personnel : Chakravarty R, Bhattacharya A, Dutta SK, Mech D, Singh KC
Funding Source :CSB, Bangalore
Project Period :2003-2006
Objectives :To study the feasibility of integrated farming system comprising of agriculture crops, dairy, poultry, fishery, piggery, duckery, agroforestry etc. with muga.
Results/Recommendations :It is observed that net return/ha/annum prior to technological intervention was for muga Rs.9075.00, for field crop Rs.3110.00, Livestock Rs.1744.00, Fishery Rs.102.00 and plantation crop 314.00. The total net return/ha/annum of the individual enterprise in muga 63.14%, field crop 21.64%. Livestock 12.13%, fishery 0.70% and plantation crop 2.37%. The employment generation for muga was 137 mandays/ha/annum. The net annual return is comparatively more than other farming enterprises.
Project outcome: Integration of farming practices viz., agriculture, plantation crop, animal husbandry with muga as been developed.
Source of Information :Annual Report:2005-06
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Development of multiple sericulture farming system.
Personnel :Phukan JCD, Pamehgum H
Funding Source :CSB, Bangalore
Project Period :2000-2004
Objectives :To formulate a suitable package of integration of muga with mulberry/eri for augmenting income generation per unit area of land.
Results/Recommendations :
· Intercropping of som with mulberry has increased leaf yield of som by 10.5% and thereby cocoon production by 11.25%. By conducting both muga and mulberry culture in a unit area, net income can be enhanced by 64.67% over muga monoculture and 61.07% over mulberry monoculture.
· By intercropping castor with som it is observed that leaf yield of som was been increased by 8.40% and there by cocoon production with 8.46% when both muga and castor culture was done in an unit area, net income was increased by 52.96% as compared to muga monoculture and 59.79% over castor monoculture.
Source of Information :Annual Report: 2003-04
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Studies on propagation of different promising morphotypes of som.
Personnel : Kumar A, Kar R, Das PK
Funding Source :CSB, Bangalore
Project Period :2000-2003
Objectives :To study seasonal effect of rooting in different promising morphotypes of som with emphasis to increase rooting percentage.
Results/Recommendations :
· It is observed that four promising cultivars of som S3, S4, S5 and S6 have been identified as poor rooters (6-17%). Therefore, enhancement of rooting efficiency has been treated with different concentration of IBA @ 300ppm (T1), 500 ppm (T2) and 1000ppm (T3) during January-March, April-June, July-September and October-December.
· The analysis of the data indicated that the rooting of cuttings of all the cultivars declined beyond 300 ppm IBA, which has been considered as the optimum concentration.
Project outcome: Suitable and effective dose of IBA for higher rooting % of cuttings of som cultivars have been standardized.
Source of Information :Annual Report:2003-04
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Extension
Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Collection and evaluation of sericultural statistics.
Personnel :Duarah DN
Funding Source :CSB, Bangalore
Project Period :1978-1981
Objectives :Socioeconomic survey of muga rearers of Lakhimpur district.
Results/Recommendations :It was observed that average 13.65 day/month are utilized for muga culture activities. Mainly 11-20 and 21-30 years age group contribute maximum number of rearers. The active rearers are found in the age group between 31-70 years. It is observed that majority (37.50%) of the rearers belong to high school standard groups. The utilization of land holding is only 17.59 and 1.41% respectively for muga and ericulture. The village possesses only som and soalu plantation with the former sharing 98.69% of total available muga food plants. Maximum number of Kharika are put to rearing during Jethua crop i.e., April-May (82.89%) followed by Kotia and Bhodia (20.80) and (20.19%) respectively. The highest yield is observed during Jathua crop due to high rearing conducted during this season. The rearers families have the capacity to rear 1,407 layings/year as against actual rearing of 935 layings. The diseases account for about 40% of crop loss whereas pest and predator cause over 15% loss. In the absence of an organized marketing system, the rearers are obliged to sell out their harvest through middle men who dictate the prices. The net annual income fairely comes to Rs.2,270.25 including income through all products.
Source of Information :Annual Report:1980-81
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Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Project Title :Collection and evaluation of sericultural statistics in the Kohima and Mukokchung district of Nagaland.
Personnel : Mahanta JC, Gogoi SN, Borgohain PN, Gosh PL, Chakravarthy R
Funding Source :CSB, Bangalore
Project Period :1985-1986
Objectives :Collecting information on various problems and prospects of sericulture.
Results/Recommendations :
· In this study it was observed that, eri rearing seems to be most popular than mulberry silkworm rearing in both the district. It is observed that in both the districts the female persons were actual and full time rearers, whereas the male member works on the part time basis. In Kohima district silkworm rearers were found to be the plain tribals mainly the Dimasa Kachari 86.67% and rest 13.33% were the hill tribes. In Mukokchung district all the rearers are hill tribes. Farmers are mainly illiterate in both the districts. Main source of income of the all rearers are agriculture in both the districts. It is observed that mulberry plantation in Kohima districts is regular and planted in a systemic way, while it is not regular in other districts. All the eri rearers of both the districts use castor as primary food plant for eri silkworm; Kesseru is used as primary food plant for eri rearing when castor leaves are not available. Tapioca plant is also used but it is very limited. Average mulberry cocoon production per laying ranged from 167.90/laying in Kohima and 127.88/laying in Mukokchung district. Average eri cocoon production in both the districts was more or less similar 816.48/laying in Kohima and 216.08/laying in Mukokchung.
· From the present survey, it was observed that flacherie and grasserie are main diseases which caused 20 to 25% crop loss in mulberry in both the districts. Moreover, 10-15% crop loss in mulberry and eri were accounted due to predators and infestation of uzi fly.
· Data collected on the gross annual income from eri and mulberry rearing showed that in the case of eri culture it ranged from Rs.860.36 in Kohima and Rs.1856.71 in Mukokchung district. In case of mulberry, the income ranged from Rs.338.17 in Mukokchung and Rs.681.43 in Kohima district.
Source of Information :Annual Report: 1986-87
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Projects with incomplete/partial information
Project No.:CMER
Organization :Central Muga and Eri Research & Training Institute, Jorhat
Jorhat Assam.
Project Title :To study the effect of intercropping in the growth of newly raised som plantation.
Personnel :Das PK, Choudhury R, Pamehgam.M
Funding Source :CSB, Bangalore
Project Period :1997-1999
Objectives :To enhance the growth and development of muga food plants for utilization for early crop production.
Results/Recommendations :
Source of Information :Annual Report:
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Research Projects-Mulberry Division (1991 – 2006)
Mulberry Germplasm
Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Preliminary evaluation of mulberry resources for yield and quality parameters.
Personnel :Sau H, Sahu PK, Dayakar Yadav BR
Project Period :1991-1994
Objectives :To evaluate mulberry genetic resources for yield and quality parameters.
Results/Recommendations :The highest numbers of branches were recorded in variety-Surat, followed by Acc.121 and Kollegal. Highest moisture loss was observed in variety Surat followed by Acc.117, Kollegal, LF2 and Acc.115. The highest leaf yield was recorded in varieties MR2 and LF1 followed by Sujanpur-1 and S13. The leaf shoot ratio is high in S36.
Source of Information :Annual Report: 1991-94
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Collection and conservation of mulberry germplasm material.
Personnel :Ravindran S, Dayakar Yadav BR, Sau H, Rao AA
Project Period : 1992-93
Objectives :
· Collection and conservation of mulberry genetic resources.
· Characterization of mulberry genetic resources.
Results/Recommendations : One trip was made in North-Eastern region and identified some mulberry accessions.
Source of Information :Annual Report:1992-93
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title : Evaluation of mulberry genetic resources.
Personnel : Sau H, Sahu PK, Dayakar Yadav BR
Project Period :1992-1994
Objectives :
· Evaluation of mulberry genetic resources for sprouting, survival and rooting ability.
· Evaluation of mulberry genetic resources for yield and quality parameters.
Results/Recommendations :Cyprus, Bogura4, Lisbon, Morus albarangun, Burma-8, Thai peach, S1 and S41 showed highest sprouting % i.e., above 95%. The rooting ability among the 50 accessions studied for length of the longest root and weight of dry root did show variation among the exotic varieties, however, the same is not true with indigenous varieties.
Source of Information :Annual Report:1992-93
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Evaluation of mulberry accessions on pest population and prevalence activity.
Personnel :Dhahira Beevi N, Dayakar Yadav BR
Project Period :1992-1995
Objectives :To evaluate the mulberry accessions on pest population and prevalence activity.
Results/Recommendations :Pest population and prevalence studied over 61 (32 indigenous and 29 exotic) accession indicate that thrips prevailed all round the year, mites incidence crested during Feb-July weevils April-Sep, leaf hopper Feb-May and mealy bugs April-June.
Source of Information :Annual Report: 1992-95
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Characterization of mulberry genetic resources.
Personnel :Tikader A, Ravindran S, Rao AA, Naik VG
Project Period :1993-2006
Objectives :To characterize the mulberry genetic resources.
Results/Recommendations :Total 328 mulberry accessions were characterized during the period based on morphology, anatomy, reproduction etc., and catalogue was published which is the first of its kind in India (1993-1997).
150 mulberry accessions have been characterized based on set descriptors. The descriptors include morphological reproductive, anatomical, biochemical growth traits etc. The result of the first two-phase programme are published in the form of catalogue and distributed to the research institutes (2003-06).
Source of Information : Annual Report: 1993-2006
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Studies on Isozymes banding pattern in mulberry genetic resources.
Personnel :Naik VG, Pavan Kumar T
Project Period :1994-1996
Objectives :To study the variability among the mulberry species
Results/Recommendations :The active bands among the species varied from 2 to 5 under progress. M.sinensis and M. laevigata showed maximum and minimum number of bands. All the Morus species showed one common band. The observed Rf values were 0.29 for major band and 0.37, 0.40, 0.43, 0.60 and 0.63 for minors. Based on the Rf values the 17 mulberry species can be divided into six groups.
Source of Information : Annual Report: 1995 - 96
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Project No.:CSGH
Organization: Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Studies on the variability of reproductive characters in mulberry genetic resources.
Personnel :Rao AA, Sau H
Project Period :1994-1995
Objectives :To study the variability reproductive characters in indigenous and exotic varieties.
Results/Recommendations :312 mulberry accessions (227 indigenous and 85 exotic) studied for sex expression showed 235 (75.32%) are strictly dioecious, 77 (24.68%) are monoecious, indicating preponderance of unisexuality in mulberry. Again of the 235 dioecious PGRS, 191 (81.27%) bear pistillate (female) and 44 (18.72%) staminate (male) inflorescence recording gynoecious preponderance, irrespective of geographical and genetic origin.
Source of Information :Annual Report: 1994-1995
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Project No.:CSGH
Organization: Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Characterization of mulberry genetic resources.
Personnel :Rao AA, Sau H
Project Period :1994-95
Objectives :To analyze leaf morpho-anatomy in 46 accessions comprising 18 indigenous and 28 exotic resources.
Results/Recommendations :The anatomical study was carried out and found some of the accessions are suitable for stress condition based on their stomata size and frequency.
Source of Information : Annual Report: 1994-95
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Survey, exploration and collection of mulberry genetic resources in Western Ghat regions of South-west India.
Personnel :Dayakar Yadav BR, Naik VG
Project Period :1994-95
Results/Recommendations : A good number of mulberry accessions were collected from Kerala (25) and Tamil Nadu (25) through survey and exploration.
Source of Information :Annual Report: 1994-95
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title : Identification of gene pool reserves in South India.
Personnel :Dayakar Yadav BR
Project Period :1994-95
Objectives :To identify gene pool reserves and diversity/variability in Morus species under natural habitats in South India.
Results/Recommendations : Morus laevigata was identified in Yercaud hills in Salem district of Tamil Nadu. The material collected and established in the field gene bank.
Source of Information :Annual Report: 1994 -95
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Survey and exploration of central India (MP & AP).
Personnel :Rao AA
Project Period :1994-1996
Results/Recommendations :A good number of mulberry accessions were collected and established at field gene bank.
Source of Information :Annual Report: 1994-1996
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Survey and exploration mulberry germplasm varieties of North-West India-UP.
Personnel :Sau H
Project Period :1994-95
Objectives :To identify GPR locations in Northwest and record variability available.
Results/Recommendations :Eight collections were made from erstwhile Uttar Pradesh and established at Field gene bank of CSGRC, Hosur.
Source of Information : Annual Report: 1994 -1995
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Survey and exploration in Central, Southern (A & N Islands) North-Eastern and North-West India.
Personnel :Tikader A, Ravindran S, Rao AA, Naik VG
Project Period :1994-96
Objectives :To identify GPR locations in different parts of India.
Results/Recommendations : A good number of collections were made from different parts of the country and preserved in germplasm centre. Two wild collections from A & N Islands which are having largest leaf size (783.00 sq.cm).
Source of Information : Annual Report:1994-1995
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Survey and exploration of southern and North west India
Personnel :Tikader A, Thangavelu K, Ravindran S, Naik VG, Rao AA, Chandrasekar M, Saraswath RP
Project Period :1996 -2007
Objectives :To identify GPR locations in different parts of India.
Results/Recommendations : A total of 46 survey and exploration conducted during (1996 -2007) and collected 327 mulberry accessions.
Source of Information : Annual Report: 1996-2007
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title : Characterization of mulberry genetic resources.
Personnel :Tikader A, Ravindran S, Rao AA, Naik VG
Project Period :1997-2000
Objectives : To characterize the mulberry genetic resources
Results/Recommendations :Total 300 mulberry accessions were characterized during the period based on morphology, anatomy, reproductive etc. and catalogue vol.2 was published.
Source of Information : Annual Report: 1997-2000
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title : Molecular characterization of mulberry germplasm.
Personnel :Naik VG, Tikader A, Mukherjee P
Project Period :1997-2001
Results/Recommendations : Forty-four mulberry accessions and 27 M. laevigata collected through exploration from different locations of India were subjected for RAPD analysis. Distance matrix calculation based on RAPD data set revealed the dissimilarity among 44 varieties ranging from 0.027 to 0.586. The highest divergence was between MI-0029 and MI-0092, whereas it was least between two pairs of accessions namely, MI-0129 and MI-0180 and, MI-0037 and MI-0045. The clustering pattern of M. laevigata did not show any correlation with the regional/ geographical distribution of these accessions
Source of Information : Annual Report: 1997-2001
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Evaluation for propagation traits of mulberry genetic resources.
Personnel : Goel AK, Ramesh SR, Ravindran S, Tikader A
Project Period :1997- 2000
Objectives :
· Evaluation of mulberry germplasm to know the performance of different mulberry accessions through cuttings.
· The study provides information on rooting behaviour of mulberry germplasm.
Results/Recommendations :222 mulberry accessions were studied for different propagation traits. The mean data indicates significant variation in various rooting parameters among the accessions. Maximum variability was observed in indigenous accessions compared to exotic accession.
Source of Information : Annual Report: 1997- 2000
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Evaluation for mulberry genetic resources (ARBD)
Personnel : Goel AK, Ramesh SR, Ravindran S, Tikader A
Project Period : 1997- 2000
Objectives : Evaluation of mulberry germplasm to know the performance of different mulberry accessions in Augmented Design.
Results/Recommendations :316 mulberry accessions were studied for different growth and yield traits during 1997-2000. The mean data of leaf yield indicated that 108 and 53 accessions performed better than check-1 (Kanva-2) and check-2 (MR-2) indigenous whereas 41 and 31 accessions over check-1 (Kosen) and check-2 (Chinese white) in exotic.
Source of Information : Annual Report: 1997-2000
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Conservation and supply of mulberry genetic resources.
Personnel :Tikader A, Saraswath RP, Jayappa T
Project Period :1998-2005
Objectives :Conservation of mulberry genetic resources to promote utilization of the genetic resources properly.
Results/Recommendations :In field gene bank a total of 770-mulberry germplasm was maintained during the period. A total of 36 mulberry accessions were supplied to four Universities of Tamil Nadu and Karnataka as a part of utilization of germplasm.
In field gene bank a total of 1063 mulberry germplasm was maintained during the period. A total of 630 accessions were supplied to eleven organizations for research purposes.
Source of Information :Annual Report: 1998-2005
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Molecular characterization of mulberry germplasm.
Personnel :Naik VG, Tikader A, Mukherjee P
Project Period : 2000-2001
Results/Recommendations : M. laevigata and other accessions have been characterized using random primers. The RAPD profiles of 29 M. laevigata were utilized for exploring the possibility of establishing association between DNA markers and selected morpho-biochemical parameters of mulberry. The analysis of data indicates the possibilities of short listing DNA markers associated with morpho-biochemical parameters.
Source of Information : Annual Report: 2000-2001
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Evaluation for propagation traits of mulberry genetic resources.
Personnel : Jayappa T, Tikader A, Chandrasekar M
Project Period :2000-2005
Objectives :
· Evaluation of mulberry germplasm to know the performance of different mulberry accessions through cuttings.
· The study provides information on rooting behaviour of mulberry germplasm.
Results/Recommendations :269 and 205 mulberry accessions were studied for different propagation traits. The mean data indicates significant variation in various rooting parameters among the accessions. Maximum variability was observed in indigenous accessions compared to exotic accession.
Source of Information : Annual Report: 2000 - 2005
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Characterization of mulberry genetic resources.
Personnel :Tikader A, Ananda Rao A
Project Period :2000-2003
Objectives :More emphasis is being attempted for characterization of available resources.
Results/Recommendations :150 mulberry accessions have been characterized based on set descriptors. The descriptors include morphological reproductive, anatomical biochemical growth traits etc. The result of the first two-phase programme are published in the form of catalogue and distributed to the research institutes.
Source of Information : Annual Report: 2000- 2003
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Growth behaviour in dwarf tree mulberry germplasm.
Personnel :Tikader A, Rao AA
Project Period :2001-2003
Objectives :To know the growth performance of 150 mulberry accessions.
Results/Recommendations :Indigenous accessions exhibited higher mean values for number of branches, length of longest shoot, total shoot length, internodal distance whereas exotic accessions showed higher mean values for leaf size, hundred leaf weight, leaf yield/plant, leaf shoot ratio, total moisture content and moisture retention capacity. Higher CV% was recorded for most of the leaf characters in indigenous accessions compared to exotic accessions.
Source of Information :Annual Report: 200 - 2003
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :All India Mulberry and Silkworm Germplasm Evaluation Programme (AIMSGEP)–Mulberry (Collaborative Project with 8 network units)
Personnel :Tikader A
Project Period : 2002-2006
Objectives :To identify the mulberry accession suitable for different agro-climatic zones.
Results/Recommendations :The mulberry accessions tested in different centers were subjected to statistical analysis and finally grouped them based on leaf yield and bioassay, following accessions were found suitable for different centres. CSGRC, Hosur (Ind & Exo) MI-0437, 0376, ME-0033, 0058, 0169, CSR&TI, Mysore –MI-0310, 0326; CSR&TI, Berhampore-MI-0310, 0324, 0376;CSR&TI, Pampore- ME-0167, 0130, 0173 0168; SSBS, Coonoor- ME-0007, 0033, 0130, 0169; RSRS, Jorhat- MI-0154, 0369, 0416, 0349, 0388; RSRS, Sahaspur – MI-0349, 0416, 0431 and RSRS, Jammu – MI- 0324 0252 against local ruling variety.
Source of Information : Annual Report: 2006 - 2007
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Evaluation of mulberry genetic resources for growth and yield parameters
Personnel :Chandrasekar M, Saraswat RP
Project Period :2002-2007
Objectives :To assess the mulberry accessions better than prevailing ruling variety
Results/Recommendations :Since beginning of the project 13 crops data were recorded. The result indicated that 9 indigenous and one exotic accession showed leaf yield (1305–994 g), which is better than V1 and Kosen, the ruling variety. The project was completed during 2005- 2006.
So far, 52 (Indegenous-498, Exotic-114) accessions were evaluated for growth and yield parameters in two phases. For third phases, cutting of test accessions were plated in nursery beds and sapling are raised to set up the experiment.
Source of Information : Annual Report: 2002-2007
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Survey, exploration and collection of mulberry genetic resources in Maharashtra.
Personnel :Saraswath RP
Project Period :2003-2004
Objectives :To cover the unexplored areas Marathwada and Vidarbha regions of Maharashtra.
Results/Recommendations :
· Vidarbha: Vidharbha comprise of Amaravathi and Nagpur division is a big region of Maharashtra, where mulberry trees are grown abundantly for fruits and shade.
· Marathwada: The rainfall varies from 600 to 700 mm per year. The soil is medium black cotton soil with a pH 7.8-8.5.
Source of Information :Annual Report 2003-04
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Survey, exploration and collection of mulberry genetic
resources in Kerala.
Personnel :Thangavelu K
Project Period :2003-2004
Objectives :To conduct survey in some parts of the Western Ghats region, particularly in Malappuram, Thiruvananthapuram in Kerala to collect good number of mulberry cultivars.
Results/Recommendations :During the year under report some parts of Idukki, Kottayam and Kannur district were covered for collection of mulberry genetic resources. In the present trip 6 samples of Morus indica and 01 sample of Morus laevigata was collected.
Source of Information : Annual Report: 2003-04
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Evaluation of mulberry genetic resources for growth behaviour in field gene bank.
Personnel : Tikader A, Rao AA
Project Period :2003-2006
Objectives :To assess the growth and yield parameters for individual accessions in the field gene bank.
Results/Recommendations :150 mulberry accessions were subjected to record the data of growth behaviour after pruning. The indigenous accessions performed better than exotic in most of the characters except leaf size, single leaf weight, 100-leaf weight and leaf shoot ratio. In general, the performance of exotic accessions is good in Indian condition and can be successfully utilized their genetic potential in mulberry crop improvement.
Source of Information :Annual Report: 2003-2006
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Biochemical characterization of mulberry genetic resources.
Personnel :Rao AA, Borpuzari MM, Krubakaran M
Project Period :2003-2006
Objectives :Studies on isozyme polymorphism in different mulberry species and selected mulberry varieties.
Results/Recommendations :The enzyme activity of two mulberry varieties selected for saline stress showed that the enzyme activity is increased with the increasing salinity. The study also indicated the adaptive ability of the tolerant mulberry variety allows it to high level of salinity and alkalinity via increased PRX and SOD activity, which may be good indicator for selecting stress tolerance genotype.
Source of Information : Annual Report: 2003-2006
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Conservation of mulberry germplasm using biotechnological approaches of in vitro culture and cryopreservation for sustainable use.
Personnel :Rao AA, Narayanamurthy T, Rekha Choudhary
Project Period :2003-2006
Objectives :In vitro conservation of mulberry germplasm resources.
Results/Recommendations :Cryopreservation protocol developed. In vitro protocol showed high survival when tested through invitro regeneration. The genetic stability of cryopreserved materials were tested and found the genetic stability of cryopreserved germplasm.
Source of Information : Annual Report:2003-2006
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Survey, exploration and collection of mulberry genetic
resources from Uttar Pradesh.
Personnel :Chandrasekar M
Project Period :2004-05
Objectives :Conduction of survey and exploration tour to collect mulberry genetic resources in U.P.
Results/Recommendations :Mulberry was collected from many districts of U.P. based on variation observed on morphological characters. 26 mulberry genetic resources were collected from the exploration tour.
Source of Information :Annual Report: 2004 - 2005
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Evaluation of mulberry genetic resources for their Susceptibility against Tukra.
Personnel :Balachandran N, Thangavelu K., Saraswath RP
Project Period :2004-2005
Objectives :To evaluate mulberry germplasm against Tukra.
Results/Recommendations :Based on Tukra Resistance Index the Tukra incidence was found to be high during the month of June (0-3.08) followed by November (0-2.42) and the incidence was low in the month of Feb (0-1.7) and in August it was (0-1.75). Further out of 36 exotic accessions studied four acc. showed very low incidence, 17 low incidence, 10 moderate incidences and five high incidence categories. None of the exotic accessions is likely susceptible.
Source of Information :Annual Report:2004-05
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Pre-breeding efforts to utilize wild mulberry germplasm resources
Personnel :Tikader A
Project Period : 2004-2007
Objectives :To utilize the wild mulberry germplasm through conventional breeding
Results/Recommendations :The result of hybridization between M. serrata, M. laevigata, Kanva-2 and Kajli were successfully established. The preliminary attempts showed encouraging results and possible to combine the wild genes in cultivated variety to tap the secondary and tertiary gene pools.
Source of Information : Annual Report: 2004 - 2007
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Identification of DNA markers associated with disease and pest resistance in mulberry (Morus spp.)
Personnel : Tikader A
Funding Source :Department of Biotechnology
Project Period : 2004-2007
Objectives :To identify the mulberry accessions for diseases resistance and develop DNA marker for different diseases (Powdery mildew, Tukra and root diseases)
Results/Recommendations : The plantation established and project is running its final year. The results will be highlighted after completion of the project.
Source of Information : Annual Report: 2004-2007
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Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Evaluation of mulberry genetic resources for abiotic and biotic stress- hot spot locations (Net working Project)
Personnel :Tikader A
Project Period :2004-2007
Objectives :To identify the mulberry accessions suitable for different hot spot locations.
Results/Recommendations :
Evaluation in semi-arid condition at RSRS, Anantapur: The ranking of mulberry accessions revealed that MI-0463, 0161, 0456 and 0573 performed better than check (MI-0012) and qualified for 6 agronomic parameters.
Evaluation under tropical humid agro-climatic condition at RSRS, Jorhat : The leaf yield was observed higher in MI-0549 and 0024, whereas leaf moisture content was higher in MI-0587, 0576 and 0310 when compare with check accession (MI-0038). Moisture retention capacity was observed to be higher in MI-0244 (70.s50%) and 0530 (74.00%) against 61.42% of check accession.
Evaluation in temperature climate at CSR&TI, Pampore: Among the 14 accessions, ME-0006, 0191, 0201, 0210 showed a consistent performance through different days.
Evaluation in temperature climate at RSRS, Salem: Twenty-four mulberry accessions were selected to screen against alkaline soil at RSRS, Salem. The leaf yield was observed to be better in exotic (426.67-285.00g) and indigenous accessions (393.33-296.87g) against two control viz., MI-0308 (240.00g) and MI-0713 (16.67g).
Evaluation in temperature climate at RSRS, Chamarajanagar: The exotic accession ME-0006 performed better and qualified for 6 agronomic traits while other eight accessions qualified for 5 agronomc traits. Two exotic and oe indigenous accession qualified for four traits while all the test accessions performed better than control (AR-12)
Source of Information : Annual Report: 2004-2007
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Silkworm Division (1991 – 2006)
Silkworm Germplasm
Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Collection, characterisation and conservation of Silkworm genetic Resources.
Personnel :Ravindra Singh K, Punithavathi G, Shanthi AN, Dahira Beevi N
Project Period :1993-1994
Objectives :To enrich germplasm bank with silkworm germplasm, characterize, evaluate and conserve true-to-type.
Results/Recommendations :A total of 59 germplasm (13 multivoltine, 56 bivoltine) representing India, Japan, China, Europe and Russia were collected, Morphologically characterisation and evaluation for growth parameters was carried out for 13 multivoltine accessions.
Publications: Proposed descriptor for silkworm genetic material. Saratchandra, B., Ravindra Singh and B.R.D. Yadav. 1993.
Source of Information : Annual Report: 1993-94
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Collection, characterization and conservation of silkworm genetic resources.
Personnel :Mukherjee P, Sunita Mukherjee S, Ravindra Singh K, Sahni NK, Punithavathi G, Dahira Beevi N
Project Period :1994-1995
Objectives :Collection, characterization, evaluation and conservation of silkworm genetic resources.
Results/Recommendations :A total of 213 germplasm (44 multivoltine, 169 bivoltine) representing India, Japan, China, France, Europe, Bangladesh and Russia were collected, Morphologically characterisation and evaluation for growth parameters was carried out for 56 multivoltine accessions. Preliminary evaluation of multivoltine accessions showed wide variability for fecundity, survivability, single cocoon weight and shell ratio. Sericin content and spatial volume of silk gland against larval weight showed maximum sericin content and silk gland volume in MY-1. Moth emergence pattern in 13 multivoltine accessions studied.
Source of Information : Annual Report: 1994-95
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Collection, characterization and conservation of silkworm genetic resources.
Personnel :Sinha RK, Mahadevamurthy TS, Sunita Mukherjee S, Sahni NK, Kumaresan P, Dahira Beevi N, Mohan B
Project Period :1995-1996
Objectives :Collection, characterization, evaluation and conservation of silkworm genetic resources.
Results/Recommendations :A total of 10 bivoltine germplasm representing India, China and turkey were collected. Wild bombycids viz., Theophila sp. and Ocinara sp. from Kalimpong and South Andamans respectively were reported. Morphologically characterisation of larval markings, cocoon colour, cocoon shape and wing fasciation were studied and dark fasciation was found to have higher survivability. Under evaluation studies multivoltine germplasm viz., MHMP(Y), AP-12 and A-13 and bivoltine germplasm viz., were found superior. The number of crop cycle for multivoltine was reduced from 6 to 5 per year by following cold preservation of eggs for 30 to 35 days.
Publications:Ravindra Singh and T.Pavan Kumar.1995. Collection through exploration of mulberry silkworm resource, Theophila sp. In. Current technology seminar. 20-22 Sept.1995 held at CSR&TI, Mysore.
Source of Information : Annual Report: 1995-96
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Collection, characterization and conservation of silkworm genetic resources.
Personnel :Sinha RK, Mahadevamurthy TS, Sunita Mukherjee S, Sahni NK, Kumaresan P, Rajarajan PA, Mohan B
Project Period :1996-1997
Objectives :Collection, Characterization, Evaluation and Conservation of Silkworm Genetic Resources.
Results/Recommendations : Morphologically characterisation of 169 bivoltine accessions was studied. Molecular characterisation through RAPD analysis was standardized for multivoltine and bivoltine germplasm. Among bivoltine germplasm, PAM-112, P-36, Sanish-E2(M), CC-1 and PAM-106 were found superior for rearing traits and BBI-0126 & BBI-0147 for reeling traits. Among multivoltine germplasm, MHMP-Y, AP-12, A4-E and RD-1 were found superior for rearing traits.
Source of Information : Annual Report: 1996-97
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Collection, characterization and conservation of silkworm genetic resources.
Personnel :Sinha RK, Mahadevamurthy TS, Sunita Mukherjee S, Sahni NK, Kumaresan P, Rajarajan PA, Mohan B
Project Period :1997-1998
Objectives :Collection, Characterization, Evaluation, Conservation and Utilisation of Silkworm Genetic Resources.
Results/Recommendations : A total of 70 bivoltine germplasm representing India, Japan, China, France, Poland, Brazil, Vietnam and South Korea was collected. Characterisation of new bivoltine collections was studied. Molecular characterisation through RAPD analysis was carried out for 51 multivoltine germplasm. Relative disease susceptibility was studied for multivoltine germplasm and the incidence ranged from 0.22 % to 10% for various diseases in different seasons. Feeding efficiency studies in multivoltine showed the range between 5.466g to 10.492 g for leaf consumption, 1:4.5 to 1:10.19 for cocoon:leaf ratio and 1:26.5 to 1:57.8 for cocoon shell:leaf ratio. Grainage studies on egg traits viz., egg weight; non-hibernating eggs were studied for multivoltine and bivoltine germplasm. Reeling studies were carried out for 70 bivoltine and superior germplasm for total filament length, non-broken filament length and denier were identified.
Source of Information : Annual Report: 1997-98
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Collection, characterization, evaluation, conservation and utilisation of silkworm genetic resources.
Personnel :Sinha RK, Mahadevamurthy TS, Sunita Mukherjee S, Sahni NK, Kumaresan P, Rajarajan PA and Mohan B
Project Period :1998-1999
Objectives :Collection, characterization, evaluation and conservation of silkworm genetic resources.
Results/Recommendations :A total of 13 bivoltine germplasm was collected. Correlation studies with qualitative and quantitative traits were carried out. Cocoon size analysis for 56 multivoltine germplasm, rearing performance analysis for 90 bivoltine and post-cocoon analysis for 13 bivoltine germplasm were carried out.
Source of Information : Annual Report: 1998-99
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Collection, Characterisation, Evaluation, Conservation and Utilisation of Silkworm Genetic Resources.
Personnel :Sinha RK, Mahadevamurthy TS, Sunita Mukherjee S, Sahni NK, Radhakrishnan S, Kumaresan P, Rajarajan PA, Mohan B
Project Period :1999-2000
Objectives :Collection, characterization, evaluation and conservation of silkworm genetic resources.
Results/Recommendations : A total of 17 silkworm germplasm was supplied to 6 institutes. Catalogue on 225 silkworm germplasm accessions was published. Morphological characterization and evaluation for growth, reproductive and post-cocoon traits were carried out for 103 silkworm germplasm accessions. Superior germplasm for ERR, cocoon weight, shell weight, SR%, low boil-off loss were identified.
Source of Information : Annual Report: 1999-2000
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Collection, characterization, evaluation, conservation and utilization of silkworm genetic resources.
Personnel :Sinha RK, Raghavendra M, Mahadevamurthy TS, Sunita Mukherjee S, Sahni NK, Radhakrishnan S, Kumaresan P, Bhagya R, Rajarajan PA, Mohan B, Ashok Kumar K
Project Period :2000-2001
Objectives :Collection, characterization, evaluation and conservation of silkworm genetic resources.
Results/Recommendations :A total of 27 silkworm germplasm was collected. Based on morphological characters and important economic traits, 225 silkworm germplasm accessions were grouped in to 33 distinct morpho-groups for core set formation. Molecular characterization for 84 bivoltine germplasm showed high genetic variability. Correlation between cocoon shape and reelability was studied which showed that elongated with faint constriction cocoon showed long filament length with less breakage. Based on rearing and reeling evaluation data 10 best accessions were identified. A total of 141 accessions were supplied to 13 research institutes.
Source of Information : Annual Report: 2000-2001
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Collection, characterisation, evaluation, conservation and utilisation of silkworm genetic resources.
Personnel :Sinha RK, Raghavendra M, Mahadevamurthy TS, Sunita Mukherjee S, Sahni NK, Radhakrishnan S, Kumaresan P, Bhagya R, Rajarajan PA, Mohan B, Ashok Kumar K
Project Period : 2001-2002
Objectives :Collection, characterization, evaluation and conservation of silkworm genetic resources.
Results/Recommendations :Two bivoltine silkworm germplasm was collected. Descriptors and descriptor-states were standardised for morphological characterisation. Confirmatory morphological characterisation was carried out for 355 silkworm accessions. A total of 91 distinct core set was developed using 225 silkworm germplasm accessions. Biochemical characterization using 4 isozymes and protein profiling was done for 11 multivoltine germplasm and the phylogeny and pupation rate association was established. Genetic divergence studies were carried out with 63 multivoltine germplasm, based on which 6 distinct clusters was obtained indicating genetic variability for economic parameters and geographical distribution. Post cocoon analysis was studied for 42 silkworm germplasm. A total of 82 accessions were supplied to 8 research institutes.
Source of Information : Annual Report: 2001-2002
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Collection, characterisation, evaluation, conservation and utilisation of Silkworm Genetic Resources.
Personnel :Sinha RK, Raghavendra M, Mahadevamurthy TS, Koundinya PR, Radhakrishnan S, Somasundaram P, Kumaresan P, Bhagya R, Kar PK, Mohan B, Ashok Kumar K
Project Period : 2002-2003
Objectives : Collection, Characterization, Evaluation and Conservation of Silkworm Genetic Resources.
Results/Recommendations :Twenty five silkworm germplasm was collected. Biochemical characterization using 4 isozymes and protein profiling was done for 83 silkworm germplasm (52 multivoltine and 31 bivoltine) and the phylogeny and pupation rate association was established. Based on rearing and reeling evaluation data 10 best accessions were identified out of 63 multivoltine and 272 bivoltine accessions. Post cocoon analysis was studied for 67 bivoltine silkworm germplasm for 16 traits. Studies done on long term preservation of multivoltine eggs for 45 days in 5˚C showed no adverse effect on rearing parameters. Long-term egg preservation of bivoltine germplasm for 360 and 440 days was studied which showed variability in hatching from 10% to 92%. Thermo-tolerance studies were carried out with 11 multivoltine accessions and 5 thermo-tolerant accessions were identified. Pilot study on induction of diapause in 20 multivoltine germplasm was initiated. A total of 82 accessions were supplied to 8 research institutes.
Source of Information : Annual Report: 2002-2003
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :All India mulberry and silkworm germplasm evaluation programme (AIMSGEP).
Personnel :Sinha RK, Raghavendra M, Radhakrishnan S and Mohan B
Results/Recommendations :Ten elite bivoltine germplasm were evaluated in 8 network centres of CSB and one trial was completed.
Source of Information : Annual Report: 2002-2003
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Collection, characterisation, evaluation, conservation and utilisation of silkworm genetic resources.
Personnel :Sinha RK, Mahadevamurthy TS, Radhakrishnan S, Kumaresan P, Bhagya R, Balachandran N, Muthulakshmi M, Mohan B
Project Period :2003-2004
Objectives :Collection, Characterization, Evaluation and Conservation of Silkworm Genetic Resources.
Results/Recommendations :Two silkworm germplasm were collected. Phenotypic and genotypic variation coefficients and stability analysis were computed which showed significant PCV% and GCV% ranging from 4.55% for pupation rate to 95.99% for boil-ff loss. Elite multivoltine germplasm were identified for 7 specialised traits. Two thermo-tolerant multivoltine accessions were identified for high temperature –high humidity stress. Based on rearing evaluation data 10 best accessions were identified out of 64 multivoltine and 331 bivoltine accessions. The crop cycle for rearing mutants was reduced from 3 to 2 per year by standardizing the 6 months egg preservation schedule. Under long-term egg preservation for bivoltine, 293 accessions showed more than 70% hatching for 360 days preservation and 12 accessions showed more than 50% hatching for 450 days preservation. A total of 82 accessions were supplied to 8 research institutes. Windows-based software on silkworm germplasm supply database management was developed.
Source of Information : Annual Report: 2003-2004
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Biochemical characterization and evaluation of silkworm genetic resources.
Project Period :2003-2004
Personnel :Ashok Kumar K, Somasundaram P
Results/Recommendations : Isozyme polymorphism based on 8 isozymes was studied in 12 silkworm germplasm. Heat-shock protein profiling in 8 multivoltine accessions in comparison with CSR-18 revealed that PMX and MU-1 germplasm showed low thermo-tolerance. Esterase activity was found minimum in Pure Mysore.
Source of Information : Annual Report: 2003-2004
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Molecular characterization of silkworm (Bombyx mori L.) genetic resources-Phase-II. (Collaborative project with SBRL-Bangalore)
Project Period :2003-2004
Personnel :Kar PK, Ashok Kumar K, Sinha RK, Thangavelu K
Results/Recommendations :DNA finger printing through RAPD, ISSR and SSR technique was carried out with 12, 21 and 10 primer sets respectively association with economic traits. Multivoltine-specific RAPD marker was identified.
Source of Information : Annual Report: 2003 - 2004.
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Evaluation of silkworm genetic resources for post-cocoon traits (Collaborative project with CSTRI-Bangalore)
Project Period : 2003-2004
Personnel : Koundinya PR, Hiremath SA, Balachandran N
Results/Recommendations :Post cocoon analysis was studied for 29 silkworm germplasm for 16 traits. High variability for quantitative and qualitative traits was observed and correlation between different reeling traits were established.
Source of Information : Annual Report: 2003 - 2004.
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Induction of diapause in multivoltine silkworm (Bombyx mori L.) germplasm and genetic stability studies through molecular tools for sustainable use and conservation.
Project Period :2003-2007
Personnel :Radhakrishnan S, Kar PK, Sinha RK, Thangavelu K, Saravanakumar
Funding Source :Department of Biotechnology
Objectives :To understand the differential expression of the diapause gene.
Results/Recommendations :Using the software programme five introns and six exons were identified, the first two exons were coding for diapause hormone and last four exons coding for PBAN peptide. Two sets of primers were designed to amplify the exon as well as intron region of diapause gee. The PCR amplification was performed using standard procedure. It was observed the size of the PCR products were same in diapause as well as in the non-diapause races. Hence the PCR amplified products were further analyzed through the DNA sequencing. The ISSR profiles showing genetic stability in diapause induced batch on comparison with control batch.
Source of Information : Annual Report: 2003-2004
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Project No.:CSGH
Organisation : Central Sericultural Germplasm Resource Centre, Hosur.
Project Title :Evaluation of silkworm genetic resources for tolerance to abiotic and biotic stresses in the selected hotspots.
Project Period :2003-2007
Objective :To evaluate some elite multivoltine silkworm accessions against abiotic stresses particularly in the adverse climatic conditions (high temperature and high humidity/high temperature and low humidity) to identify tolerant/resistant breeds.
Personnel :Kumaresan P, Balachandran N, Muthulakshmi M, Mohan B, Koundinya PR, Muthulakshmi M, Hiremath SA, Sinha RK, Vidyunmala S, Kasi Reddy, Gururaj R, Dahira Beevi N, Senapati MD, Das R, Raina RK, Rankaj Tewary, Siddique
Results/Recommendations :The results clearly indicated that four accessions viz., BMI-004, BMI-0025, BMI-0027 and BMI-0060 have performed better against both control (BMI-0001 and BMI-0017) for high temperature and low humidity in all the three centres viz., RSRS-Anantapur, Chamarajanagar and Salem.
Similarly, 4 accessions viz., BMI-0027, BMI-0025, BMI-0040 and BMI-0016 have showed better performance against both the control (BMI-0001 and BMI-0017) in CISR-Jorhat for high temperature and high humidity.
The accessions BMI-0040 and BMI-0016 have showed region specific performance especially for high temperature and high humidity condition and BMI-0060 has performed better against high temperature and low humidity conditions.
The above potential multivoltine silkworm accessions are recommended for further multiplication trails as suitable F1 hybrids under AICE for wider acceptability.
Source of Information : Annual Report: 2003-2007
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title : All India Mulberry and Silkworm Germplasm Evaluation Programme (AIMSGEP).
Project Period :2003-2007
Personnel : Radhakrishnan S, Mohan B, Sinha RK, Hiremath SA
Objectives :To find out the true genetic potential and adaptability of silkworm germplasm in different agroclimatic regions in the specific locations.
Results/Recommendations :12 promising bivoltine silkworm germplasm of CSGRC were evaluated. Based on the data on important rearing parameters viz., larval duration, larval weight, cocoon weight, shell weight, shell ratio, ERR (No), ERR (kg), pupation rate, three best performing germplasm were identified from each network centre based on Mano’s cumulative evaluation index value.
Source of Information : Annual Report: 2003-2007
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Collection, characterization, evaluation, conservation and utilization of silkworm genetic resources.
Personnel :Sinha RK, Velayudhan K, Kumaresan P, Balachandran N, Muthulakshmi M, Mohan B
Project Period :2004-2005
Objectives : Collection, Characterization, Evaluation and Conservation of Silkworm Genetic Resources.
Results/Recommendations :Twenty four silkworm germplasm were collected. Morphological characterization of 24 new accessions and preliminary evaluation for 421 accessions were carried out. Based on phenotypic stability, 56 multivoltine accessions were categorized into 4 groups. Under long-term egg preservation for bivoltine germplasm, the hatching performance was affected by 15 months preservation. A new method of mother moth examination for pebrine detection was developed for germplasm stocks and the techniques were standardised. A total of 82 accessions were supplied to 8 research institutes.
Source of Information : Annual Report: 2004-2005
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :All India Mulberry and Silkworm Germplasm Evaluation Programme (AIMSGEP).
Project Period :2004-2005
Personnel : Mohan B, Hiremath SA, Sinha RK
Objectives : Results/Recommendations :Out of the test bivoltines germplasm, Acc.No. BBE-0197, BBE-0222, BBE-0187, BBE-0050 and BBE-0183 performed better in all the 8 network centers.
Source of Information : Annual Report: 2004-2005
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Biochemical characterization and evaluation of silkworm genetic resources.
Project Period :2004-2005
Personnel :Ashok Kumar K, Somasundaram P
Results/Recommendations :Isozyme polymorphism based on 8 isozymes was studied in 28 silkworm germplasm. High molecular weight heat shock proteins (HSP) was observed in Pure Mysore, Nistari, A-25, A4e, MU-11 and LMP and these germplasm can be used as index for thermo-tolerance.
Source of Information : Annual Report: 2004-2005
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Molecular characterization of silkworm (Bombyx mori L.) genetic resources-Phase-II. (Collaborative project with SBRL-Bangalore)
Project Period :2004-2005
Personnel :Kar PK, Ashok Kumar K, Sinha RK
Results/Recommendations :DNA finger printing through ISSR technique was carried out with 25 primers for 60 multivoltine silkworm germplasm and phylogenic tree was constructed. Based on the dendrogram 5 major groups were identified.
Source of Information : Annual Report: 2004-2005
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Evaluation of silkworm genetic resources for post-cocoon traits (Collaborative project with CSTRI-Bangalore)
Project Period :2004-2005
Personnel :Koundinya PR, Hiremath SA, Choudhary CC
Results/Recommendations :Post cocoon analysis was studied for 63 silkworm germplasm for 16 traits. High variability for quantitative and qualitative traits was observed and correlation between different reeling traits was established. Top 10 germplasm for reeling traits were identified.
Source of Information :Annual Report: 2004-2005
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Induction of diapause in multivoltine silkworm (Bombyx mori L.) germplasm and genetic stability studies through molecular tools for sustainable use and conservation.
Project Period :2004-2005
Personnel :Ponnuvel KM, Kar PK, Sinha RK, Thangavelu K
Results/Recommendations :Three rearings under low temperature (18°C to 20° C) were completed under 18 hrs. light and 8 hrs. dark regulated photo period. Among the germplasm, Pure Mysore, Rong Daizo and Daizo showed higher degree (more than 95%) of egg diapause and A14DY, Race-B and C.nichi showed less (4% to 8 %) degree. Hatching % of the diapause-induced germplasm was above 85% after 6 months of egg preservation. Genomic DNA was isolated from the test multivoltine germplasm to study the genetic stability.
Source of Information :Annual Report: 2004-2005
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title : Evaluation of silkworm genetic resources for tolerance to abiotic and biotic stresses in the selected hotspots.
Project Period :2004-2005
Personnel :Kumaresan P, Balachandran N, Muthulakshmi M, Mohan B
Results/Recommendations :Evaluation of multivoltine germplasm for high temperature & high humidity indicated that 4 accessions viz., BMI-0014, BMI-0027, BMI-0025 and BMI-0017 showed better performance for maximum number of characters than the control BMI-0001. The accession BMI-0014 recorded higher pupation rate than the control. Evaluation of bivoltine showed that accession BBE-0186, BBE-0226, BBE-0189 and BBE-0239 showed better pupation at RSRS-Jammu. BBE-0226, BBE-0198 and BBE-0189 at RSRS-Sahaspur.
Source of Information : Annual Report: 2004-2005
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Collection, Characterisation, Evaluation, Conservation and Utilisation of Silkworm Genetic Resources.
Personnel :Sinha RK, Velayudhan K, Kumaresan P, Balachandran N, Muthulakshmi M, Mohan B
Project Period :2005-2006
Objectives :Collection, Characterization, Evaluation and Conservation of Silkworm Genetic Resources.
Results/Recommendations :Six silkworm germplasm were collected. Morphological characterization of 7new accessions and preliminary evaluation for 421 accessions were carried out. Evaluation indices were computed for 71 multivoltine accessions10 important economic traits. 10 bivoltine accessions were identified out of 327 bivoltine accessions. A total of 158 accessions were supplied to 14 research institutes. Software program on bivoltine egg preservation schedule and inventory was developed to compute different preservation schedules and to have inventory of DFLs receipt and delivery.
Source of Information : Annual Report: 2005-2006
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :All India Mulberry and Silkworm Germplasm Evaluation Programme (AIMSGEP).
Project Period :2005-2006
Personnel :Mohan B, Hiremath SA, Sinha RK
Results/Recommendations :Based on the Mano evaluation indices for cumulative rearing and reeling traits, best performing germplasm with E.I. value more than 55% were identified for each network centres. Among the test accessions, BBE-0183, BBE-0187 and BBE-0197 performed consistently better in most of the network centres.
Source of Information : Annual Report: 2005-2006
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Biochemical characterization and evaluation of silkworm genetic resources.
Project Period :2005-2006
Personnel :Ashok Kumar K, Somasundaram P
Results/Recommendations :Isozyme polymorphism based on 4 isozymes was studied in 27 silkworm germplasm. Unique alleles were identified among multivoltines and bivoltines, which helped to find the parentage and origin. The type of heat-shock proteins (HSP) induced under thermal stress was found out with 10 bivoltine accessions. Under thermal stress heat-shock protein in the range of 24 to 148 kDa were expressed. Activity of β-esterase in the haemolymph of 10 bivoltine germplasm was studied and correlated with stress tolerance.
Source of Information : Annual Report: 2005-2006
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Molecular characterization of silkworm (Bombyx mori L.) genetic resources- Phase-II. (Collaborative project with SBRL-Bangalore)
Project Period :2005-2006
Personnel :Kar PK, Ashok Kumar K, Sinha RK
Results/Recommendations :DNA finger printing through ISSR technique was carried out with 25 primers for 96 bivoltine silkworm germplasm and phylogenic analysis was made. The association of ISSR markers with quantitative traits viz., fecundity, cocoon weight, shell weight, SR%, ERR and pupation rate were worked out using stepwise multiple regression analysis. The level of heterozygosity, genetic diversity and allelic status were studied among 96 bivoltine accessions found optimal for maintenance from conservation point of view.
Source of Information : Annual Report: 2005-2006
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title : Evaluation of silkworm genetic resources for post-cocoon traits (Collaborative project with CSTRI-Bangalore)
Project Period :2005-2006
Personnel :Koundinya PR, Hiremath SA, Choudhary CC
Results/Recommendations : Post cocoon analysis was studied for 55 silkworm germplasm for 16 traits. High variability for quantitative and qualitative traits was observed and correlation between different reeling traits was established. Top 10 germplasm for 9 reeling traits were identified based on Mano’s evaluation index.
Source of Information : Annual Report: 2005-2006
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Induction of diapause in multivoltine silkworm (Bombyx mori L.) germplasm and genetic stability studies through molecular tools for sustainable use and conservation.
Project Period :2005-2006
Personnel :Ponnuvel KM, Kar PK, Sinha RK, Thangavelu K
Results/Recommendations :Genomic DNA was isolated from the test multivoltine germplasm and characterized with 15 ISSR primers. The ISSR profiles of control and 6th generation diapause induce batch were compared and no significant change in the profiles of control and treated batches, indicating diapause induction is only transient expression and no genetic drift due to external abiotic factors.
Source of Information : Annual Report: 2005-2006
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :Evaluation of silkworm genetic resources for tolerance to abiotic and biotic stresses in the selected hotspots.
Project Period :2005-2006.
Personnel :Kumaresan P, Balachandran N, Muthulakshmi M, Mohan B
Results/Recommendations :Evaluation of multivoltine germplasm for high temperature & high humidity tolerance indicated that BMI-0062 exhibited less bacterial flacherie (0.33%) and BMI-0060 with high incidence (12.3%) and BMI-0045, BMI-0025, BMI-0040, BMI-0027, BMI-0062, BMI-0060, BMI-0001,BMI-0049 showed better performance in unfavourable season. Evaluation bivoltine revealed that accessions viz., BBE-0226, BBE-0258, BBE-0239, BBE-0020 had shown better tolerance to biotic and abiotic stress.
Source of Information : Annual Report: 2005-2006
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Bioinformatics Projects
Project No.:CSGH
Organization :Central Sericulture Germplasm Resource Centre, Hosur
Project Title :National database on mulberry and silkworm genetic resources.
Personnel :Sekar S, Mukherjee P, Pavan Kumar T, Goel AK, Thangavelu K
Project Period :1994-1999
Objectives :
· To develop software for integrated database and descriptor preparation for mulberry and silkworm genetic resources.
· Software for statistical analysis of mulberry and silkworm genetic resources.
· Query base programme on mulberry and silkworm genetic resources.
Results/Recommendations :The source code of data storage and data retrieval facility was modified as per the requirement suggested by the scientists of SMGS to make easy report generation. New programmes were developed for augmented RBD experiment and mulberry disease experiment season-wise data storage, computation and retrieval facility.
Both Mulberry Germplasm Information System (MGIS) and Silkworm Germplasm information System (SGIS) were converted to FOXPRO for speedier data processing & retrieval, efficient file handling and statistical analysis. The database import facility for commercial statistical packages for ANOVA, t-test, correlation & regression analysis, stability and principal component analysis was developed. Augmented RBD database program was developed for mulberry germplasm evaluation.
Source of Information : Annual Report: 1995 –1999
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Project No.:CSGH
Organisation : Central Sericulture Germplasm Resource Centre, Hosur
Project Title :National database on mulberry and silkworm genetic resources.
Personnel :Sekar S, Mukherjee P, Thangavelu K, Goel AK
Project Period :1999-2000
Objectives :To develop software programs on database management for mulberry and silkworm genetic resources.
Results/Recommendations :Software for integrated database and descriptor preparation for mulberry and silkworm genetic resources, software for statistical analysis for mulberry and silkworm genetic resources and query base program on mulberry and silkworm genetic resources were fine tuned with more modules. Catalogues (Volume-2) on Mulberry and Silkworm germplasm was published.
Source of Information : Annual Report: 1999-2000
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Mulberry Breeding and Genetics
Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Evolution of superior varieties-Collection, maintenance and characterization of gene pool.
Personnel :Mukherjee S, Das BC, Gupta BK, Sarkar A, Roy BN, Sau H, Chatterjee KK, Chauhan SS, Raghunath MK, Vijayan K, Tikader A, Chakraborti SP
Project Period :1943-1995
Objectives :To collect, conserve and characterization of mulberry varieties.
Results/Recommendations :Out of 474 accessions conserved, 90 exotic, 72 indigenous and 312 evolved. Out of which 143 have been characterized on 11 economically important characters and grouped into 11 different clusters.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on hybridization and selection of progenies.
Personnel :Mukherjee S, Das BC, Prasad DN, Choudhuri PC, Raju R, Sikdar AK, Sarkar A, Ghosh PL, Roy BN, Chakroborti SP, Tikader A, Chatterjee KK, Sarkar S, Chauhan SS, Raghunath MK, Vijayan K, Gandhi Doss S
Project Period :1961-1995
Objectives :To conduct hybridization experiments using germplasm varieties.
Results/Recommendations :Out of 875 selections from controlled and open pollinated hybrids, 54 females and 34 male parents were subjected to 6 different primary yield trials. 38 superior strains were identified and assessed for leaf production, nutrient contents and suitability to silkworm rearing during the period 5 different final yield trials were also conducted. Superior genotypes were being screened for their stability and adaptability under different inputs and stress conditions. Another batch of 3107 hybrids were being screened for selection. Varieties S1, S146, S799, C763 have gone to the field and 21 more are under test in the Institute.
Source of Information : Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Cytological studies in mulberry – To work out the chromosomal number, karyotype, idiogram, ploidal status of any genetic resources of mulberry for breeding.
Personnel :Das BC, Prasad DN, Ghosh PL, Chakroborti SP
Funding Source :Central Silk Board
Project Period :1962-1995
Objective: To select the ploidal level of individual genotype.
Results/Recommendations :Out of total 474 accessions 30 GPVs and 38 evolved strains have been studied and their chromosomal status have been identified.
Source of Information : Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies related to creation of homozygous genotypes.
Personnel :Das BC, Prasad DN, Ghosh PL, Roy BN, Vijayan K, Chaudhuri M
Project Period :1965-1995
Objective :To evolve homozygous genotypes as well as separation of segregants to use as marker and to organise directional breeding.
Results/Recommendations :S3 generations of 3 monoecious HYVs as well as S1 generation of 9 GPVs have been evolved.
Source of Information : Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on improvement of quality through back cross breeding.
Personnel :Das BC, Prasad DN, Choudhuri PC, Roy I
Project Period :1965-1995
Objective :To introduce the desirable character and to eliminate the undesirable tracts through dose compensation.
Results/Recommendations :A variety BC259 is evolved through back crossing of C74 (F1 of Matigara x Kosen) with Kosen, having good rooting ability of Matigara and leaf quality like Kosen. The variety is popular at temperate hills.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Evolution of superior varieties through hybridization and selection-Studies on sex expression in mulberry.
Personnel :Mukherjee S, Das BC, Prasad DN, Roy BN, Roy I, Chakroborti SP, Tikader A, Raghunath MK, Narayan P, Tiwary PK, Vijayan K
Project Period :1965-1995
Objective :Recording of basic information on sex expression and flowering behaviour of genetic resources for effective breeding programme.
Results/Recommendations :Flowering time and sex expression of 162 varieties were recorded. Indigenous tropical varieties bloomed during January-February, while exotic and indigenous temperate varieties bloomed during March-April. Out of 162 GPB varieties 19 were males, 101 females, 30 monoecious and 12 bisexuals.
Source of Information : Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on anthesis, stigma receptivity preservation of pollen and effect of colour light on reproductive biology in mulberry.
Personnel : Das BC, Prasad DN, Sarkar A
Project Period :1965-1995
Objective :To organise hybridization programme of non-synchronizing genotypes of desirable recombinants and directional selection.
Results/Recommendations :Anthesis mature within 2-3 days after opening of flower. The maximum dehiscence of anthers occurs in between 11 am to 1 pm. Pollen can be stored at 4-5°C for one month without loosing much viability. Stigma remains receptive for 5 to 18 days in the absence of pollen. Maximum receptivity was recorded between 8-12 days of flowering.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on induction of colchiploids.
Personnel :Sikdar AK, Das BC, Sarkar A, Prasad DN, Roy BN, Verma RC, Ananda Rao A, Tikader A, Vijayan K
Project Period :1965-1985
Objective :In order to evolve the productive triploids, tetraploid genotypes of elite diploid need to be evolved for polyploid breeding programme.
Results/Recommendations :Aqueous colchicine at 0.2-0.4% for 9-12hrs. for three consecutive days induces high percentages of colchiploids under cotton swab method. Sprouting buds were most suitable material for induction of colchiploids. A total of 34 chochiploids were developed and evaluated. T21 out of 34 colchiploids was best in terms of leaf production. Tetraploid of S1 and S799 have also been evolved.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title : Studies on evolution of triploids.
Personnel :Sikdar AK, Das BC, Sarkar A, Prasad DN, Roy BN, Verma RC, Ananda Rao A, Tikader A, Vijayan K
Project Period :1965-1995
Objective :To evolve the qualitatively superior mulberry genotype over the existing one for augmenting silk production.
Results/Recommendations :Twenty three female tetraploids and seven male tetraploids were used in controlled crossing with 18 selected diploid genotypes. 33 superior triploids were selected and after evaluation in PYT and FYT, 2 varieties viz., TR10 and S1635 were recommended for hill and plains of West Bengal respectively. Further 3375 F1 hybrids obtained from OPH and controlled crossing are under screening.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on comparative performance of diploids and polyploids.
Personnel :Das BC, Sarkar A, Sikdar AK, Roy BN, Tikader A, Vijayan K, Prasad DN
Project Period :1972-1994
Objective :
Results/Recommendations :Consumption and digestion in silkworm were significantly higher when fed with in triploid mulberry varieties compared to diploids and tetraploids. Cocoon characters improved significantly through feeding with triploid leaves.
Rooting ability of triploid mulberry varieties shows better than diploid and tetraploid.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Improvement and evolution of desirable genotype through mutation and polyploid breeding - Induction of mutation through physical and chemical mutagen.
Personnel :Sarkar A, Roy BN, Chakroborti SP, Sarkar S, Raghunath MK, Vijayan K, Gandhi Doss S
Project Period :1977-1994
Objective :To create a variability and evolution of qualitative and quantitatively superior genotypes over the ruling one.
Results/Recommendations :Physical and chemical mutagen of different doses and molar concentrations were used on pollen, seed, seedlings and buds. Morpho-mutants were observed in M1 generations. X-ray doses of 5-20 kR, gamma rays of 1.25 to 60 kR from cobalt 60 acute source, EMS of 0.04-0.1 and DES of 0.0038-0.0304 molar concentrations were used for 2-15 hrs. duration. Above 40 kR gamma rays were found lethal for mulberry.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Evolution of stress tolerant mulberry variety.
Personnel :Das BC, Sarkar A, Chakraborty S, Chakroborti SP, Chauhan SS, Sau H, Ananda Rao A
Project Period :1983-1989
Objective :Selection and evaluation of different biotic and abiotic stress tolerant genotypes for commercial use.
Results/Recommendations :Drought salinity, disease and pest tolerant genotypes have been identified on the basis of physio-anatomical characters as well as incidence of diseases and pests. Simultaneously response against different artificial stress, viz., thermal stress upto 50°C for 3-25 hrs, salinity stress through 0-2% salt solution was studied.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Evolution and screening of superior varieties through tissue culture - Standardization of protocol and technique for in vitro study.
Personnel :Roy BN, Chakraborti SP, Chakraborty S, Sarkar S, Tiwary PK, Narayan P, Raghunath MK, Vijayan K, Qadri SMH
Project Period :1986-1995
Objective :To evolve the appropriate protocol for screening of large populations in smaller area with minimum recurring expenditure suitable for specific areas.
Results/Recommendations :
· Protocol on regeneration of plants from nodal explant, shoot tip, callus is developed.
· Technique has been developed for in vitro flowering and fertilization between non-synchronous genotypes.
· A somaclonal variant of popular S1 has been developed which out yields S1 by 15%.
· Rhizogenesis and induction of globular embryoid has been achieved in anther culture.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Primary screening of stress tolerant mulberry genotypes.
Personnel :Roy BN, Chakraborti SP, Chakraborty S, Sarkar S, Tiwary PK, Narayan P, Raghunath MK, Vijayan K, Qadri SMH
Project Period :1986-1995
Objective :To screen genotypes in artificial stress condition (in vitro).
Results/Recommendations :Four genotypes have been screened as salt tolerant.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Refinement of experimental techniques.
Personnel : Sursh Rai, Das NK, Nair BP
Project Period :1990-1996
Objective :To develop a most refined experimental techniques.
Results/Recommendations :Starting from the ninth month after plantation, two full years leaf harvest and other morphological data of each plant (position wise) have been collected. CV (%) of leaf yield in any particular size of plot was less in any season in the second year than that in the corresponding season of the first year. In both the years, the leaf yield in the post monsoon harvest (November) exhibited much higher variability than in the other seasons.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on environmental stress in mulberry in relation to drought and water logging - Characterization of water logging on the basis of growth and rearing performance
Personnel :Das BC, Shiv Nath, Chatterjee S, Sengupta T
Project Period :1991-1998
Objectives :To study the environmental stress in mulberry cultivation.
Results/Recommendations :
· Average pooled data of 3 years revealed that relative water content, moisture percentage, electrical conductance and ethylene were increased after 10 days of water logging, whereas total chlorophyll, total protein and sugar gradually declined with increase in water logging period. Photosynthesis and physiological water use efficiency were decreased over control respectively by 2.7 and 1.7 fold after 15 days of flooding.
· Bioassay revealed that water excess stress accelerated the senescence syndrome in mulberry and found to reduce the cocoon yield by 25% and absolute silk content to 33%.
· Bioassay with N x G hybrid showed Kinetin based PGR considerably increased leaf yield by 30% and cocoon yield by 20% through foliar spray on water logged leaves. The economics of leaf yield revealed that a farmer of flood prone area can earn Rs.1392 per hectare per crop by selling excess leaves through foliar spray of Kinetin based PGR.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on environmental stress in relation to drought and water logging – Physio-biochemical screening of drought tolerant varieties of mulberry at natural drought prone area.
Personnel :Das C, Chatterjee S, Mishra AK
Project Period :1991-1996
Objectives :To study the physio-biochemical parameters on stress in mulberry cultivation.
Results/Recommendations :Seven mulberry varieties were taken for physio biochemical screening at natural drought prone areas - Purulia, West Bengal, paddy straw mulching was given from November to March. Among the seven mulberry varieties C1730 showed better performance in respect of leaf yield, moisture content, total chlorophyll, total protein and cocoon yield followed by S1 and S13. Paddy straw mulching increased the leaf yield more in C1730 (56%) followed by S34 (50.6%) over control.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on environmental stress in mulberry in relation to drought and water logging - Physio-biochemical screening of water logged tolerant varieties of mulberry.
Personnel :Das C, Setna M
Project Period :1994-1996
Objectives :To study the physio-biochemical screening of water logged tolerant varieties of mulberry.
Results/Recommendations :Water logging treatment for 10 days duration at 5 days interval was given to 7 mulberry varieties (Jatinuni, Kanva-2, Koliakotai, S1635, S1, Malda local and Kolitha-3). Different morphological physio-biochemical and yield parameters were studied. Maximum reduction in leaf yield was found in Kolinakotai (59%) followed by S1 (37%) after 10 days of water logging. Photosynthetic rate was also reduced maximum in S1 and Koliakotai.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on environmental stress in relation to drought and water logging-Studies on the drought induced cellular events in mulberry.
Personnel : Das C, Mishra AK, Setna M, Sengupta T
Project Period :1994-1998
Objectives :To study the environmental stress in relation to drought and water logging induced cellular events in mulberry.
Results/Recommendations :Seven mulberry varieties were raised in earthen pots under controlled green house condition. Data on physio-biochemical parameters were taken at different moisture regions.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Evaluation of improved mulberry varieties for Eastern and North eastern region of India.
Personnel :Saratchandra B, Chinu Das, Mishra AK, Sengupta T, Srivastava PP, Das P, Rajkhowa G, KVSN Rao
Project Period :1998-2003
Objectives :
· To find out critical moisture limits for survival and growth of mulberry genotypes,
· To find out quality and foliage productivity of different genotypes in relation to soil moisture at different eco-zones,
· To find out study the moisture stress related to physiological and biochemical changes in different genotypes which can serve as indicators for stress tolerance and water use efficiency
· To find out identify suitable mulberry breeds for water stress environment.
Results/Recommendations :S1635 identified as suitable variety for gangetic alluvial soils of West Bengal in irrigated and rainfed conditions, in hilly areas of Darjeeling, JRH in Assm,C-1730, S34 and S1635 in lateritic soil of West Bengal, Orissa and Jharkhand respectively. Recommendation was made that S1635 variety suits well in gangetic plain of West Bengal, both in irrigated and rainfed conditions and also in Jharkhand area and for hilly areas of Darjeeling. JRH variety suits best in Assam, S34 found suitable for Koraput (Orissa) and C1730 suits well in red lateritic soil of West Bengal.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Primary evaluation of new mulberry lines for their yield and quality.
Personnel : Chakraborti SP, Chakraborty D, Sengupta T
Project Period :2000-2004
Objectives :To short list the mulberry genotypes for inclusion in the final yield trial.
Results/Recommendations :Out of 9 genotypes, CCB4, CCB5 are significantly superior to S1635 in leaf quality parameters, which are at par with S1635, the existing high yielder. The feeding quality of the two genotypes was also at par with S1635. On the basis of the performance none of the tested genotypes could be selected for late age silkworm rearing. However, these two genotypes may be tried for young silkworm rearing.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Screening of improved mulberry varieties for flood tolerance.
Personnel :Saratchandra B, Das C, Mishra AK, Ghosh MK, Sengupta T
Funding Source :CSB, Bangalore
Project Period :2001-2005
Objectives :
· To identify the best suited mulberry variety for flood prone areas from among the improved mulberry varieties and
· To study the changes in yield and quality of leaf, morphoanatomical and physio-biochemical characteristics occurring due to or associated with flooding and water logging.
Results/Recommendations :
· Variety C2028 suits best for flood prone areas as it shows higher leaf yield, low leaf fall percentage, high photosynthetic rate and membrane stability and higher abscissic acid content after 30 days of flooding.
· C2028 variety suits best for flood prone areas.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Agronomy
Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Comparative study of establishing plantation through seedlings, cuttings and grafts.
Personnel :Mukherjee SK et al
Project Period :
Objectives :To study the comparative plantation performance raised through seedlings, cuttings and grafts.
Results/Recommendations :The results showed that the cuttings out yielded others with an yield of 13,744 kg/ha leaves (average of 5 years). This was followed by seedlings (11,396 kg/ha) and grafts (10,574 kg/ha).
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on grafting methods in Morus indica (local variety)
Personnel :Mukherjee SK et al
Project Period :1955-1958
Objectives :
· To study the best method and time of grafting.
· To study the relative compatibility of tree bush scions.
Results/Recommendations :
· In whip grafting the average success was 25.8% followed by ring grafting 20.8% and bar grafting 3%. The best season of planting grafts is July-October (55-80%) (Whip method).
· Tree scions and bush scions showed same compatibility i.e., 68.2% and 72.6% respectively.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on grafting in foreign mulberry strains.
Personnel : Mukherjee SK et al
Project Period :1957-1960
Objectives :
· To study the most suitable type of grafting and the favorable seasons.
· To study the compatibility of local stocks to foreign scions.
Results/Recommendations :
· July to October was the best time for both whip and root grafts with a survival of 23.9% and 39.0% respectively.
· The Australian variety was the best with a survival of 15-20%. The ring method showed 14.2-14.7% followed by whip method (8.1-11.3%) and bud grafting (0.8%).
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Experiment on grafting of Morus indica (Berhampore variety) by the Mysore method of root grafting as compared to Berhampore method during different seasons.
Personnel :Mukherjee SK et al
Project Period :1958-1959
Objectives :To study the comparative methods of different grafting methods.
Results/Recommendations :Mysore and Berhampore methods of root grafting showed 70% and 45% respectively in favourable season July to October.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :To study the viability of seed and the effect of chemical on viability and germination in mulberry.
Personnel : Mukherjee S, Das BC, Prasad DN
Project Period :1958-1978
Objectives :To study the effect of chemicals on seed germination.
Results/Recommendations :Rate of germination is higher in heavier seeds as well as 0.15, 0.2, 0.25% HCl or H2SO4 treated seeds. But HNO3 is injurious to seeds. Hot water treatment (92.5% at 49.5°C) also gives higher rate of germination.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the germination of bigger (heavier) and smaller (lighter) seeds of Morus indica from a mixed lot dried at 40°C.
Personnel :Mukherjee SK et al
Project Period :1961-1962
Objectives :To study the seed germination based on the size.
Results/Recommendations :The germination % of bigger seeds (heavier) is more (6.8 and 25.8) than the lighter seeds (5.1 and 22.2) in field and lab. respectively.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Experiment to test if modification of seed extraction method (i.e., by drying ripe fruits at 40°C before seed extraction) has got any effect in enhancing the germination of mulberry seeds.
Personnel :Mukherjee SK et al
Project Period :1961-1962
Objectives :To study the effect of seed harvesting on germination.
Results/Recommendations :The better viability of seeds was found when the seed was obtained from fresh fruit (8.4 and 29.1%) compared to those obtained from dry fruits (3.1 and 18.3%) in laboratory and field respectively.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Experiment on the absorption of water by seeds of Morus indica dried at 40°C in different seasons before germination.
Personnel :Mukherjee SK et al
Project Period :1961-1962
Objectives :To study the water absorption efficiency of mulberry seeds.
Results/Recommendations :The water absorption in different seasons ranged from 42.5 to 49.5%.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Viability of mulberry seeds collected from ripe fruits on different dates during different seasons.
Personnel :Mukherjee SK et al
Project Period :1961-1962
Objectives :To study the germination from the seeds collected from the preserved mulberry fruits.
Results/Recommendations :It was observed that preservation of fruits upto 10 days before extraction does not impair germination as the monthly average percentage of germination of the seeds in the field collected on the 1st day and 10th day were 13.0 and 10.5 respectively.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of high temperature/incubation of mulberry grafts on sprouting and establishment of grafts.
Personnel :Mukherjee SK et al
Project Period :1961-1962
Objectives :To study the sprouting in mulberry grafts treated at high temperature.
Results/Recommendations :Incubated (35-37°C) grafts of Seijuro (Japan variety) showed 51.5% survival against 3.2% in control. Incubated local showed 59.79% survival against 81.29% in control.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Determination of the suitable seasons for planting different varieties of foreign mulberry cuttings.
Personnel :Mukherjee SK et al
Project Period :1961-1962
Objectives :To study the suitable season for planting of exotic mulberry varieties.
Results/Recommendations :It is observed that the sprouting of buds was higher in the months of August (60.49%) and October (54.9%) compared to other months.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of gibberellic acid on the growth of mulberry.
Personnel :Mukherjee SK et al
Project Period :1962-1964
Objectives :To study the effect of gibberellic acid mulberry seed germination.
Results/Recommendations :Gibberellic acid increased germination of mulberry seeds substantially and induced elongation of stem.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of hormones on the rooting performance of three popular exotic varieties, Kosen, Tomieso and Ichinose.
Personnel :Mukherjee SK et al
Project Period :1962-1964
Objectives :To study the effect of hormones on the rooting performance of three popular exotic varieties.
Results/Recommendations :It is observed that hormones have no appreciable effect in inducing rooting in the varieties studied.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on propagation of mulberry through cuttings - Correlation between age, thickness and depth of planting of cuttings on sprouting and establishment during different seasons.
Personnel :Mukherjee SK et al
Project Period :1963-1966
Objectives :To study the correlation between age thickness and depth of planting of cuttings on sprouting and establishment during different season.
Results/Recommendations :More branches and leaves are produced from 4 to 6 months old cuttings. 13 to 14 mm diameter branches are found in the seasons July and September.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on response of mulberry to different doses of NPK and FYM.
Personnel :
Project Period :1963-1968
Objectives :To study the mulberry response to NPK and FYM application.
Results/Recommendations :336 kg N, 180 kg P2O5, 112 kg K2O and 22,000 kg FYM/ha/yr gave the highest leaf yield. P and K have no such significant effect on leaf yield. Nitrogen increases moisture and crude protein % of leaves considerably and total sugar content of leaves to some extent. Starch content does not appear to be influenced by any of the treatment. Application of nitrogen decreases the mineral content.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Study on the fate of added phosphate in mulberry soil.
Personnel :
Project Period :1964-1965
Objectives :To study on the fate of added phosphate in mulberry soil.
Results/Recommendations :Though the soil under experiment was neutral in reaction and sandy loam in texture, within three weeks of application about ¾th of the added phosphate was rendered unavailable being converted to insoluble compounds of Iron, Aluminium and Calcium phosphate.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Study on the rate of decomposition of compost (mulberry) manure in soil
Personnel :NA
Project Period :1964-1965
Objectives :To study the rate of compost decomposition in mulberry garden soils.
Results/Recommendations :The decomposition of cow-dung manure is quicker than that of compost prepared from mulberry. After 2 months, the compost prepared from mulberry starts to decompose. Application of Super Phosphate makes the decomposition process quicker. The application of Ammonium Sulphate did not hasten the decomposition of compost.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on varietal trial cum pruning experiment on mulberry.
Personnel :Mukherjee SK et al
Project Period :1964-1969
Objectives :To study the pruning response to different mulberry varieties.
Results/Recommendations :It was observed that Mandalay variety out yielded others with an average yield of 20,260 kg/ha. This was followed by that of local cultivators (19,926 kg/ha) and CSRS-II (15,909 kg/ha). CSRS-I yielded least (15,518 kg/ha). Two times pruning yielded higher as compared to one time pruning except in CSRS-I.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Experiment to study the effect of cut-ends on rooting of cuttings under pot culture.
Personnel : Mukherjee SK
Project Period :1964-1966
Objectives :To study different shoot cut-ends (Chisel cut, Pen cut, Knife injury, Flat cut and Local cut (control) on rooting in three mulberry varieties.
Results/Recommendations :It was observed that variety and seasons of planting influence rooting and survival more than the nature of the cut.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Experiment on spacing trial for mulberry.
Personnel :Mukherjee SK et al
Project Period :1964-1969
Objectives :To study different spacings to exploit maximum potential of mulberry varieties.
Results/Recommendations :Maximum yield was obtained in 2'x1' spacing (16,297 kg/ha), followed by local practice (15,866 kg/ha), 2' x 2' (14,141 kg/ha), and 3' x 2' (14,116 kg/ha). The yield was least in 3' x 3' (11,503 kg/ha).
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on mulberry response to different levels of irrigation under two systems of planting (Bengal and Mysore systems).
Personnel :Mukherjee SK
Project Period :1965-1969
Objectives :To study the mulberry yield response under different planting systems under 2 systems of planting.
Results/Recommendations :Bengal system out yielded the Mysore system (3'x3'). Fortnightly irrigation produced more leaves than monthly irrigation.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the decomposition of mulberry compost in soils of Kalimpong.
Personnel :
Project Period :1965-1966
Objectives :To study the rte of decomposition of compost in mulberry garden at Kalimpong.
Results/Recommendations :In contrast to understanding, decomposition of compost at Kalimpong is faster than that of neutral soil at Berhampore. Addition of lime along with compost increased the decomposition rate of the same.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Experiment to study the response of mulberry to dates of planting, spacing and pruning.
Personnel :Mukherjee SK
Project Period :1965-1969
Objectives :To study the mulberry response to planting spacing and different types of pruning.
Results/Recommendations :Three times pruning produced more leaves than two times pruning. 2'-3' spacing showed the best performance. Effect of pruning time on chemical composition of leaf showed mixed trend.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on effect of foliar spray of urea on the yield and quality of mulberry leaves.
Project Period :1965-1969
Objectives :To study the effect of foliar spray of urea o qualitative and quantitative parameters.
Results/Recommendations :Foliar application of urea @ at 56 kgs N/ha is more efficient than urea applied at 56 kgs N/ha in soil. There is no significant difference in the nutritive value of mulberry leaves.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on effect of irrigation on chemical composition of mulberry leaves.
Project Period :1966-1969
Objectives :To study the effect of irrigation on chemical composition of mulberry leaves.
Results/Recommendations :Fortnight irrigation increased the protein and moisture % of leaves over monthly irrigation, other parameters remains the same in both the cases. Too much irrigation is harmful for mulberry leaves when chemical constituents of mulberry leaves are considered.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Correlation studies on leaf yield and components in mulberry.
Personnel : Krishnaswamy S, Das BC, Sarkar A
Project Period :1968-1994
Objectives :To study correlative response of mulberry leaf yield with other parameters.
Results/Recommendations :Leaf yield is positively correlated with plant height, tillers/plant, leaf weight and leaf size.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on pruning-cum-fertilizer treatment for maximising the yield of leaves.
Personnel :Mukherjee SK, Sikder AK, and Sengupta D
Project Period :1969-1975
Objectives :To study pruning cum fertilizer treatment for maximizing the yield of leaves.
Results/Recommendations :Irrigated plots with N2 treatment yielded 13,479 kg/ha, while those with no N2 yielded 8,057 kg/ha. Leaf harvesting by plucking yielded maximum (12,608 kg/ha) followed by cutting at half height (11,146 kg/ha). Least yield was obtained by cutting at the base (8,390 kg/ha).
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the green manuring at one and in combination with Ammonium sulphate on the yield and quality of mulberry leaves.
Personnel :Roy D, Gupta BK, Chinya PK
Project Period :1969-1973
Objectives :To study the effect and feasibility of green manure on yield ad quality of mulberry leaves.
Results/Recommendations : Dhaincha is good for green manuring in mulberry, Dhaincha @100 kg N/ha gave better results. It also increases crude protein % in mulberry leaves.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Determination of changes in the nutritive value of leaves starting from pruning till harvest of the crops.
Personnel : Roy D
Project Period :1969-1970
Objectives :To study the age dependent nutritive value of mulberry leaves.
Results/Recommendations :Water and crude protein content of mulberry leaves decreases with the age of plants.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Determination of changes in the yield and nutritive values of leaves at different stages of maturity with different doses of nitrogen.
Personnel : Roy D
Project Period :1970-1972
Objectives :To study the nutritive variability at different stages of maturity with different nitrogen application levels.
Results/Recommendations :Application of 300, 600, 900, kg N/ha has been tried and the results are as follows. Higher application of nitrogen resulted in higher leaf yield. Considering ratio of increment, 600 kg N/ha has been found to be the best. Increase in the level of nitrogen increases crude protein % irrespective of maturity. 75 days mature leaves contain higher amount of protein and carbohydrate
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :A comparative study of the soil and foliar application of nitrogenous fertilizers.
Personnel : Roy D, Gupta BK, Chinya PK
Project Period :1970-1974
Objectives :To study the effect of soil and foliar application of nitrogenous fertilizers on yield and quality of mulberry leaf.
Results/Recommendations :50 kg N/ha as soil application and 50 kg N/ha as foliar application produces maximum leaf yield. Protein and sugar percentages were also higher in this treatment.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on mulberry with reference to varieties, spacing, manuring, irrigation and irrigation.
Personnel :Mukherjee SK, Chakravorty S
Project Period :1970-1982
Objectives :To study the response of mulberry with reference to varieties, spacing and irrigation.
Results/Recommendations :
· S1 (Mandalaya) out yielded 30,915 kg/ha followed by S15 (25,352 kg/ha) and Local (22,180 kg/ha). 1' x 1' spacing yielded 23,833 kg/ha. 900 kg N2/ha produced highest leaf yield (36641 kg/ha followed by 600 kg/ha (31,874 kg/ha) and 300 kg/ha (28,607 kg/ha). Least yield (12661 kg/ha) was found in no nitrogen treatment. Chlorophyll ‘A’ was found highest in S1 followed by S15. Total chlorophyll ‘A’ and ‘B’ was highest in 900 kg Nitrogen treatment followed by 600 kg and 300 kg N2. Total Protein and carbohydrate were highest in S1 followed by S15 when treated with 900 kg N/ha.
· Varieties C776, S799 and S1 were superior to local cultivars. Among different levels of nitrogen, 336 kg N/ha/year produced highest amount of leaves. Irrigation as well as spacings had no significant influence upon leaf yield.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of foliar spray of gibberellic acid on the yield of mulberry.
Personnel : Mukherjee SK, Sikdar AK
Project Period :1972-1975
Objectives :To study the feasibility of gibberellic acid spray to increase the mulberry leaf yield.
Results/Recommendations :The result indicated that gibberellic acid has no substantial effect in increasing the yield of mulberry leaves.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on root initiation and establishment of mulberry cuttings with hormones (in pot culture).
Personnel : Mukherjee SK et al
Project Period :1972-1975
Objectives :
· To study the effect of growth regulators and vitamins on rooting of hard wood cuttings of the strain S146, under ringed and unringed conditions.
· To study the studies on the effect of ringing and growth regulators in inducing rooting in mulberry variety Kosen.
· To study the effect of ringing and growth regulators on the root development of three exotic and one local variety and the changes in the chemical constituents in the wood and bark due to ringing.
· To study the effect of ringing, growth promoters and sucrose either singly or in combination on the rooting of mulberry cuttings.
· To study the effect of some growth regulators on the rooting of mulberry cuttings.
· To study the effect of auxins, vitamins and their combinations on the rooting of mulberry cuttings.
· To study the Influence of leaves and buds on the rooting response of mulberry cuttings in relation to synthetic growth substances.
Results/Recommendations :
· Ringed cuttings gave better performance in all aspects and showed cent percent survival under treatment with 2,4D.
· Kosen (ringed cuttings) responded to hormone treatments 2,4D at 50 ppm
· Chemical analysis revealed more protein and total carbohydrates near root zones in ringed cuttings than in unringed ones.
· Ringed cuttings gave better survival and establishment in Kosen variety as compared to the unringed. IAA and 2,4-D when applied either separately or in combination with 2% sucrose have shown no effect.
· All the hormones 1AA, 1BA, NAA and Seradix B showed root promoting effects. An increase in concentration in 1AA from 100 to 500 ppm induced better rooting while reverse sequence was observed in IBA and NAA.
· Auxin when used at the concentration of 125 ppm had the best results. Addition of Ascorbic acid to thiamine did not improve rooting. NAA when used alone was least effective.
· The non leafy cuttings with four buds when treated with 200 ppm IAA+2% sucrose showed highest survival, more number of branches and length/plant. The maximum gain in dry matter was obtained after an interval of 60 days.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the effect of different doses of ammonium sulphate and lime on soil composition, leaf yield and nutritive value of mulberry leaves.
Personnel :Roy D, Gupta BK, Chinya PK
Project Period :1972-1980
Objectives :To study the effect of different doses of Ammonium sulphate and lime on soil composition, leaf yield and nutritive value of mulberry leaves.
Results/Recommendations :Leaf yield increases with the increased application of nitrogen. Lime has no effect on leaf yield.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of micronutrients on the yield and chemical composition of mulberry leaf.
Personnel :Roy D
Project Period :1973-1980
Objectives :To study the effect of micronutrients of mulberry leaf yield and chemical composition of mulberry leaf.
Results/Recommendations :The treatment effects are found to be non-significant.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Comparative study of the different nitrogenous fertilizers on the soil composition, leaf yield and nutritive value of mulberry leaf.
Personnel :Roy D
Project Period :1974-1979
Objectives :To study the effect of different level of nitrogenous fertilizers on the soil composition, leaf yield ad nutritive value of mulberry leaf.
Results/Recommendations :Among Ammonium sulphate, Ammonium sulphate nitrate, Calcium ammonium nitrate and urea, urea have been found to be the best.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of multiple cropping on mulberry.
Personnel :Roy D, Sinha A K
Project Period :1974-1979
Objectives :To study multiple cropping system on mulberry for higher returns.
Results/Recommendations :Among wheat, mung, soyabean, soyabean has been found to be the best companion crop for mulberry.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on root-initiation in low rooting strain of mulberry. (In pot cultures).-Study on the effect of different concentrations of thiamine (Vit.B-1) and Asparagine (Amino acid) and their combinations on the rooting behaviour of "ringed" and "unringed" cuttings prepared from different zones (base to apex) of a branch.
Personnel :Mukherjee SK, Chakravorty S
Project Period :1974-1975
Objectives :To study the effect of different concentrations of vitamins and amino acids on rooting behaviour of ringed and unringed cuttings.
Results/Recommendations :Ringed cuttings showed better survival than unringed cuttings. Among the multiple ringed cuttings there was a progressive increase in survival of cuttings from the base towards the apex. Thiamine and Asparagine when combined in equal conc. (100 ppm each) showed maximum survival in cuttings ringed near the top.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of different concentrations of Thiamine (vit. B-1) and Asparagine (Amino acid) and their combinations on the rooting behaviour of "ringed" and "unringed" cuttings when a single cutting is prepared from each branch.
Personnel :Mukherjee SK et al
Project Period :1974-1975
Objectives :
· Determination of total RNA and DNA contents (P32) incorporation into RNA and DNA of wood and bark in ringed and unringed cuttings.
· Determination of total protein, carbohydrate and chlorophyll contents in "ringed" and "unringed" cuttings.
Results/Recommendations :
· Ringed cuttings with asparagine treatment at 50 ppm concentration gave the highest survival.
· More RNA and DNA contents were observed in "ringed" cuttings. Asparagine and Thiamine increased the contents of RNA and DNA either singly or in combination as compared to the control. Total protein, carbohydrate and chlorophyll contents increased in "ringed" cuttings. Asparagine and Thiamine also increased.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of different concentrations of NAA and 2,4-D on the rooting behaviour of "ringed" and “unringed" cuttings prepared from the different zones (base to apex) of a branch of mulberry.
Personnel :Mukherjee SK et al
Project Period :1974-1975
Objectives :
· To study the effect of different concentrations of NAA and 2,4-D and their combinations on the rooting behaviour of "ringed" and "unringed" cuttings when a single cutting is prepared from each branch.
· To study the determination of protein, carbohydrate, chlorophyll, RNA and DNA contents in "ringed" and "unringed" cuttings treated with NAA 2,4-D.
Results/Recommendations :
· Apical ringed cuttings treated with 2,4-D at 50 ppm gave highest survival.
· A single ring on a branch at the base induces higher survival and establishment As compared to multiple rings.
· Contents of protein, carbohydrate, chlorophyll as well as RNA and DNA were found to increase in "ringed" cuttings.
· NAA and 2,4-D also enhanced the values.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :A study on the yield of mulberry leaves under Bengal and Mysore systems of cultivation under different spacings.
Personnel :Mukherjee SK, Das BK
Project Period :1974-1975
Objectives :To study the mulberry yield under Bengal ad Mysore systems of cultivation under different spacings.
Results/Recommendations :It was observed that Kolar system (1' x 6”) yielded maximum (14,889 kg/ha) followed by Bengal system (10,989 kg/ha) and Mysore system 3' x 2’ (9,555 kg/ha). Least yield was observed in Mysore 2' x 1' (8,934 kg/ha).
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of different levels of nitrogen fertilization and pruning methods.
Personnel :Mukherjee SK et al
Project Period :1975-1982
Objectives :To study different nitrogen fertilization and pruning.
Results/Recommendations :336 kg Nitrogen/ha/year produced more leaves. Irrigation 1 acre inch per month was found to be beneficial. Pruning at half height during the year and one ground level pruning (June-July) produced more leaf than ground level cut through out the year.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Economics and comparison of the yield of mulberry leaves in different forms of Bengal system under two levels of nitrogen.
Personnel :Mukherjee SK et al
Project Period :1975
Objectives :To study the effect of nitrogen levels on yield of mulberry leaves and on economics.
Results/Recommendations :Highest leaf yield was obtained in the system where cuttings were horizontally planted under soil followed by 1.5' x 3". Hatipaya system showed least yield. Nitrogen applied @ 224 kg/ha enhanced yield considerably as compared to nitrogen applied @ 112 kg/ha.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of hormones and growth regulators on the yield of mulberry.
Personnel : Mukherjee SK et al
Project Period :1975-1980
Objectives :To study the effect of hormones and growth regulators on yield parameters in mulberry.
Results/Recommendations :None of the treatments was found effective for increasing leaf yield significantly.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of spraying of growth regulators and morphaetins on kosen variety in inducting femaleness.
Personnel :Mukherjee SK et al
Project Period :1976-1977
Objectives :To study the effect of growth regulators and morphaetins in inducing femaleness.
Results/Recommendations :Maximum femaleness was induced by Morphaetin (50 ppm) followed by Cycocel (500 ppm) and IAA (1000 ppm) respectively.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on chemo-assay of leaves of different promising strains evolved by the MBG section.
Personnel :Roy D
Project Period :1977-1978
Objectives :To study the chemo-assay of promising mulberry strains.
Results/Recommendations :The promising varieties subjected for the studies are S799, C776, S1301, S642, S1531, C741, C763, S146, S1289, C530 and S1 local. The results does not show any significant differences in moisture, minerals, protein, reducing sugars, total sugars, starch, total carbohydrates and fibre content.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on root initiation and growth in different strains of mulberry (pot culture).
Personnel :Mukherjee SK et al
Project Period :1976-1980
Objectives :To study the root initiation and growth indifferent strains of mulberry under pot cultures.
Results/Recommendations :
· Cuttings (size 5") treated with 50 ppm ascorbic acid showed the highest survival (70%). Ringed cuttings treated with IAA (1000 ppm) and IBA (1000 IBA) showed highest survival (about 70%).
· Difference between etiolated and non-etiolated condition was not so pronounced. Application of hormones etc., in Lanelin paste to ringed cuttings could not enhance further survival as compared to ringed ones. Coloured light did not show any effect on survival. Cuttings with 3 to 4 buds showed higher survival under ringed conditions as compared to others. Hydroxy cinnamic acid at 100 ppm concentration increased the survival percentage in ringed cuttings (about 66%).
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Comparative study of different nitrogenous fertilizers with suphala on leaf yield and nutritive value of mulberry leaves.
Personnel :Roy D
Project Period :1978-1983
Objectives :To study the influence of suphala on leaf yield and nutritive value of mulberry leaves.
Results/Recommendations :Between suphala (22.20) and straight fertilizer (Urea, CAN), straight fertilizers gave more leaf yield than complex fertilizers.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of N2 fixing bacteria (Azotobacter) on the growth and leaf yield of mulberry.
Personnel :Viswanathan K, Kabir NE
Project Period :1980-1984
Objectives :To study the effect of Azotobacter bacteria on growth and yield parameters of mulberry.
Results/Recommendations :Application of basic dose of FYM (50 kg N2/ha/yr) + full dose of P and K (180 kg +112 kg/ha/yr) + 25% N2 through biofertilizer by spray + 75% N2 through chemical fertilizer increased the leaf yield by 5% compared to control i.e. basic dose of FYM (50 kg N/ha/yr) +NPK 336 : 180 : 112 kg/ha/yr.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Growth analysis of mulberry at different planting geometry on the feasibility of intercropping and its agronomical appraisal.
Personnel :Viswanathan K, Sinha AC
Project Period :1980-1984
Objectives :To study different planting geometry on the feasibility of intercropping and its agronomical appraisal.
Results/Recommendations :Sowing of green gram during February and May as intercrop between the strips of 75 cms gap of mulberry has been found beneficial without deterioration in leaf yield (17,447 kg/ha/yr) compared to control (18,083 kg/ha/yr) (45 cm x 15 cm).
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Package of practices of mulberry under rainfed and irrigated conditions.
Personnel : Kabir NE
Project Period :1981-1987
Objectives :To develop a package and practices of mulberry cultivation under both rainfed and irrigated conditions.
Results/Recommendations :In both rainfed and irrigated conditions, S1 was found to be the highest leaf yielder (17,848 kg/ha and 26,632 kg/ha) than the local one (14,691 kg/ha and 20,214 kg/ha). The increase in yield under irrigated condition over rainfed was 37.6% in local, 49.2% in S1 and 41.4% in S799.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the residual effect of suphala on the crude protein content of mulberry leaves.
Personnel :Chinya PK
Project Period :1982-1983
Objectives :To study the effect of suphala on biochemical parameters of mulberry.
Results/Recommendations :There is a tendency in increasing protein % due to residual effect in the application of high dose (300 kg/ha) suphala.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the effect of Tracel-2 on mulberry.
Personnel :Chinya PK, Sen P
Project Period :1984-1986
Objectives :To study the effect of Tracel-2 on mulberry.
Results/Recommendations :Tracel has got no effect in increasing leaf yield of mulberry. It can increase the protein % of mulberry leaves.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on different methods of pruning in bush mulberry under rainfed and irrigated conditions.
Personnel :Viswanathan K, Kabir NE
Project Period :1984-1985
Objectives :To study different methods of pruning in bush mulberry under rainfed and irrigated conditions.
Results/Recommendations :Pruning at half height in February and May and plucking in August and November recorded higher leaf yield (22,834 kg/ha/yr) compared to 4 times ground level pruning (15855 kg/ha/yr).
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of split application of nitrogen on leaf yield of mulberry under rainfed condition in West Bengal.
Personnel :Viswanathan K et al
Project Period :1984-1987
Objectives :To study the effect of split application of nitrogen on leaf yield of mulberry under rainfed condition.
Results/Recommendations :Application of 150 kg N/ha/yr recorded the highest yield (14,303 kg/ha/yr) followed by 100 kg N/ha/yr (13,267 kg/ha/yr) and 50 kg N/ha/yr (12,556 kg/ha/yr) and control without nitrogen (10,723 kg/ha/yr) thereby showing an increase of 33.3%, 23.7% and 17.09% respectively over control. There was no significant difference in yield due to variance of N2 doses.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Field trials on split application of nitrogen under irrigated condition.
Personnel :Viswanathan K et al
Project Period :1984-1987
Objectives :To study the split nitrogen application in the field under irrigated conditions.
Results/Recommendations :Application of 336 kg N/ha/yr in 8 split doses @ 1/6th (1/2 +1/2) in March, April and June, July and 1/3rd (1/6+1/6) each in September October, December, February after 25 and 50 days of pruning showed the highest leaf yield (25883 kg/ha/yr) followed by application 336 kg N in 8 equal split doses, (24428 kg/ha/yr). Thereby showing 16.4% and 9.8% increase in yield respectively over application of same dose of N in 4 equal split doses.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on soil and foliar application of trace elements on mulberry leaves with or without Single Super Phosphate.
Personnel : Sen P
Project Period :1985-1988
Objectives :
Results/Recommendations :Soil application exerted no significant effect on leaf yield or quality while foliar application specially Molybdenum (MO) increased protein % of leaf.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of foliar application of parasphotosynth (Mixtalol) on the growth and leaf yield of mulberry.
Personnel :Roy D, Purohit KM
Project Period :1985-1988
Objectives :To study the effect of foliar application of parasphotosyth on growth and leaf yield of mulberry.
Results/Recommendations :Application of 0.375% parasphotosynth (mixtalol) in one season after 25 days of pruning resulted in maximum leaf yield (27831kg/ha/yr) which was 31.89% increase in yield over no paras control.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of top clipping on the growth and developmental pattern of Mandalaya mulberry under rainfed condition in West Bengal.
Personnel :Roy D, Kabir NE
Project Period :1985-1986
Objectives :To understand the effect of top clipping on the growth and developmental pattern of mulberry under rainfed condition.
Results/Recommendations :Topping and desuckering resulted increase in fresh and dry weights of leaves by 16.67% and 29.69% respectively over uptopped control.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the effect of CAN on mulberry in Kishanganj in collaboration with steel authority of Indian Ltd.
Personnel :Chinya PK
Project Period :1985-1986
Objectives :To understand the effect of CAN on mulberry cultivation.
Results/Recommendations :CAN has increased the leaf yield over urea in Kishanganj, Bihar.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Maintenance of mulberry garden for chawki rearing - Evaluation of phosphorus and potash requirement for chawki garden.
Personnel :Roy D et al
Project Period :1986-1987
Objectives :To standardize P and K requirements for chawki garden.
Results/Recommendations :The treatmentwise yield of leaves was found significant.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Determination of pruning schedules for maximisation of leaf yield and quality - Effect of bottom, middle and stepwise pruning on quality and quantity of mulberry leaf.
Personnel :Roy D, Roy I, Kabir NE
Project Period :1986-1990
Objectives :To understand the effect of bottom, middle and stepwise pruning on quality and quantity of mulberry leaf production.
Results/Recommendations :Ground level pruning in May and August and leaf plucking in November and February resulted in higher leaf yield (27,661 kg/ha/yr) compared normal practices of 4 times ground pruning. February, May, August and November (25,137 kg/ha/yr).
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on sericulture fishery ecosystem Studies on the effect of silkworm litter on growth of fishes and utilization of tank silt for the growth of mulberry followed by silkworm rearing.
Personnel :Roy D, Roy I, Kabir NE
Project Period :1987-1990
Objectives :To integrate fishery and sericulture for better returns.
Results/Recommendations :The yield of mulberry increased significantly with the combined use of organic materials and nitrogen fertilizer in gangetic alluvial soil. Application of tank silt at 20 t/ha/yr along with NPK at 150:50:50 kg/ha/yr increased leaf yield by 11.59% followed by household waste at 20 t/ha/yr along with NPK at 150:50:50 kg/ha/yr of 5.33% over control.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Project Title :Effect of different mulches on soil temperature moisture conservation and leaf yield of mulberry under rainfed condition during winter in West Bengal.
Personnel :Roy D, Purohit KM
Project Period :1987-1989
Objectives :To study the effect of different mulches on soil moisture conservation d on leaf yield.
Results/Recommendations :The experiment was conducted during the winter seasons of 1987-89. Highest leaf yield was recorded in case of "Ulu" grass mulch (3941.5 kg/ha) followed by water hyacinth (3861 kg/ha) and coconut leaf (3647 kg/ha); the gain in leaf yield over control (2489.5 kg/ha) being 58.3%, 55.1% and 46.5% respectively.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the chemical composition of leaves (variety S1) under rainfed and irrigated condition.
Personnel :Chinya PK
Project Period :1987-1988
Objectives :To study the biochemical constituents of mulberry leaf under both rainfed and irrigated gardens.
Results/Recommendations :It is observed that irrigation always had a profound role to increase the nutritional composition of all types.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Analysis of mulberry leaves (mixed type) of 11 varieties in germplasm field to assess the moisture and protein %.
Personnel :Chinya PK
Project Period :1987-1989
Objectives :To evaluate the GPB varieties on biochemical parameters.
Results/Recommendations :The varieties Mizusawa, Berhampore-6, Bush Malda-B and Kurseong were found to contain maximum moisture % Rotundiloba was having minimum moisture %. The protein % was maximum in Bogura-1, Auroso, Bush Malda-A, Seijiro and Kenmochi.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of black polythelene and other mulches on soil temperature, moisture conservation and leaf yield of mulberry under rainfed condition.
Personnel :Roy D, Sinha AC, Purohit KM
Project Period :1987-1988
Objectives :To study the feasibility of black polythelene as a moisture conservation material.
Results/Recommendations :During winter highest leaf yield was observed under black polythelene mulch (3,801 kg/ha) followed by paddy straw (3,484 kg/ha) and dry mulberry twigs (3186 kg/ha). The gain in leaf yield over control (2566 kg/ha) being 48.13%, 35.77% and 24.16% respectively.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on analysis of compost.
Personnel :Chinya PK
Project Period :1988-1989
Objectives :To study the chemical constituents of compost.
Results/Recommendations :The materials (mulberry leaves, mulberry leaves with litter, different types of waste materials, poultry litters) were decomposed in a medium type container covering with some earth materials for 4 months. All composts except those prepared from waste materials contained high amount of NPK.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Evaluation of plant training techniques for chawki garden.
Personnel :Roy D and Kabir NE
Project Period :1988-1990
Objectives :To develop training techniques for chawki garden management.
Results/Recommendations :Stepwise pruning 5 times in a year showed the highest yield of chawki leaf (3622 kg/ha) compared to 5 times ground level pruning in a year (2459 kg/ha).
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of foliar application of Spic cytozyme on the growth and leaf yield of mulberry.
Personnel :Roy D, Purohit KM
Project Period :1988-1989
Objectives :To study the effect of foliar spray of Spic cytozyme on mulberry yield.
Results/Recommendations :There was no significant effect of the doses of cytozyme. Application of 0.15% Spic cytozyme only once after 25 days of pruning gave the highest yield 5,246 kg/ha.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of top clipping of mulberry under rainfed condition on rearing performance of silkworm.
Personnel :Roy D, Roy I, Kabir NE
Project Period :1988-1989
Objectives :To study the effect of top clipping of mulberry under rainfed conditions on rearing performance of silkworm.
Results/Recommendations :There was no significant variation in the yield and commercial characters.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of biofertilizer on yield of mulberry.
Personnel :Roy D, Roy I
Project Period :1988-1991
Objectives :To study the effect of biofertilizer on yield of mulberry.
Results/Recommendations :Application of FYM + NPK (336:180:112) and FYM+NPK (336:180:112) + Azotobacter (25 kg/ha/yr) recorded leaf yield of 19,279 and 19,222 kg/ha/yr respectively followed by FYM + NPK application and FYM+NPK @ 112:180:112 kg/ha/yr + Azotobacter 25 kg/ha/yr yielding 18,453 kg/ha/yr and 15602 kg/ha/yr. There was no pronounced effect on leaf due to Azotobacter application.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on vegetative propagation of mulberry.
Personnel :Roy D et al
Project Period :1989-1990
Objectives :
· To study the survival of young age cuttings in West Bengal condition.
· To study the young age stem through layering in West Bengal condition.
Results/Recommendations :October was proved to be the best for propagation, recording a survival of 83.4% in case of cuttings. Topping and hormones had no effect on sprouting and survival. Layering did not show encouraging result with regard to survival. Cuttings registered a sprouting of 62.4% and 90.8% and survival of 48.4% and 87.8% in June and October respectively. It is concluded that cuttings from 4 months old mulberry bush (after pruning) can be propagated successfully.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on propagation of mulberry through young shoots.
Personnel :Satpathy B, Ghosh PL, Ghosh JK
Project Period :1990-1992
Objectives :To understand the feasibility of propagation of mulberry through young shoots.
Results/Recommendations :Propagation efficiency of mulberry through 90 days old cuttings vis-à-vis 240 days old cuttings was studied in two improved varieties viz., S1 and S1635 using IAA and NAA in combination with sucrose solution in two planting seasons. Survival and subsequent growth behaviour of young cuttings (90 days old) was found to be at par with matured (240 days old) cuttings. S1635 cuttings showed significantly higher survival (91.90%) and longer roots (48.49 cm) than S1. Survival of cuttings planted in October and June ranged from 86.01 to 88.38%. Cuttings treated with 100 ppm IAA + 2% sucrose solution registered higher survival rate, but did not show any difference subsequently.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on NPK budgeting for known soil types.
Personnel :Kar R, Dutta RN, Mazumdar SK, Ghosh JK
Project Period :1990-1995
Objectives :To study NPK budgeting for different soil types.
Results/Recommendations :Application of NPK @ 200:90:50 kg/ha/yr has been found to be optimum for gangetic alluvial soil.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on micronutrients on mulberry.
Personnel :Dutta RN, Kar R, Mazumdar SK, Ghosh JK
Project Period :1991-1995
Objectives :To study the effect of micronutrient effect on leaf yield of mulberry.
Results/Recommendations :No definite trend has been observed on leaf yield by the application of micronutrients in gangetic alluvial soil.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of different system of spacing, pruning and doses of fertilizers on the yield and quality of mulberry leaf.
Personnel :Roy I, Ghosh JK, Dutta RN
Funding Source :CSB, Bangalore
Project Period :1991-1997
Objectives :To develop suitable agronomical practices for the production of maximum quantity and better quality of leaf for rearing of improved silkworm races.
Results/Recommendations :The effect of three doses of nitrogen (100, 200 and 300 kg/ha/yr), two types of pruning (ground pruning through out the year and three times ground pruning in March, May, September. as well as 6" above ground level in July and December) and two spacing (45 cm x 15 cm and 60 cm x 60 cm) on three mulberry varieties viz., S1635, C1730 and S1708 revealed that high dose of nitrogen (300 kg/ha/yr), 45 cm x 45 cm spacing and three times ground level pruning in March, May, September and 6" above ground level in July and December was best for S1635. In case of C1730 both types of pruning is advocated while in case of S1708 ground pruning is suggested.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the problematic soil of West Bengal and their amelioration for mulberry cultivation.
Personnel : Dutta RN, Mazumdar SK, Kar R
Funding Source :CSB, Bangalore
Project Period :1991-1996
Objectives :To develop methods for amelioration of problematic soils to make them suitable for mulberry cultivation.
Results/Recommendations :
· A survey was conducted in all the district of mulberry growing zones of West Bengal led to the inference that gangetic alluvial soil and some parts of Vindhyan alluvial soils (comprising of the districts of Murshidabad, Malda, Eastern part of Birbhum, North 24 parganas and some parts of Midnapore) are fairly rich in both available and total phosphate and potash content. The soils of this place are mostly neutral in soil reaction having bulk density in the ranges of 1.1-1.2 gm/cc. These places are highly suitable for mulberry cultivation.
· The soils of Western parts of West Bengal comprising of the districts of the whole of Purulia, Western part of Bankura and Midnapur are low in fertility level. Texture is coarser and consequently the soils are highly acidic in reaction. The soil acidity is a major problem of these areas.
· The lime requirement of the soils of tarai region and red laterite gravelly region of West Bengal were determined.
· For tarai region the lime requirement is 1.0 ton/acre and applied in two split doses – one in pre and another in post monsoon season.
· For red laterite gravelly region dolomite requirement is 0.25 ton/acre in two split doses - one in pre and another in post monsoon season.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Development of mulberry garden for chawki rearing.
Personnel :Roy I, Ghosh JK, Dutta RN
Project Period :1993-1996
Objectives :To study the effect of FYM and NPK on yield of mulberry leaves for chawki rearing.
Results/Recommendations :Application of FYM @ 30 MT and NPK @ 100:100:100 kg/ha/year was found to be the best in respect of qualitative and quantitative production of mulberry leaves. The cost of chawki leaf production was estimated to be Rs.2.91/kg.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Organic farming in mulberry.
Personnel : Setna GC, Sudhakara P, Ghosh JK
Funding Source :CSB, Bangalore
Project Period :1997-2002
Objectives :To find out a suitable package of practices for mulberry cultivation using organic manures and bio-fertilizers to reduce the cost of cultivation and optimize the yield and quality of leaf.
Results/Recommendations :Results revealed that treatment with T3 (90 cmx x 90 cm + VAM + 45-60 cm pruning +N75:P25:K50 + Crotalaria juncea + weed merg.+ Rice bean) among other treatments and control in respect to improvement in growth attributes, leaf yield and quality characters. Thus, the package (T3) viz., mycorrhizal saplings at 90 cm x 90 cm spacing along with green manuring with Crotalaria juncea during rainy season, cover crop with Vigna umbellata during winter season and application of 50% reduced dose of N and P over full dose is recommended to the farmers for adoption in rainfed, gangetic alluvial soil conditions in view of reducing the cost of expenditure for mulberry leaf production with more or similar leaf yield, quality and eco-friendly approach by the maximum use of organic resources and minimum use of chemical fertilizers.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on weed management in mulberry under irrigated condition.
Personnel : Setna GC, Dutta AK, Banerjee ND
Project Period :2001-2003
Objectives :To develop a package for weed control coupled with soil enrichment.
Results/Recommendations :Vigna sinensis (cowpea) was found to be effective towards weed control upto the level of 32.9% in existing garden of mulberry without affecting mulberry leaf yield and quality but reduced 41% expenditure towards the cost of intercultural operations. Therefore, Vigna sinensis (cowpea) is recommended as a weed control measure in mulberry garden.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Mulberry Physiology
Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Comparative study on the nutritive value of improved varieties of mulberry under West Bengal and Mysore system of cultivation.
Project Period :1969-1970
Objectives :To study the nutritive value of improved varieties of mulberry under West Bengal and Mysore of cultivation.
Results/Recommendations :Among local, S799, S1472, S1487 and C1061, local has been found to be the highest yielder under Bengal system of cultivation. No definite conclusion could be made about the chemical composition of mulberry leaf.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of storage on the nutritive value of leaves at 0, 12, 24, 36 and 60 hours preservation in both top and bottom leaves.
Personnel :N.A.
Project Period :1963-1970
Objectives :To study the nutritive value of preserved mulberry leaf during different durations.
Results/Recommendations :On storage moisture and crude protein contents register a gradual decline while the starch and consequently total carbohydrates record a decline with increase in the duration of storage. Top and bottom leaves show the similar trend of increase and decrease. Season has a definite effect on the chemical composition of mulberry leaf.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Comparative study on the nutritive value of leaves with regard to the position of the branches, primary and secondary stem leaves.
Personnel :
Project Period :1964-1965
Objectives :To study the nutritive value of leaves based on the position o the stem and branches.
Results/Recommendations :The leaves on the main stem are slightly superior to those on the secondary branches in respect of crude protein, total sugar and starch content. In respect of fibre and mineral content no difference was observed.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Comparative study on the nutritive value of mulberry leaves harvested at different times during the day.
Personnel :
Project Period :1964-1965
Objectives :To study the nutritive value of leaves based on the time of harvest.
Results/Recommendations :Crude protein content is highest in the morning and decreases by afternoon. True protein content also follows the similar trend. Sugar content is maximum in the noon. Starch content is maximum in the after noon.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Investigations on the nutritive value of leaves in respect of their position and growth of plants.
Personnel :
Project Period :1964-1965
Objectives :To understand the nutritive value of leaves in respect of their position and growth period.
Results/Recommendations :As we go downward from the top of a mulberry plant moisture, protein and starch content of leaves decreases. Fibre content increases with maturity. Sugar content remains fairly constant.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Comparative study on the nutritive value of leaves of different foreign and local varieties of leaves.
Personnel :
Project Period :1964-1969
Objectives :To investigate the nutritive value of exotic and indigenous mulberry varieties.
Results/Recommendations :Comparison was made among Japanese, Chinese, European and local varieties of mulberry. Local varieties are in no way inferior to foreign varieties. However, Mandalaya and S1, a local select is having the highest protein content.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Comparative study on the nutritive value of leaves harvested by plucking and pruning method.
Personnel :
Project Period :1965-1969
Objectives :To investigate the nutritive value of leaves based on plucking and pruning.
Results/Recommendations :Leaves harvested by pruning recorded slightly higher values as compared to leaves harvested by plucking in respect of crude protein, total sugar and reducing sugar. But actually, there are no major differences except for slightly rapid loss of moisture in the plucked leaves.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Estimation of protein in mulberry leaves by ion binding method.
Personnel :Roy D, Gupta BK, Chinya P K
Project Period :1972-1973
Objectives :To standardize the usage of dyes in ion binding method for protein estimation in mulberry leaf.
Results/Recommendations :Safronine and Orange-G dye can be used in the ion binding method of protein estimation of mulberry leaf.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on fractionation of mulberry leaf protein
Personnel :Roy D, Gupta BK, Chinya PK
Project Period :1973-1974
Objectives :To study the feasibility of usage of different solvents in protein estimation.
Results/Recommendations :Four solvents water, salt solution, alcohol, sodium hydroxide (pH-12.5) were used. Residual protein is maximum, followed by water soluble and then by alcohol soluble protein fraction. The amount of salt and alkali soluble protein fraction is very small. With the help of regression equation, we can assess any protein fraction from the amount of total protein in mulberry leaf.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Experiments on rate of photosynthesis on twelve varieties of mulberry.
Personnel : Chakraborty S
Project Period :1974-1975
Objectives :To study the rate of photosynthesis in different mulberry varieties.
Results/Recommendations :Photosynthetic rate was highest in CSRS II and least in Kosen variety.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the nutritional composition of mulberry leaves in fresh and dry condition.
Personnel : Dutta RN
Project Period :1985-1986
Objectives :To study the nutritional composition of mulberry leaves in fresh and dry condition.
Results/Recommendations :Nutritional composition of mulberry leaves remain the same after drying it quickly at 70°C. So, nutritional assessment in green leaves can be predicted after analysis it in dry condition.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on nutritional composition of mulberry leaves in different position (from top to 10 numbered position in a branch).
Personnel :Chinya PK
Project Period :1986-1987
Objectives :To estimate the nutritional status of mulberry leaves based on the position on the shoot.
Results/Recommendations :Four varieties were taken into consideration (Local, S1, S799, Kanva-2). Protein, content of leaves decreases as we go downwards from top to bottom. However, there is an increasing trend in fibre and mineral content of leaves.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the chemical composition of normal and tukra infected mulberry leaves (var. S1).
Personnel :Chinya PK
Project Period :1987-1988
Objectives :To investigate the chemical composition of normal and tukra infected mulberry leaves.
Results/Recommendations :Tukra infection enhanced almost all the parameters like protein, total sugar and reducing sugar of mulberry leaves except starch and total carbohydrate.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on analysis of thrips infested leaves.
Personnel :Chinya PK
Project Period :1988-1989
Objectives :To investigate the nutritional status of thrips infested mulberry leaves.
Results/Recommendations :Heavy thrips infested mulberry leaves are inferior to less infested leaves in quality when moisture, protein and carbohydrate are taken into account.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on nutritional studies in mulberry.
Personnel : Das C, Ghosh JK, Chattopadhyay S
Funding Source :CSB, Bangalore
Project Period :1990-1995
Objectives :To screen mulberry germplasm for high nutritional status in view of utilization in future breeding programmes.
Results/Recommendations :
· The nutritional status in 10 high yielding mulberry varieties (S1, S799, S1635, S1708, C1726, C1729, C1730, C1733, C763 and C776) was considered on the basis of maximum leaf yield. Variety S1 possesses higher chlorophyll and protein content in all seasons. But in other varieties protein content was more during October. Maximum cocoon yield was obtained in C1730 and S1635 with bivoltine hybrid during favourable season and C1733 with BV x BV hybrid during unfavourable season.
· 72 indigenous and 90 exotic varieties were screened physio-biochemically with special reference to photosynthetic efficiency.
· For selection of germplasm varieties all the indigenous and exotic genotypes were subjected to selection indexing. It has been observed Sultanpur, MS-1, MS-5, Takada and Tollygunz showed superiority among indigenous varieties where Akaji, Ichinose, Sukakuchi, China Black A and Egypt Cairo are best among exotic varieties in terms of photosynthetic efficiency.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Mulberry Pathology
Project No.:CSB
Project Title :Studies on Maconellicoccus hirsutus.
Project Period :1963-1969
Personnel :
Objectives :To study the biology and effect of parasitization on mulberry leaf quality.
Results/Recommendations :Percent hatching of mealy bug eggs was maximum (96.8%) during June. Feeding of tukra infected leaves has adverse effect in relation to effective rate of rearing, cocoon weight, shell weight, shell ratio, except the duration of larval period which is found to be the same.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Project Title :Studies on tukra infection in different varieties of mulberry.
Project Period :1963-1969
Personnel :
Objectives :To study the rate ad extent of tukra infection in indigenous and exotic varieties of mulberry.
Results/Recommendations :Mulberry varieties like CSRS-I, CSRS-II, local and Moretiana were more susceptible to tukra infection than the Japanese and Chinese varieties of mulberry.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Preliminary studies on the effect of feeding silkworm larvae with mildew affected leaves on cocoon crop production.
Personnel :Saha Kundu AK, Chakravarty SK, Ghosh AK, Chandra AK
Project Period :1968-82
Objectives :To study the effect of feeding silkworm larvae with mildew affected leaves on cocoon crop production.
Results/Recommendations :The ERR and cocoon characters were adversely affected when silkworms were fed with mildew affected mulberry leaves.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Project Title :Control of tukra disease of mulberry through spraying of Savol.
Project Period :1970-1974
Personnel :Datta RK, Biswas SN, Mukherjee PK, Haque S
Objectives :To develop control measures for control of tukra disease in mulberry.
Results/Recommendations :Very little difference was marked between control and the treated plots.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Amino acid composition of mulberry leaves infected by tukra and mildew diseases.
Personnel :Roy D, Gupta BK, Chinya PK
Project Period :1973-1974
Objectives :To understand the nutritional status of tukra and mildew diseased leaf.
Results/Recommendations :Most of the essential amino acids are present in the samples except Tryptophan. The amount of amino acids in tukra infected leaves are higher than that of mildew infected leaves.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the incidence of mulberry diseases and extent of damage - Survey of mulberry diseases in farmers field.
Personnel : Mondal SK, Biswas S, Teotia RS, Elangovan C, Qadri SMH, Prateesh Kumar PM, Gangwar SK
Project Period :1990-1996
Objectives :To study the incidence and intensity of major mulberry diseases and assessment of leaf and cocoon yield loss.
Results/Recommendations : Incidence pattern of major mulberry diseases in West Bengal was studied through survey of mulberry fields in Malda, Murshidabad and Birbhum districts during commercial crop seasons. Malda identified as the hot spot for powdery mildew, leaf spot, leaf rust and bacterial blight. Maximum incidence of powdery mildew was found in November-December while bacterial bight during July-August leaf rust was more during February-March Leaf spot start soon after onset of monsoon and continued upto October-November. The powdery mildew and leaf rust diseases appeared during November with the peak in January-February for leaf rust and powdery mildew during December-January.
Mulberry leaf yield loss in the farmer's mulberry field was maximum due to leaf spot (46.8%), followed by powdery mildew (20.4%) and leaf rust (17.3%). Leaf yield loss due to bacterial blight was low (6.4%). Rearing with diseased leaves adversely affected silkworm crop. Reduction in cocoon yield upto 64.6% and 55.6% was found when leaf exhibited maximum intensities of leaf spot and powdery mildew diseases respectively. The economic loss was calculated to the tune of 61.3% an 64.4% of the diseases, which was estimated to be Rs.13,041 and Rs.17,291 per hectare.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the incidence of mulberry diseases and extent of damage - Studies on extent of damage due to major mulberry diseases.
Personnel : Mondal SK, Biswas S, Teotia RS
Funding Source :CSB, Bangalore
Project Period :1990-1995
Objectives :To investigate the damage extent loss due to mulberry diseases. Results/Recommendations :
· Leaf yield loss in farmers’ field was found maximum due to Powdery mildew followed by leaf spot and leaf rust. Yield loss due to bacterial blight was low even negligible in some cases.
· A marked reduction was found in SR% and all other qualitative and quantitative characters due to feeding of silkworms with disease affected leaves. Also the qualitative characters of cocoon were adversely affected with the increase in Percent Disease Index (PDI).
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Control of mulberry diseases - Screening of mulberry GPB for resistance against different diseases.
Personnel : Mondal SK, Biswas S, Teotia RS, Gangwar SK, Pratheesh Kumar PM, Elangovan C
Project Period :1990-1996
Objectives :To control mulberry diseases by different methods and development of a disease management system.
Results/Recommendations :
· Screening of 162 germplasm accessions (90 exotic and 72 indigenous) against different foliar diseases revealed that the accessions viz., Ankara, Goshoerami, Ohshima and Kokuso were resistance to leaf spot, Ankara, Kosen, Morus laevigata and Thailand lobed to powdery mildew and Ber-A, Kattenco, Kokuso, Morus laevigata, Lemoncina, Moretiana, Morus tiliaefolia and Morus serpentina to leaf rust. Remaining accessions were susceptible to all these diseases.
· Screening of 10 HYV mulberry varieties (S, S799, S1635, C763, C776, C1726, C1729, C1730, TR14 and TR10) against foliar mulberry diseases showed that none of the varieties was immune/resistance to any of the diseases except S799, which exhibited resistance to powdery mildew.
· Fungicidal control of mulberry diseases study revealed that out of 8 fungicides, viz., Carbendazim (0.075%), Triadimefon (0.5%), Mancozeb (0.2%), Copper-oxy-chloride (0.2%) and Biteranol (0.05%), Carbendazim (0.075%) was most effective for controlling leaf spot disease and powdery mildew. For leaf rust, 0.2% Copper-oxychloride was most effective in reducing the disease incidence to an extent of 81.4%.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Control of mulberry diseases-Screening of high yielding mulberry varieties against different diseases.
Personnel : Mondal SK, Biswas S, Teotia RS, Elangovan C, Pratheesh Kumar PM, Gangwar SK
Project Period :1990-1995
Objectives :To screen high yielding mulberry varieties against different diseases for resistance.
Results/Recommendations :Ten high yielding varieties viz., C763, C776, C1726, C1729, C1730, S799, S1635, S1, TR4 and TR10 developed at CSR&TI, Berhampore were screened against powdery mildew, leaf spot and leaf rust diseases. Varieties S799 and C1729 were found resistant to powdery mildew and leaf spot and S1635 and C1730 to leaf rust.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Control of mulberry diseases-Fungicidal control of mulberry diseases.
Personnel : Mondal SK, Biswas S, Teotia RS, Elangovan C, Pratheesh Kumar PM, Gangwar SK
Project Period :1990-1995
Objectives :To screen different fungicides for disease management.
Results/Recommendations :Spraying of Blitox (0.2%) twice at 10 days interval found effective to control leaf rust with PDC of 82%. Two sprays of Bavistin at 0.075% (a.i.) controlled leaf spot effectively (PDC 35%). At 0.15% (a.i.) single spray of Bavistin was also found to control powdery mildew upto 70%. Indofil M-45 effectively controlled the Sooty moulds upto 70%. In view of the multitargeted approach Bavistin is recommended for the control of powdery mildew and leaf spot which is non-phytotoxic and also has got growth promoting action on host plant.
Though no harmful effect on silkworm is reported, as a precautionary measure a safe period of 8 days is recommended.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Control of mulberry diseases-Effect of host nutrition on the development of mulberry diseases.
Personnel : Mondal SK, Biswas S, Teotia RS, Elangovan C, Pratheesh Kumar PM, Gangwar SK
Project Period :1990-1995
Objectives :To study the correlations for nutrition level of disease incidence in mulberry.
Results/Recommendations :Foliar application of NK (0.5%) and tracel at 2% (a.i.) followed by NP (0.1 to 0.5% a.i.) twice at three weeks interval minimized leaf rust and leaf spot disease by 78% and 84% respectively.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Control of mulberry diseases - Cultural control of mulberry diseases.
Personnel : Mondal SK, Biswas S, Teotia RS, Elangovan C, Pratheesh Kumar PM, Gangwar SK
Project Period :1990-1995
Objectives :To control mulberry disease through cultural operations.
Results/Recommendations :Plants pruned during November showed less disease incidence (PDI-14.17%) whereas those pruned during October showed highest incidence (PDI-59.81) irrespective of type of pruning.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Field evaluation of acaciasides for the control of mulberry root knot and other diseases.
Personnel : Sukul NC, Chattopadhyay S, Sarkar J, Sinha Babu SP
Project Period :2000-2003
Objectives :
· To establish the efficacy of acaciasides a safe pesticide by field trials.
· To develop a new method of mulberry disease control by plant product.
Results/Recommendations :
· Aqueous 0.2% (w/v) acaciasides (160 mg/plant) was applied twice on 0.2 ha each of selected fields, at 30 and 20 days prior to the brushing of respective crops. The root gall index, rhizospheric nematode population (at each 10 cm depth), major foliar disease severities, insect pest incidences, morpho-biochemical attributes and leaf yield were recorded one month after the first spray. To ascertain the residual toxicity at silkworm level, bioassay was conducted with acaciasides treated leaves and time course of biodegradability of the said bio-product was probed spectophotometrically.
· The treatment consistently reduced Meloidogyne incognita infection. Overall, gall reduction was 43% and inhibition of rhizospheric nematode population was 71% of their respective controls. The field study suggests that the acaciasides may be exploited commercially for the control of Meloidogyne incognita and Maconellicoccus hirsutus induced mulberry diseases.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title : Identification of commercial hybrids.
Project Period : 1960-1995
Personnel: Krishnaswamy S, Jolly MS, Subba Rao S, Yusuf MR, Grover SP, Sengupta K, Datta RK, Das BC, Biswas SN, Samaddar S, Samsuddin M, Kare TC, Singh TN, Joyeeta Sen, Ghosh B, Subba Rao G, Sen SK, Sengupta AK, Roy GC, Das SK, Rao PRT, Chattopadhyay S, Moorthy SM
Objectives :To identify region and season specific hybrids.
Results/Recommendations :Six multivoltine hybrids were identified during 1960-74. During the period 1983-86 six multivoltine hybrids were identified of which N x G was released to the field. During 1987-95 6 multi x multi hybrids and 8 multi x bi-hybrids were identified of which NxNB18 and has already gone to field and CB5 x P5 and N x YB are under consideration by the Race Authorisation Committee while N x (NB18 x P5) has been authorised. Among bivoltine hybrids KPGB x P5 has already gone to field while NB18 x P5 has been authorised recently.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Improvement of silkworm breeds by conventional breeding techniques.
Objectives :Improvement of multivoltine silkworm breeds.
Project Period :1965-1995
Personnel :Krishnaswamy S, Jolly MS, Sengupta K, Datta RK, Biswas SN, Ganguly AK, Samaddar S, Dev B, Das BC, Ahsan MM, Mistri PK, Das C, Mitra P, Sen SK, Samsuddin M, Kare TC, Singh TN, Sen J, Ghosh B, Misra PN, Jaiswal KP, Das SK, Das BD, Singh T, Sarkar J, Singh NI, Roy GC, Sinha SS, Pavankumar T, Sengupta AK, Saratchandra B
Results/Recommendations :
· During the period 1965 to 1975 about 60 multivoltine lines were evolved through various conventional breeding techniques. During 1976 to 1986 another 28 multivoltine lines were evolved of which race, 'G' was released to the field. During 1987-90 OS616 was released. During 1990-95 four more breeds M1A, M6, M2B and M9A were fixed.
· YB and BG (W) have been evolved as bivoltine breeds by involving multivoltine breeds for rearing during adverse seed crop seasons as parents.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Silkworm Breeding and Genetics
Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of multiple crosses on hybrid production.
Personnel : Sengupta K, Datta RK, Samaddar S, Biswas SN
Project Period :1971-1974
Objectives :To study the effect of multiple crosses on hybrid production.
Results/Recommendations : Nistari sperms have been found to have larger power to resist displacement. There is breed difference in the competitiveness of sperms.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Stock culture maintenance.
Personnel : Sengupta K, Musafi JC
Project Period :1973-1977
Objectives :To study the multivoltine race performance under different environmental conditions.
Results/Recommendations :Four multivoltine races were maintained viz., D3c, D14b, MBDIV and MBDV. All the lots were affected with high temperature and high humidity during summer, while they recouped and gave better result in winter season.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Evolution of breeds by mutation breeding technique.
Objectives : To develop beneficial mutants.
Project Period : 1975-1995
Personnel: Sengupta K, Datta RK, Samaddar S, Gongopadhyay A, Roy GC, Das SK, Paul DC, Sumsuddin M, Ahsan MM, Sen SK, Gupta SK, Rao PRT, Moorthy SM
Results/Recommendations :Eggs, larvae, pupae of B. mori were treated with physical mutagens such as X-rays, γ-rays or chemical mutagens like EMS. The lines thus derived were then hybridized with other breeds and obtained four more breeds of which CB5 was used in preparation of hybrid with P5 which is now under consideration of the Race Authorisation Committee. Similarly, three bivoltine lines were also evolved and maintained for further use.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Evolution of sex-limited strains.
Project Period : 1976-1977
Personnel: Sengupta K, Datta RK, Biswas SN, Samaddar S, Samsuddin M, Kare TS, Singh TN, Joyeeta Sen
Objectives : To study phenotypic identification of sex.
Results/Recommendations :Twelve sex-limited lines were evolved.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on some biochemical parameters of silkworm varieties.
Project Period : 1976-1982
Personnel : Datta RK, Roy GC, Pramanik HK, Sumsuddin M, Chatterjee SN, Das C, Ahsan MM, Samaddar S, Mitra P, Das SK, Chinya PK
Objectives : Biochemical characterisation of silkworm varieties
Results/Recommendations :Electrophoretic banding patterns differ in relation to sex and developmental stages. Variability in the band pattern in haemolymph proteins and isozyme levels were observed in different breeds, hybrids and mutant lines.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on silkworm race improvement.
Personnel : Sen SK, Sengupta AK, Das SK, Roy GC, Rao PRT, Ghosh B, Gupta SK, Moorthy SM, Patnaik S
Project Period :1990-2000
Objectives :
· To evolve superior multivoltine breeds with high survival and better economic traits.
· To evolve superior breeds with high survival and improved technological traits.
· To evolve superior hybrids with better quantitative and qualitative traits.
Results/Recommendations :
· Developed three promising multivoltine breeds viz., M12 (W), M6M81, M6DP (C). The cocoon yield of these breeds ranged between 30-34 kg/100dfls during unfavourable (April-September) and 40 kg during favourable seasons (October-March).
· Developed three hardy breeds viz., YB, BG (W) and SK7. The pupation (%) of these hybrids ranged between 60-70% with cocoon yield of 32-36kg/100 dfls and shell% of 17-18.25 during adverse seed crop seasons.
· Developed five bivoltine breeds [SK3, SK4, O3, O4, D6 (P)] with better qualitative and quantitative traits. The cocoon yield ranged between 40-52 kg/100 dfls during favourable seasons. The shell% ranged between 18.5-21.0 and filament length between 833-1175 m.
· Identified one bivoltine foundation cross (SK6 x SK7) for rearing during adverse seed crop (September-October) of autumn commercial crop as male parent for preparing multi x bi hybrid eggs. The cocoon yield of this foundation cross is 48 kg/100 dfls with 88.5% survival.
· Identified two multi x multi hybrids for rearing during unfavorable seasons viz., N x M12 (W) and 12 (W) x M6M81. The cocoon yield ranged between 36-41 kg with shell % of 15.0-15.7.
· Identified four multi x bi hybrids for favourable seasons viz., N x YB, N x NB18 x P5), M6DP (C) x (SK6 x SK7) and M12 (W) x KPG-B. The cocoon yield was ranged between 55-60 kg/100 dfls with shell % of 16.5-18.25 and renditta of 8-9.0.
· N x M12 (W) - multi x multi hybrid was authorized by CSB for eastern India for rearing during unfavorable seasons (April-September).
· M12 (W) x M6M81 - MV x MV hybrid was also recommended for rearing during unfavorable seasons through Provincial Race Authorization Programme.
· N x YB - multi x Bi hybrid was authorized by CSB for eastern India for rearing during favourable seasons (October-March).
· N x (NB18 x P5) - MV x BV hybrid was authorized though All India Coordinated Experiment for autumn (October-November) season of eastern India.
· Two multi x bi hybrids viz., M12 (W) x KPG-B and M6DP (C) x (SK6 x SK7) was also recommended for rearing during spring (February-March) and autumn (November-December) respectively through Provincial Race Authorization programme.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Evaluation of bivoltine breeds for their suitability for stress conditions.
Project Period :1991-1995
Personnel: Subba Rao G, Sengupta K, Pavankumar T, Sinha SS, Saratchandra B, Sen SK, Das SK, Roy GC, Gupta SK, Patnaik S, Rao PRT, Ghosh B, Moorthy SM
Objectives :To evaluate stress tolerant silkworm races.
Results/Recommendations : Three bivoltine breeds viz., BHR-1, BHR-2 and BHR-3 were found to survive at 36°C and 90% RH. Further study on their utilization is under progress. Similarly YP and YP (C) were identified as breeding material for temperature tolerance.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Utilization of syngenic lines for improvement of shell weight and survival in silkworm Bombyx mori L.
Personnel :Gautam Kr Chattopadhyay, Abhijit Sengupta, Anil Kr Verma
Funding Source :CSB, Bangalore
Project Period :1998-2004
Objectives :
· Minimization of heterogenity in gene pool of silkworm by development of isozyme based syngenic line for improvement of qualitative and quantitative improvement.
· Use of syngenic line to develop a method to introgress a trait dealing with multiple genes as a congenic breed or near isogenic breed for high cocoon shell weight multivoltine and high survival bivoltine breed.
· Use of congenic breeds to identify native protein as biochemical markers for introgressed trait.
Results/Recommendations :Three each high cocoon shell weight multivoltine and high survival bivoltine congenic breeds were developed. Of which two high cocoon shell weight multivoltine breed and two high survival bivoltine congenic breeds were used in hybridization for commercial exploitation. These hybrids are recommended for National Race Authorization programme. Beside two apparent native proteins of a possessors of alpha specific Esterase were identified as biochemical markers for high cocoon shell weight and high survival.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Introgression of higher shell weight survival character(s)/through the development of multivoltine and bivoltine congenic breeds and identification of biochemical markers in silkworm Bombyx mori L.
Personnel : Gautam Kr Chattopadhyay, Verma AK, Sengupta AK
Funding Source :CSIR, New Delhi
Project Period :2002-2005
Objectives :
· Development of Nistari (a tolerant strain of silkworm at West Bengal climatic situation) based on high cocoon shell weight congenic breed.
· Development of high survival bivoltine congenic breed through introgression of survival character of Nistari.
· Identification of biochemical marker for introgressed trait viz., high cocoon shell weight, high survival.
Results/Recommendations :
· One high cocoon shell weight multivoltine RBL3 Nistari line was developed and development of congenic breed is under progress.
· One high cocoon shell weight multivoltine RBL2 Nistari with flesh colour line was developed.
· Two high survival bivoltine congenic breed were developed one as a white colour and other as a flesh colour.
· Two biochemical protein marker as a possessor of alpha esterase were identified those are similar to the earlier findings.
· Two high cocoon shell weight multivoltine BL lines were developed viz., Nistari RBL3 + N+P BL3C, Nistari RBL2 as NP RBL2F.
· Two high survival congenic breeds as D6P con + C, D6P con F. These breeds are in pipeline for testing at farm and farmers level.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Rearing Technology
Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of different varieties of mulberry on multivoltine cocoon crop production.
Project Period :1964-68
Objectives :Effect of different varietal variance on multivoltine cocoon crop performance.
Results/Recommendations :Among 5 major mulberry varieties (Kokuso, Kosen, Mandalaya, Ichinose and Control) under study there was no marked difference in cocoon crop production. However, both Kosen and local varieties gave somewhat better results.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of feeding of the leaves from the plots treated with different doses of nitrogen.
Project Period :1966-1971
Objectives :To study the rearing performance of silkworms using mulberry leaf raised using different levels of nitrogen as a soil application.
Results/Recommendations :Protein concentration of the leaves increased with increase in the nitrogen but the corresponding increase in the cocoon yield was not obtained. High doses of nitrogen at least beyond 300 kgs had the effect more in terms of increase in leaf yield rather than improvement in cocoon character.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title : Effect of frequency of feeding on cocoon crop production
Project Period :1966-1969
Objectives :To study the feasibility study of frequency of feeding on cocoon crop production.
Results/Recommendations: It can be concluded that 5 feedings and 6 feedings daily are alike and both are significantly better than 2 and 3 feedings daily. The results of 4 feedings were not consistent and therefore, it can not be said definitely whether 5 and 6 feeding are better than 4 feedings or 3 feedings were inferior to 4 feedings.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title : Seasonal influence on cocoon crop production.
Personnel :
Project Period :1966-1970
Objectives :To study the seasonal influence on cocoon crop.
Results/Recommendations: Results indicate that in summer season (April-May) the out-turn is not very much affected but the cocoon quality is poor. In rainy season (July-August) the out-turn is very much affected because of high temperature and high humidity. October to March is the best time for cocoon production.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Nutritional studies on enriching mulberry leaf-feed for vigorous growth of worms and increased cocoon crop production.
Project Period :1968-1974
Objectives :To study the effect of different fortificants on survival and cocoon characters.
Results/Recommendations: It was observed that some of the chemicals like glucose, glycine, ascorbic acid and folic acid showed betterment of cocoon wt., shell wt., ERR and SR%, over control (normal leaf).
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the modification of mulberry leaves through artificial treatments for easier assimilation and better utilization by the larvae.
Project Period :1968-1970
Objectives :To study the effect of steam cooked mulberry leaves on silkworm rearing.
Results/Recommendations: Steam cooked leaves for one, two and three minutes did not show any significant improvement in silkworm rearing.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Determination of suitable time of harvest following pruning as related to leaf quality suitable for feeding
Project Period :1969-1970
Objectives :To understand the age based suitability of mulberry leaves for silkworm rearing.
Results/Recommendations: It was observed that one and two months old leaves showed better results than three months old leaves.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore, WestBengal.
Project Title :Feeding experiment with the leaves harvested at different hours of the day and its consequent effect on cocoon quality and cocoon crop production.
Project Period :1970-1972
Objectives :To understand the feeding effect of leaves harvested at different hours on cocoon characters.
Results/Recommendations :Three treatments of leaf harvest was done. The treatments were 8 am, 12.00 noon and 4 pm. Better performance was observed in the lots fed with leaf collected in the afternoon over those fed with leaf collected in the morning and at noon.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore.
Title of the Project :Experiment on mulberry leaves with reference to varieties, spacing and manuring and their effect on cocoon quality and cocoon crop production.
Project Period :1971-1974
Objectives :To study the effect of mulberry leaves raised under different treatments on cocoon crop.
Results/Recommendations :Best performance was showed by Mandalaya followed by S15 and local in descending order of merit in respect of all the characters except shell ratio where S15 performed better than Mandalaya. Effect of N2 on cocoon quality and crop production had also been apparent. There had been no marked difference among the treatments due to spacing.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of exclusive and combined feeding of Osage orange and mulberry leaves on the growth and development of silkworm, Bombyx mori L.
Project Period :1971-1972
Objectives :To study the effect of osage orange and mulberry leaves on survival and cocoon characters.
Results/Recommendations: All the worms died before spinning in case of feeding the larvae with osage orange leaf alone. Treatment with mulberry leaf showed the best performance followed by alternate feeding with mulberry leaf and osage orange leaf in respect of all the characters.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore, WestBengal.
Project Title :Feeding experiment with combination of different vitamins, sugar, amino acids, salt mixtures etc. to study their effects on the vigorous growth of silkworm and increase in cocoon crop production.
Personnel : Sengupta K, Musafi JC
Project Period :1973-1982
Objectives :To study the effect of fortificants on silkworm cocoon crop production.
Results/Recommendations: Ascorbic acid, glycine and folic acid combination was found to improve the larval and cocoon characters of silkworm.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Feeding experiment with leaves treated and disinfected with different disinfectants having different concentrations.
Personnel : Sengupta K, Musafi JC
Project Period :1974-1981
Objectives :To feed disinfected leaves on cocoon crop production.
Results/Recommendations : Treatment with Dettol (2 cc in 1 litre of water) solution exhibited better result with regard to SR% over other treatments and control.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore West Bengal
Project Title :Efcorlin feeding experiment i.e., feeding the worms with leaves treated with Efcorlin a hormonal drug (BDH).
Personnel : Sengupta K, Musafi JC
Project Period :1974-1976
Objectives :To study the effect of Efcorlin a hormonal drug on silkworm.
Results/Recommendations :Efcorlin treatment 1 cc and 1.5 cc per feeding per day in 4th and 5th instar given significantly better result in ERR No., ERR wt., larval wt. cocoon wt., shell wt., and SR%.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of topical application of juvenile hormone extract on cocoon quality, layings and hatchability.
Personnel :Sengupta K, Chakraborty N
Project Period :1976-1977
Objectives :To study the effect of juvenile hormone on hatchability and cocoon quality.
Results/Recommendations :It was observed that all the treatments failed to yield any significant result.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of juvenile hormone analogue on silkworm (Nistari).
Personnel : Sengupta K, Chakraborty N
Project Period :1977-1985
Objectives :To study the effect of juvenile hormone analogue n silkworm rearing performance.
Results/Recommendations :Although application of mania and manta exhibited some improvement in rearing performances, but cost benefit ratio found to be not economic.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of ecdysterone on the silk yield in the local race (Nistari).
Personnel : Sengupta K, Biman Deb, Chakraborty NG
Project Period :1978-1981
Objectives :
Results/Recommendations : The application of ecdysterone on the silkworm larvae at 5th instar indicated that the wt. of 10 mature larvae, ERR, cocoon wt. and absolute silk content seen to be higher than the control when 5th stage larvae were treated with 10 and 20 ppm of ecdysterone.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of temperature and humidity in different seasons on egg laying capacity of the races D14b, D3C, MBDIV, MBDV and Nistari.
Personnel : Sengupta K, Biman Deb, Roy AK
Project Period :1979-1981
Objectives :To study the temperature and humidity effect during different seasons on egg laying capacity of different races of silkworm.
Results/Recommendations: The effect of temperature and humidity on the egg laying of silkworm indicated a progressive increase in the egg laying in different breeds from 28.5°C and 87% humidity to 22.5°C and 72.5% humidity.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the performance of bivoltine rearing with leaves of different plantation types.
Personnel :Das BC, Chakraborty NG
Project Period :1981-1982
Objectives :To study the effect of leaves raised from different plantation types on rearing performance of silkworm.
Results/Recommendations :It was observed that the worms fed with leaves of low bush plantation gave better result in respect of all economic characters than that of high bush plantation.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the optimum quantity of leaves required for rearing multivoltine silkworm breed, Nistari.
Personnel : Chakraborty NG, Saha PK
Project Period :1981-1983
Objectives :To study the effect of optimum levels of feed on rearing of Nistari race.
Results/Recommendations :When the silkworms were fed with mulberry leaves 10% higher and 10% lower than control no significant improvement was recorded.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the effect of feeding mulberry leaves collected from the plot treated with different nitrogenous fertilizers with Sufala on the rearing performance of silkworm.
Personnel : Mukherjee PK, Chakraborty NG, Roy AK
Project Period :1982-1983
Objectives :To study the effect of feeding leaves harvested from Sufala used gardens on rearing performance.
Results/Recommendations :It was observed that there was no marked differences in the characters like cocoon wt., shell wt., SR% among the 10 treatments of different doses of nitrogenous fertilizer.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the effect of different atmospheric temperature and humidity at the time of spinning on egg laying and hatching performance of multivoltine silkworm race, Nistari.
Personnel : Mukherjee PK, Roy AK, Chakraborty NG
Project Period :1982-1983
Objectives :To understand the influence of atmospheric temperature and humidity at the time of spring on egg and rearing parameters.
Results/Recommendations: It was observed that fecundity is not affected much by the increased temperature but hatchability % is hampered much in higher temperature and humidity during spinning i.e., 71.1% in 31.5°C temperature and 76.5% RH, 81.3% in 30.5°C temperature and 82.7% RH, 85% in 34.1°C temperature and 69.5% RH. This study thus cautions that higher temperature and humidity must be avoided at the spinning time for having good hatchability in eggs.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the co-relation of pupal weight on fecundity and hatchability in multivoltine silkworm race, Nistari.
Personnel : Mukherjee PK, Roy AK, Chakraborty NG
Project Period :1982-1983
Objectives :To study the effect of pupal weight on fecundity and hatchability in multivoltine silkworm race.
Results/Recommendations :It was observed that in the multivoltine race, Nistari, hatchability is fairly dependent upon both female and male pupal and female weight has got a significant influence on egg production.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the effect of egg richness on the rearing performance of multivoltine silkworm, Nistari race.
Personnel :Mukherjee PK, Roy AK, Chakraborty NG
Project Period :1982-1983
Objectives :To study the effect of egg richness on rearing performance.
Results/Recommendations: It was observed that egg richness had no influence on the rearing performance of silkworm, i.e., on economic characters.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Feasibility studies on bivoltine silkworm rearing in tropical climate of West Bengal.
Personnel :Mathur SK, Roy AK
Project Period :1983-1987
Objectives :To study the feasibility of bivoltine rearing in West Bengal conditions.
Results/Recommendations : It was found that in the plains of West Bengal bivoltine silkworm rearing was found suitable only during the period from November to March when ERR ranged from 85% to 87% and yield/100 dfls ranged from 74-82 kgs.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Standardization of rearing technique with reference to spacing and nutritional level.
Personnel :Mathur SK, Roy AK
Project Period :1983-1984
Objectives :To develop a package of practices for silkworm rearing.
Results/Recommendations :It was observed that for 20,000 worms 400 kgs of leaves were required and the spacing for 1st instar-0.2-0.8 m2, 2nd instar-1.0-2.0 m2, 3rd instar-2.0-4.5 m2, 4th instar-5.0-10.0 m2, and 5th instar-10.0-20.0 m2 are required for Nistari under tropical climate of West Bengal.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on optimum time for mounting multivoltine larvae on mountages under tropical conditions of West Bengal.
Personnel :Mathur SK, Roy AK
Project Period :1983-1985
Objectives :To identify the optimum time for mounting larvae on mountages.
Results/Recommendations :It was observed that if all the worms were mounted on chandrike after 8 to 12 hours from first appearance of ripening it results in production of normal cocoons without any detrimental effect on yield and quality of cocoons.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on normal growth rate of multivoltine and bivoltine silkworms in tropical climate of West Bengal.
Personnel :Mathur SK, Roy AK
Project Period :1983-1985
Objectives :To study the growth and development of silkworm in tropical climatic regions.
Results/Recommendations: Growth studies under tropical climate of West Bengal showed that a full grown multivoltine larva increased in weight about 8,000 times and bivoltine 9,000 times than that of newly hatched one. Body volume increased around 2,000 times in Multivoltine and 3,000 times in Bivoltine from newly hatched one. Body length increased 23 times in multivoltine and 26 times in bivoltine and body width increased 16 times in multivoltine and 20 times in bivoltine from newly hatched larva. Ratio of head and abdomen in terms of length in multivoltine larvae increases from 1:4 to 1:11 and in Bivoltine from 1:4 to 1:12 from newly hatched larva to newly moulted larva in 5th stage.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Standardisation of rearing techniques of silkworm (Bombyx mori) during unfavorable season (April-October) in the plains of West Bengal.
Personnel : Mathur SK, Roy AK, Pramanik DR
Project Period :1984-1986
Objectives :To standardize the rearing techniques of silkworms during unfavourable seasons in West Bengal plains.
Results/Recommendations :Studies on rearing techniques for different commercial crops in the tropical plains of West Bengal have indicated that 4 feeds/day during chawki rearing upto 2nd stage followed by shoot feeding has shown the best performance with regard to qualitative and quantitative characters.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies to find out retention of eggs in the ovary in different seasons in tropical plains of West Bengal.
Personnel :Mathur SK, Roy AK, Pramanik DR
Project Period :1984-1985
Objectives :To study the egg retention after oviposition in different seasons in tropical plains of West Bengal.
Results/Recommendations :It was observed that a minimum retention (0.37%) was observed in November and December while retention was found maximum (6.51%) during August-September. There was a high positive co-relation between retention of eggs and R.H. and relative co-relation with temperature.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on growth rate of silk gland of multivoltines under tropical conditions of West Bengal.
Personnel :Mathur SK, Roy AK, Pramanik DR
Project Period :1985-1986
Objectives :To study silk gland growth rate in multivoltines.
Results/Recommendations : It was observed that maximum length and weight of the silk gland as well as silk content were recorded during November (Agrahayani crop). It may be due to congenial climatic conditions, prolonged larval period and maximum feeding during the season.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title: Evaluation for digestion of different mulberry varieties by silkworms.
Personnel : Mathur SK, Roy AK, Pramanik DR
Project Period :1986-1987
Objectives :To study the digestion and related parameters in silkworms using different mulberry varieties.
Results/Recommendations: It was observed that approximate digestibility (A.D.) in general was higher in bivoltines than in multivoltine and multi x bi silkworm breeds. The approximate digestibility (A.D.) was highest (70.96%) in bivoltine race - KPG-B, whereas efficiency of conversion of ingested and digested food. (ECI, ECD) and growth rate (GR) were max. in multivoltine race – Nistari being 37.25%, 59.71% and 0.31% respectively.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Impact of optimum number of feeds/day and palatability of leaf harvest versus shoot harvest to silkworms.
Personnel :Mathur SK, Roy AK, Pramanik DR
Project Period :1986-1987
Objectives :To study feed related requirements and palatability to silkworms.
Results/Recommendations :It was observed that 4 feeds/day, chawki rearing upto second instar followed by shoot feeding was found superior with regard to economic characters over other treatments.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the mortality of bivoltine silkworms in the tropical plains of West Bengal.
Personnel :Mathur SK, Pramanik DR, Kishore Kumar CM
Project Period :1987-1988
Objectives :To study the disease incidence in silkworm rearing during unfavourable seasons.
Results/Recommendations :It was observed that the larval mortality during the unfavourable seasons was mainly due to the incidence of grasserie and the percentages were maximum in 5th stage (60-70%). The incidence of Flacherie was more (5-8%) than grasserie (4%) in favourable seasons.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of enrichment of mulberry leaves with protein.
Personnel :Mathur SK, Pramanik DR, Kishore Kumar CM
Project Period :1987-1988
Objectives :To study protein fortification to enrich mulberry leaves for better returns.
Results/Recommendations :The leaves mixed with 1-3% soyabean meal suspension in distilled water improved the rearing performance and fecundity of multivoltine silkworm.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on silkworm rearing with different mulberry varieties during 5th instar.
Personnel :Paul DC, Mathur SK, Pramanik DR, Kishore Kumar CM, Roychoudhury N, Basu R
Project Period :1988-1989
Objectives :To study the rearing performance using leaf from mixed varieties.
Results/Recommendations: It was observed that a constant change in the varieties having different nutritional levels in the 5th stage had no harmful effects on the larval survivability and other economic characters of cocoon. However, the mixed levels of different strains fed to the larvae in a single day, though not harmed the cocoon character but brought down the survival % of the larvae.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Comparative rearing performance of N x G silkworm on S1 and K2 mulberry varieties.
Personnel :Paul DC, Mathur SK, Pramanik DR, Kishore Kumar CM, Roychoudhury N, Basu R
Project Period :1988-1989
Objectives :To evaluate the rearing performance of identified silkworm races on S1 and K2 mulberry varieties.
Results/Recommendations :It was observed that K2 variety performed significantly better over S1 for yield/10,000 worms (No. and wt.), single shell wt., SR% and absolute silk content.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the effect of "Asiphor" on survivability and fecundity of bivoltine silkworms.
Personnel :Paul DC, Mathur SK, Pramanik DR, Kishore Kumar CM, Roychoudhury N, Basu R
Project Period :1988-1989
Objectives :To study the effect of Asiphor on survival and fecundity.
Results/Recommendations : Different concentrations of "Asiphor" failed to improve the economic characters of silkworm over control.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the spacing requirement for bivoltine hybrid under tropical conditions.
Personnel :Paul DC, Mathur SK, Pramanik DR, Kishore Kumar CM, Roychoudhury N, Basu R
Project Period : 1988-1990
Objectives :To work out the spacing requirements for bivoltine silkworms.
Results/Recommendations :It was observed that Chinese spacing (27.84 mt2/20,000) is best for bivoltine silkworm rearing followed by Indian and Japanese spacings.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore WestBengal.
Project Title :Studies on the effect of spacing, food quality, diet rationing and sanitation on the performance of bivoltine silkworms.
Personnel : Paul DC, Kishore Kumar CM, Shamsuddin M, Das S
Project Period :1989-1990
Objectives :To study the effect of different requirements on rearing performance of silkworms.
Results/Recommendations :Tender leaf feeding, wider Chinese spacing, two times bed cleaning daily and 10% diet rationing exhibited significantly better rearing performance over conventional method of rearing.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the effect of enrichment of mulberry leaves with carbohydrate fed to 5th stage bivoltine silkworm on cocoon crop production.
Personnel :Paul DC, Roychoudhury N, Shamsuddin M, Das S
Project Period : 1989-1990
Objectives :To study the fortification of carbohydrates on mulberry leaves for crop improvement.
Results/Recommendations :Mulberry leaves fortified with 0.4% sucrose and 0.4% commercial sugar solutions yielded more cocoons of bivoltine silkworm compared to normal leaf in both favourable and unfavourable seasons.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the impact of frequency and quantity of feeding on the performance of bivoltine silkworm rearing.
Personnel :Paul DC, Shamsuddin M, Das S
Project Period :1990-1991
Objectives :To study the impact of frequency and quantity of feeding on performance of bivoltine silkworm rearing.
Results/Recommendations : It was observed that 3 times feeding/day and 10% diet rationing have no detrimental effect on cocoon yield in different seasons over 4 and 5 times feeding daily.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the suitability of mulberry variety for young age and late age silkworms.
Personnel :Paul DC, Shamsuddin M, Basu R
Project Period :1990-1994
Objectives :To study the suitability of mulberry variety for young and late age silkworm rearing.
Results/Recommendations :It was observed that S1 and K2 varieties were suitable for young age silkworm rearing and TR10 and S1635 were suitable for late age rearing.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Transportation of dfls from grainage to farmers house.
Personnel :Shamsuddin M, Saha PK, Das S
Project Period :1991-1994
Objectives :To identify the suitable material for egg transportation.
Results/Recommendations :Among different types of locally available materials like, banana leaf, lotus leaf, "mankachu" leaf, wet gunny cloth, etc. highest hatching % of eggs (82.5-86.9%) was found when the egg sheets were transported covering with "mankachu" leaf and keeping in bamboo basket in hanging position.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Silkworm Physiology
Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the effect of Benzamide, an aliphatic hormone- mimicking compound on the growth and development of silkworm, Bombyx mori L.
Personnel :Sengupta K, Datta RK, Singh BD, Musafi JC
Project Period :1972-76
Objectives :To study the effect of hormone mimicking compound Benzamide on growth and development of silkworm.
Results/Recommendations :Benzamide treatment during 5th instar only had given better result in respect of ERR No., ERR wt., single shell wt and SR%.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the enrichment of mulberry leaves through fortification with different minerals for better cocoon crop production.
Personnel :Shamsuddin M, Saha PK, Das S
Project Period :1992-1994
Objectives :To study the feasibility of mineral fortification for better cocoon crop.
Results/Recommendations :Minerals like Potassium nitrate, Potassium iodide, Cobalt chloride and Calcium chloride were included in this study. It was observed that different concentrations of above minerals failed to improve the rearing performance of bivoltine silkworm significantly.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Fat and water content during metamorphosis of silkworm, Bombyx mori L (Nistari).
Personnel :Roy D, Gupta BK, Chinya PK
Project Period :1972-1973
Objectives :To study the biochemical constituents of silkworm during metamorphosis in silkworms.
Results/Recommendations :There is not much significant differences in water and fat content in the larvae of 5th instar from 1st day to 5th day. On the 6th day and 7th day, there is a significant increase in fat content with decrease in water content. The male pupae contain more fat than female pupae. In male pupae the fat content increases with the stages of growth, but it was just reverse in the female pupae.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Extraction of juvenile hormone from Bombyx mori L larvae.
Personnel :Sengupta K, Chakraborty N
Project Period :1976-1977
Objectives :To study the feasibility of extraction of juvenile hormone from brain and Corpora allata of silkworm Bombyx mori.
Results/Recommendations :JH was extracted from silkworm brain and corpora allata.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the free amino acid composition in haemolymph of different silkworm races.
Personnel : Dutta RN
Project Period :1983-1985
Objectives :To evaluate the composition of amino acid in haemolymph of different silkworm races.
Results/Recommendations :There is a heavy accumulation of free amino acids in haemolymph viz., Cystine, Lysine, Histidine, Arginine, Alanine, Serine, Glycine and Glutamic acid in the 5th day of 5th instar larvae in almost each case. In adult stage missing of some amino acids particularly Proline was observed.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the free amino acid composition in haemolymph of normal and uzi infected silkworm.
Personnel :Dutta RN
Project Period :1984-1985
Objectives :To study the free amino acid composition in haemolymh of normal and uzi infected silkworm.
Results/Recommendations :There is a tendency in losses of a few amino acids viz., Theonine, Tyrosine, Proline, Cysteic acid due to heavy attack by uzi fly. Besides these, concentration of some amino acids viz., Lysine, Arginine, Valine, Metheonine, Glutamic acid, Glycine, Serine etc., are low in haemolymph of infected silkworm as compared to control.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Development of artificial diet for mulberry silkworm and identification of silkworm breeds suitable for rearing on artificial diet.
Personnel : Shamsuddin M, Roychoudhury N, Basu R
Project Period : 1991-1994
Objectives :To study the suitability of artificial diet for mulberry silkworm and identification of suitable races for rearing on artificial diet.
Results/Recommendations : The bivoltine breed KSO is suitable for rearing on artificial diet. An artificial diet for late age silkworm had been developed.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Silkworm Seed Technology
Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title : Studies on the effect of refrigeration and incubation at low temperature on multivoltine eggs.
Personnel :
Project Period :1965-1966
Objectives :To study the effect of refrigeration and incubation of MV silkworm eggs on rearing performance.
Results/Recommendations :Hatchability was not much affected when it was delayed upto 45 days after oviposition. Only single cocoon wt. and single shell wt. were slightly affected when the eggs were incubated at 10°C.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Preservation of multivoltine eggs at low temperature.
Personnel :Datta RK, Sengupta K, Biswas SN
Project Period : 1968-1972
Objectives :To study the feasibility of long term low temperature egg preservation for multivoltines.
Results/Recommendations :Experiments on refrigeration of non-diapause multivoltine eggs at 5-7°C after different periods of incubation confirmed 36 hrs. after oviposition is the most suitable time for long term refrigeration.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Co-relation studies between incubation and preservation of bivoltine eggs (acid treated) at low temperature.
Personnel :Mathur SK, Roy AK, Pramanik DR
Project Period :1986-1987
Objectives :To study the co-relation studies between incubation and preservation of bivoltine eggs at low temperature.
Results/Recommendations :It was observed that in order to get above 90% hatching, the eggs incubated at room temperature upto 7 days can safely be preserved at low temperature for at least 10 days.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title : Artificial hatching of silkworm eggs-Studies on hot water treatment to break diapause in multivoltine and bivoltine eggs.
Personnel : Mathur SK, Roy AK, Pramanik DR
Project Period :1986-88
Objectives :
Results/Recommendations : It was observed that in multivoltine eggs there was no significant difference in hatching percentage between treated lots and control. It is interesting to note that in bivoltine eggs 87-93% more hatching was recorded in treated lots over control. The maximum hatching was recorded when the eggs were treated at 53.1°C for 5 seconds.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the effect of incubation of bivoltine hybrid eggs at different temperatures on hatchability and rearing performance.
Personnel :Paul DC, Mathur SK, Pramanik DR, Kishore Kumar CM, Roychoudhury N, Basu R
Project Period :1988-90
Objectives :To study the effect of incubation temperature of bivoltine hybrid eggs on hatchability and rearing.
Results/Recommendations : It was observed that incubation at 27°C is the best effective compared to 25°C and 30°C for hatching percentage and rearing performance of bivoltine hybrid NB18 x P5 are concerned.
Source of Information :Research Compendium of CSR&TI, Berhampore
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SubjectIndex :si 24
Sl No :45
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Refinement of seed technology package of SSTL, Kodathi for implementation in West Bengal condition - TAR programme.
Personnel : Saha AK, Datta (Biswas) T, Das SK
Project Period :2002-2003
Objectives :Refinement of seed technology package of SSTL, Kodathi for implementation in West Bengal condition.
Results/Recommendations :Methodology has bee standardized for
· Separation of male and female at cocoons.
· Determination of optimum of female for loose egg production.
· Number of eggs per gram in different crop seasons of West Bengal.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Silkworm Pathology
Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Evolution of disease resistant strains through selection on the basis of higher effective rate of rearing.
Project Period :1965-1967
Objectives :To evolve disease resistant mulberry varieties.
Results/Recommendations :Improvement in the effective rate of rearing (ERR) 7 generations in Nistari. However, the worms died due to extreme climatic conditions.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Evolution of disease resistant strains through selection from resistant individuals when treated with highly lethal dose of flacherie germs.
Personnel :Saha Kundu AK
Project Period :1965-78
Objectives :To study disease resistant strains through selection.
Results/Recommendations :Nistari was inoculated with flacherie germs generation followed by selection. No definite conclusions could be drawn.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the control of mortality in silkworm through use of leaf-bed disinfectants.
Personnel :Sengupta K, Saha Kundu AK, Mandal KC, Ghosh AK, and Chakravarty SK.
Project Period :1965-66, 1974-76, 1977-78
Objectives :To control silkworm mortality in silkworm using chemicals.
Results/Recommendations :Feeding of silkworms with leaves infected with Flacherie fluid followed by treatment with 2% Bleaching powder solution once in a day increased survival of worms by 11%. Feeding of 4% Bleaching powder solution had no detrimental effect.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the control of mortality in silkworm through use of cheaper antibacterial drugs.
Project Period :1965-1966
Objectives :To control silkworm mortality in silkworm using antibiotics.
Results/Recommendations :Streptotriad and Sulphatriad were fed to flacherie infected worms for control of mortality. Streptotriad had some effect in controlling the flacherie disease.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Evolution of grasserie disease resistant strains of silkworm through selection from resistant individuals when treated with lethal dose of grasserie germs.
Personnel :Saha Kundu AK, Yusuf MR
Project Period :1965-79
Objectives :To evolve grasserie disease resistant strains of silkworm through selection.
Results/Recommendations :Silkworms were inoculated with grasserie germs generation followed by selection. After 12 generations some resistance was observed, however, the line was lost due to extreme climatic conditions. Latter attempts also failed.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the control of grasserie through induction of immunity by introducing antigen.
Project Period :1965-1966
Objectives :To evolve grasserie disease resistant strains of silkworm through antigen introduction and by selection
Results/Recommendations :Grasserie germ heat treated at 56°C for 2-12 hrs and treated with formalized saline were fed to silkworm followed by inoculation of live grasserie germs to develop immunity. Results were inconclusive and hence the experiments were discontinued.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the losses due to different diseases in different seasons.
Personnel :Sengupta K, Saha Kundu AK, Musafi JC, Mitra P, Chandra AK, Ghosh AK, Bhattacharya J, Saha RK
Project Period :1965-87
Objectives :To study the season specific diseases and crop losses in silkworm.
Results/Recommendations :It was noted that under climatic conditions of West Bengal, November to March is the favourable season, September-October is moderate and rest of the months are unfavourable for silkworm rearing. Average mortality due to diseases ranged from 2.25-20.5% during favourable and unfavourable seasons respectively. Incidence of grasserie was found to be more during July-August, and least in November-December. Flacherie was highest during May and least during December-January.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the efficacy of formalin for surface sterilization of silkworm eggs for control of pebrine.
Project Period :1967-1969
Objectives :To study the efficacy and feasibility of formalin usage as surface disinfectants.
Results/Recommendations :Surface sterilization of silkworm seed with 1-2% formalin for 10-20 minutes gave satisfactory results.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the control of pebrine through heat treatment of infected silkworm eggs.
Personnel :Saha Kundu AK, Chakravarty S, Ghosh AK, Chandra AK, Dam PK, Mukhopadhyay SK
Project Period :1967-84
Objectives :To study the effect of heat treatment of silkworm eggs for pebrine control.
Results/Recommendations :Heat treatment of eggs at 45-46°C for 45-60 min., increased ERR significantly, though pebrine infection in the lot could not be eliminated completely.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the detection of pebrine sprores and susceptibility of silkworm to the pebrine disease.
Project Period :1967-69
Objectives :To study the disease incidence ad susceptibility of silkworm to pebrine disease.
Results/Recommendations :It was noted that egg and the fifth instar larvae are comparatively less susceptible to disease. Spores were detected from the crushed larvae after 5-8 days of inoculation.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on seasonal influence on the incidence of pebrine disease in multivoltine silkworms.
Personnel :Saha Kundu AK, Noamani MKR.
Project Period :1969-70
Objectives :To study the seasonal incidence of pebrine disease.
Results/Recommendations : Larval mortality due to pebrine was highest (97.89%) in July-August and least (19.66%) during May-June.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on assessment of different cocoon characters as influenced by pebrine disease.
Personnel :Saha Kundu AK, Noamani MKR
Project Period :1969-1970
Objectives :To study the cocoon characters of pebrine infected silkworms.
Results/Recommendations :Experiment was conducted on four races namely Nistari, MBDIV, MBDV and D3C. In all the races pebrine infection showed no difference in cocoon weight but filament weight, renditta and denier were found to be inferior in pebrine infected lots.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of feeding silkworms with different varieties of mulberry leaves in relation to their mortality due to various diseases.
Personnel :Saha Kundu AK, Noamani MKR
Project Period :1969-1971
Objectives :To study the effect of feeding silkworms with different varieties and their effect on mortality.
Results/Recommendations :It was observed that mortality due to different diseases was highest in lots fed with Kosen leaves during June - August and in lot fed with Morus laevigata during September to January.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Preliminary studies on the inheritance of grasserie disease in silkworm.
Personnel :Saha Kundu AK, Yusuf MR
Project Period :1969-1973
Objectives :To study the inheritance of grasserie disease in silkworm.
Results/Recommendations :Layings from moths showing polyhedra were reared for 13 generations. ERR was lowered and grasserie infection was higher in the lot than control suggesting generation to generation transmission of grasserie through mother moth, at least to some extent. Hence grasserie infected mother moths should be avoided for race continuation.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the efficacy of Papzol as disinfectant against viral diseases of silkworm.
Personnel :Saha Kundu AK, Yusuf MR
Project Period :1969-1971
Objectives :To study the efficacy of Papzol disinfectant against viral disease of silkworms.
Results/Recommendations :Dusting of Papzol @ 2.5-3 gms./sq.ft area reduced infection of grasserie and gattine diseases in the lot in comparison to control.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the relative susceptibility of different races of the silkworm to various diseases.
Personnel :Saha Kundu AK, Yusuf MR
Project Period :1969-1972
Objectives :To study the relative susceptibility of different races of silkworm to various diseases.
Results/Recommendations :Observations on the relative susceptibility of different races were made under natural conditions and no inoculation was given to the worms. The study indicated that univoltine and bivoltine races were highly susceptible than Nistari and MBDV. It was further noted that N122. C122 (M) was most susceptible to grasserie followed by N122, C122 (P), MBDV and Nistari.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the efficacy of some anti-protozoan drugs against pebrine disease of silkworm.
Personnel :Sengupta K, Saha Kundu AK, Chandra AK, Dam PK, Mukhopadhyay SK
Project Period :1970-74, 1980-84
Objectives :To study the efficacy of anti-protozoan drugs to control pebrine disease of silkworm.
Results/Recommendations :The drugs Polyquin, Enteroquinol, Tinidazole and Idocycline had no favourable effect in reducing pebrine infection. Flazyl could increase survival of worms by 12.56%. Camoquin also showed similar results, but none of them reduced the infection.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Investigations on the relative susceptibility of different races of silkworms to pebrine disease.
Personnel :Saha Kundu AK
Project Period :1970-1972
Objectives :To investigate the relative susceptibility of different races of silkworms to pebrine disease.
Results/Recommendations :Univoltine and bivoltine races appeared to be more susceptible to pebrine disease than multivoltines and their hybrids.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on effect of heat on pebrinised pupae.
Personnel :Saha Kundu AK, Yusuf MR
Project Period :1972-1976
Objectives :To study the effect of heat on pebrinised pupae in controlling pebrine.
Results/Recommendations :Pebrinised cocoons on the 8th day of spinning treated at 40°C for 12-16 hours reduced mortality due to pebrine and pebrine infection in the moth. Next best treatment was 35°C for 16 hours.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the incidence of pebrine infection in eggs from female pebrinised moths.
Personnel :Saha Kundu AK, Yusuf MR, Mondal KC
Project Period :1972-1975
Objectives :To study the infection rate in eggs from female pebrinised moths.
Results/Recommendations :The study revealed that the rate of pebrine infection varied from moth to moth and season to season.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the relative susceptibility of different instars of silkworm larvae to flacherie disease.
Personnel :Saha Kundu AK, Yusuf MR, Sengupta K
Project Period :1972-1975
Objectives :To study the relative susceptibility of different instars of silkworm larvae to flacherie disease.
Results/Recommendations :It has been observed that 4th instar silkworm larvae are less susceptible to flacherie in comparison to 2nd and 3rd instar larvae.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the effect of refrigeration of blue eggs following incubation at room temperature on the incidence of diseases.
Personnel :Saha Kundu AK, Yusuf MR, Sengupta K.
Project Period :1972-1975
Objectives :To study the effect of refrigeration of blue egg on disease incidence.
Results/Recommendations :The study revealed that mortality due to flacherie increased in lots with increased time of refrigeration, besides adversely affecting hatching %. Eggs did not hatch at all when the eggs were refrigerated for 24 days or more.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Evolution of high yielding multivoltine disease resistant strains of silkworm.
Personnel :Saha Kundu AK
Project Period :1973-1981
Objectives :To evolve high yielding multivoltine disease resistant strains of silkworm.
Results/Recommendations :Bivoltine (N-501,C-502) and Multivoltine (Nistari plain) races were taken as parents for race breeding and selection. It was observed that after 14 generations the ERR of the evolved race was almost at par with Nistari and cocoon wt. shell wt. SR% were significantly higher than Nistari. However, differences between generations were not significant.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the effect of Benomyl on pebrinised silkworm larvae.
Personnel :Saha Kundu AK, Chandra AK, Musafi JC, Chakraborty SK
Project Period :1975-1981
Objectives :To study the effect of Benomyl on pebrinised silkworm larvae.
Results/Recommendations :Benomyl (250 and 500 ppm) significantly increased the survival of pebrinised larvae. In another experiment, Benomyl 1000 ppm gave highest ERR when treated for first 6 days after hatching. Feeding of Benomyl 4000 ppm from hatching to spinning at alternate feeding was effective. Treatment of Benomyl 4000-8000 ppm from 3rd stage to spinning was effective in increasing ERR significantly.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on combined effect of heat on pupae and Benomyl on pebrinised silkworm larvae.
Personnel :Saha Kundu AK, Chandra AK
Project Period :1975-1976
Objectives :To study the combined effect of heat on pupae and Benomyl in pebrine control.
Results/Recommendations :It was seen that heat treatment on pebrinised pupae for 12 hrs at 40°C plus feeding of Benomyl (500 ppm) to larvae showed significantly better survival over control.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on effect of refrigeration of multivoltine silkworm eggs on the incidence of diseases.
Personnel :Sengupta K, Saha Kundu AK, Mitra P
Project Period :1975-1982
Objectives :To study the effect of refrigeration of multivoltine silkworm eggs on the incidence of diseases.
Results/Recommendations :When eggs of Nistari within 48 hrs. of oviposition were refrigerated for 2-32 days, it was seen that mortality due to flacherie increased considerably. Mortality due to different diseases started increasing after 16 days of refrigeration which affects ERR remarkably.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the effect of Mebendazole on pebrine infection.
Personnel :Saha Kundu AK, Chandra AK, Musafi JC
Project Period :1977-1980
Objectives :To study the effect of Mebendazole on pebrine infection.
Results/Recommendations :It was revealed that feeding of Mebendazole (Pantelmin) @ 2000 ppm along with mulberry leaves increased the survival of pebrine infected worms significantly. However, the treatment could not eliminate pebrine infection from the lot.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the control of flacherie disease of silkworm with antibiotics.
Personnel :Saha Kundu AK, Musafi JC, Bhattacharya SS, Asish Ghosh, Chakraborty SK, Chandra AK, Dam P, Mukhopadyay SK
Project Period :1978-1984
Objectives :To study the feasibility of antibiotics on silkworm disease control.
Results/Recommendations :Treatment of Penicillin and Streptomycin to 5th instar worms significantly increased the survival and reduced disease incidence in the population. Treatment of Hostocycline and Septran increased the ERR significantly. Treatment of tetracycline and Doxacycline also significantly increased the ERR of worms.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the control of gattine with Vitamin C.
Personnel :Saha Kundu AK, Musafi JC, Bhattacharya SS, Ghosh AK, Chandra AK
Project Period :1978-1984
Objectives :To control gattine using Vitamin-C.
Results/Recommendations :Feeding of 2000 ppm of Ascorbic acid twice a day significantly decreased mortality due to gattine.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Study on the role of Ascorbic acid towards control of pebrine infection.
Personnel :Chandra AK, Dam PK
Project Period :1982-1983
Objectives :To study the role of Ascorbic acid in controlling pebrine disease.
Results/Recommendations :Feeding of 1-5% ascorbic acid to silkworms followed by inoculation of pebrine spores revealed that the treatments could increase the ERR of the worms and SR%.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Study on the effect of bleaching powder in controlling grasserie disease of silkworm.
Personnel :Ghosh AK, Dam PK
Project Period :1983-1986
Objectives :To study the efficacy of bleaching powder in controlling grasserie disease of silkworm.
Results/Recommendations :It was found that grasserie infected larvae fed with 0.3-4% bleaching powder solution. through food had no significant effect.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Survey of microsporidian parasites from mulberry pests. Personnel :Chandra AK, Ghosh AK
Project Period :1985-1990
Objectives :To understand the alternative hosts for microsporidian parasites.
Results/Recommendations :Various pests belonging to Lepidoptera, Hemiptera, Coleoptera and other Orthoptera were collected but no microsporidians were found.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Cross transmission studies of microsporidian parasites among mulberry pests and silkworms.
Personnel :Chandra AK, Ghosh AK
Project Period :1985-1986
Objectives :To understand the cross infectivity of microsporidians parasites among mulberry pests and silkworms.
Results/Recommendations :Nosema bombycis infects Bihar hairy caterpillar (Diacrisia obliqua) and the rate of transmission is 94.3%.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of dusting of different chemicals on grasserie affected silkworms.
Personnel :Chandra AK, Ghosh AK, Bhattacharya J, Saha RK
Project Period :1985-1988
Objectives :To study the effect of dusting of different chemicals on grasserie affected silkworms.
Results/Recommendations :Different chemical mixtures were dusted once daily over grasserie infected silkworms. Increase in survival due to different treatments were observed as follows: Lime (8.56%), Lime + Benzoic acid (9.26%), Lime + Paraformaldehyde (8.95%), Lime + Salicylic acid (10.33%), Lime + Bleaching powder (10.42%).
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of Chloramphenicol against grasserie infection in silkworms.
Personnel :Chandra AK, Ghosh AK, Bhattacharya J
Project Period :1986-1987
Objectives : To study the efficacy of Chloramphenicol against grasserie infection in silkworms.
Results/Recommendations :Feeding of 1 and 2% chloramphenicol to grasserie infected worms increased survival @ 5.25-11.0% and 4.5-6% respectively over control.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Assessment of cocoon crop loss due to secondary infection of pebrine.
Personnel :Chandra AK, Ghosh AK, Bhattacharya J.
Project Period :1986-1987
Objectives :To understand the cocoon crop loss due to secondary infection of pebrine.
Results/Recommendations :Healthy silkworms infected with pebrine at third stage (4.8 x 108 spores/ml) showed 16.25 to 49.75% mortality in different seasons while pebrinised layings recorded 44-100% mortality.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Assessment of cocoon crop loss due to different diseases at adopted and non-adopted rearers' level.
Personnel :Chandra AK, Bhattacharya J, Saha RK, Kant AK, Shukla G, Krishanan N
Project Period :1987-1992
Objectives :To study the comparative crop loss among adopted and non-adopted rearers.
Results/Recommendations :The survey revealed that the average crop loss was minimum (12.19%) during Agrahayani crop and maximum (29.72%) during Bhaduri crop. The overall crop loss was 16.97%, accounting 13.05% at adopted and 21.47% at non-adopted rearers' level. In Murshidabad district, the overall crop loss in adopted and non-adopted rearers' level was 13.68 and 39.01% respectively. In Birbhum district, overall crop loss was almost at par in adopted (32.43%) and non-adopted (32.01%) rearers' level. High crop loss in adopted rearers' level was mainly due to incidence of pebrine in some seasons.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on dusting of lime-bleaching powder on mass rearing of silkworm.
Personnel :Chandra AK, Bhattacharya J
Project Period :1987-1988
Objectives :To study the feasibility of dusting of lime-bleaching powder on mass rearing by silkworm.
Results/Recommendations :Dusting of lime-bleaching powder mixture (99:1 during first stage, 98:2 during second stage and 97:3 during third to fifth stage) on mass rearing of silkworms resulted in 1.26 kg. and 1.76 kg. more yield per 100 dfls. when dusted once after each moult and daily respectively.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on dusting of different chemical mixtures against muscardine disease infection.
Personnel :Chandra AK, Bhattacharya J, Saha RK
Project Period :1987-1988
Objectives :To evaluate different chemicals for muscardine disease infection.
Results/Recommendations :Among different chemical mixtures tried towards control of muscardine infection, lime-bleaching powder 97:3, lime-paraformaldehyde 98:2, lime-copper sulphate 95:5, lime-sulphur 95:5, Kaolin-dithane M-45 98:2, kaolin-benzoic acid-paraformaldehyde-dithane M-45 96:2, significantly increased the survival in the muscardine infected lots.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of Bavistin in controlling Nosematosis in silkworm.
Personnel :Chandra AK, Saha RK, Bhattacharya J
Project Period :1987-1988.
Objectives :To study the feasibility of Nosematosis in silkworms.
Results/Recommendations :Feeding of Bavistin (3 and 4%) treated leaves to silkworms infected with pebrine during 4th and 5th instars increased survival of worms during summer months, though pebrine infection in the lot was not reduced. During winter on the other hand, pebrine infection in the lot was found to be significantly reduced. Treatment of Bavistin 3 and 4% to worms from patronized layings increased the survival of worms as well as reduced pebrine infection in the lot significantly. Total elimination of infection from the lot, however, was not observed.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Comparative studies on the efficacy of Lime-Bleaching powder and Reshamkeet Oushad as prophylactic agents.
Personnel : Chandra AK, Bhattacharya J
Project Period :1988-1990
Objectives :To bring out economic feasibility and comparative analysis on the use of lime-bleaching powder ad Reshamkeet oushad as prophylactic agents in silkworm rearing.
Results/Recommendations :It was observed that both Lime-Bleaching powder, 97:3 and RKO increased the survival of worms significantly in some of the seasons. Their efficacy was found to be at par.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Project Title :Rearing of silkworms under low and high temperatures to control grasserie disease.
Organization :Central Sericultural Research and Training Institute, Berhampore
Personnel :Chandra AK, Kant AK
Project Period :1989-1991
Objectives :To evaluate the rearing performance of silkworm under low and high temperature to control grasserie disease.
Results/Recommendations :When the grasserie infected silkworms exposed to 37°C for 5 and 10 hrs. and then reared at available room temperature, it increased the survival of worms by 16.8 and 15.6% respectively.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Rearing of silkworms at higher temperature to control viral flacherie.
Personnel :Chandra AK, Shukla G
Project Period :1989-1990
Objectives :To study the effect of temperature to control viral flacherie.
Results/Recommendations :When silkworms infected with viral flacherie were exposed to 37°C for 24, 48, 72 and 96 hours and reared at room temperature, only 24 hour treatment could increase the survival of worms by 7.6 %, but the results were not consistent in all the seasons.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the improvement of disinfection.
Personnel :Chandra AK, Bhattacharya J
Project Period :1990-1994
Objectives :To evolve improved methods of disinfection.
Results/Recommendations :Comparative studies on efficacy of different room disinfectants indicated that formalin 2%, bleaching powder 5%, asiphor 2% and their 1:1 combinations were all significantly effective in inactivating the pathogens. However, bleaching powder solution was seen to be most effective and the same has been recommended. Besides, some bed-disinfectants were tried against BmNPV and Beauveria bassiana infection. lime-bleaching powder 97:3, lime-boric acid 95:5 against BmNPV and lime-bleaching powder 97:3, lime-bleaching-Captaf 96:3:1 against muscardine were found to be most effective.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Physiotherapeutic and chemotherapeutic studies towards control of silkworm disease.
Personnel : Chandra AK, Bhattacharya J, Kant AK, Krishnan N
Project Period :1990-1997
Objectives :To evaluate some physiotherapeutic or chemotherapeutic approaches for the control of silkworm diseases.
Results/Recommendations :
· Feeding of antibiotics viz., Chloramphenicol, Erythromycin, Tetracycline and Oxytetracycline at 0.05% concentration to grasserie infected worms revealed that only Chloramphenicol was able to reduce mortality due to NPV in the lot by 7.05%. Feeding of two other antibiotics viz. Rifampicin and Cifran recorded 9.24 and 5.05% increase in survival of NPV infected worms.
· Pebrinised layings were treated with HCl (sp. gravity 1.05) at 47°C for 10, 20 and 30 minutes and at 46°C for 30 minutes within 24 and 48 hrs. of oviposition. HCl treatment at 46°C for 30 minutes gave maximum survival of worms (68.33%) against 3.33% control.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Project Title :Studies on the immuno diagnosis of silkworm diseases.
Personnel :Chandra AK, Bhattacharya J, Krishnan N
Project Period :1991-1997
Objectives :
· To standardize methods for immunodiagnosis of silkworm diseases.
· To use one or more of these techniques to develop an immunodiagnostic test kit.
· To use the immunodiagnostic test kit on a large scale in the field.
Results/Recommendations :
· Agar gel double diffusion test has been standardized for detection of NPV infected silkworm. The test was successful using sodium carbonate saline, [SCS (0.1 ml, Na2CO3, 0.5 ml NaCl, pH: 11.0)] dissolved BmNPV as antigen. The antiserum raised against dissolved BmNPV was reactive with a wide range of antigenic titers (2x106 OBs/ml - 1x109 OBs/ml) compared to antiserum raised against undissolved BmNPV. Gel plates prepared using phosphate buffered saline (PBS) gave sharper precipitin lines as compare to SCS as dissolving medium for agarose.
· Single radial diffusion test for detection of nuclear polyhedrosis virus infecting silkworm was standardized by using 0.8% agarose in PBS. The test could detect antigen titer as low as 1x107 OBs per ml and the optimum titer of antiserum required for the test was 1-2%.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore, West Bengal.
Project Title :Screening and isolation of disease resistant races of silkworm Bombyx mori L.
Personnel : Chandra AK, Krishnan N
Project Period :1991-1997
Objectives :To screen and isolate races of silkworm for their tolerance to different diseases caused by nuclear polyhedrosis virus, pebrine, bacterial and muscardine pathogens.
Results/Recommendations :Fourteen silkworm races (9 multivoltine and 5 bivoltine) were screened for their resistance to NPV infection. All the bivoltine races were found to be highly susceptible. Among the multivoltine races, Tamil Nadu White, OYBC and OS-616 were found to be relatively resistant to NPV infection.
These three races were reared following antigenic stimulation in each generation. On subjecting the results of F10 to F18 generations of these races to ANOVA it was observed that treatment, race, generation, race x treatment and race x generation had significant effect in inducing resistance to NPV.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Project Title :Survey and surveillance of silkworm diseases and its management.
Project Period :1992-1994
Personnel :Chandra AK
Objectives :To conduct a survey to understand the Survey and surveillance of silkworm diseases and its management.
Results/Recommendations :An exhaustive survey was conducted for two years in Seed and Commercial crops from 7 districts of West Bengal. The survey revealed that disease mortality is more in commercial crop (avg. 26.36%) compared to seed crop (avg. 16.71%). While considering the crop loss district wise, more crop loss was recorded in Birbhum (36.4%) followed by Murshidabad (24.5%) and Malda (23.5%). This study on crop loss in different districts indicated the `hot spot' as well as the season of high disease incidence and mortality which is helpful for alerting farmers through forewarning system.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Demonstration of application of silkworm bed disinfectant (labex) for prevention of silkworm diseases.
Personnel : Chandra AK, Saratchandra B
Project Period :1995-1997
Objectives :
· Field level demonstration on the methodology of application of evolved bed disinfectants towards prevention of silkworm diseases.
· Evaluation of efficacy of bed disinfectants.
· Increase the awareness among the sericulturist on the potential benefit of using bed disinfectants.
Results/Recommendations :Field level demonstration on the use of bed disinfectant (labex) conducted in some selected areas of Bihar, Assam, Orissa and Mizoram in commercial crops during different seasons revealed that use of labex ensured 0.97-5.23%, 7.0-9.09%, 4.66-18.82%, 5.73-8.09% and 4.04-5.11% gain in survival of silkworms at Gumla, Lohardaga, Jorhat, Koraput and Aizwal respectively.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Haemocyte immunity study of silkworm, Bombyx mori L.
Personnel :Mitra P, Sengupta AK, Krishnan N, Madana Mohanan, Moorthy SM
Project Period :1997-2002
Objectives :
· To obtain information on the relationship between the structure and nature of blood cells of Bombyx mori and the tolerance to diseases. The regulation of the heaemocyte defense response will also be investigated.
· Identification of disease tolerant silkworm race from the germplasm based on above.
· The identified tolerant races will be used as parents by breeders to develop immune/tolerant hybrids.
Results/Recommendations :On the basis of cellular defense response to bacterial/ particulate virus infection, six hybrids were evaluated and graded for their resistance to bacterial diseases as follows:
MV x MV :M12 (w) x M6DP x M12 (w) > M12 (w) x M6M81.
MV x BV: M12 (w) x (SK6 x SK7)> M6DP x SK7.
BV x BV: BHR2 x BHR3 on par with SK6 x SK7.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Entomology
Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on life cycle and biology of uzi fly.
Project Period :1963-1969
Objectives :To study the biology and life cycle of uzi fly.
Results/Recommendations :Incubation period of uzi eggs was 29-30 hours, larval duration was 5 days followed by 10 days of pupal period. Males are having more longevity (9 days 20 min.) than females (6 days 30 min). Pre-mating period was estimated to be 46 hrs. mating lasts for 69 minutes. The pre-oviposition and oviposition periods are 44 hrs and 69 hrs respectively. The fecundity of a female was estimated as 271, sex ratio was 1.1:1. Glucose, honey and molasses favoured the egg laying. Survival rate indicates that adults prefer sugar.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of insect chemosterillant 'Apholate' on Tricholyga bombycis.
Project Period :1970-1974
Objectives :To study the feasibility of chemosterillant ‘Apholate’ on Tricholyga bombycis.
Results/Recommendations :When flies were subjected to different concentrations and exposure periods of Apholate, a chemosterillant the results of hatchability were not showing definite trends or indications as regards to the induction of sterility.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of insect chemosterillant 'Tepa' on Tricholyga bombycis.
Project Period :1970-1974
Objectives :To study the effect of insect chemosterillant ‘Tepa’ on Tricholyga bombycis.
Results/Recommendations :Three concentrations viz., 0.05, 0.5 and 1% of chemosterillant ‘Tepa’ were found effective. By using 1% concentration of chemosterillant hatching was nil.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of ‘Thiotepa’ chemosterillant on Tricholyga bombycis.
Personnel : Singh K, Mukherjee PK, Sen AK
Project Period :1970-1974
Objectives :To study the effect of insect chemosterillant ‘Thiotepa’ on uzi fly.
Results/Recommendations :Amongst all the concentrations 0.15% Thiotepa reduces the fecundity and completely prevents hatching of uzi maggots.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on uzi fly infection on different races and stages of silkworm.
Personnel :Singh K, Mukherjee PK, Sen AK
Project Period :1970-1974
Objectives :To evaluate the resistant races for uzi infection.
Results/Recommendations :There is no variety or race particularly resistant to the infection viz., eggs hatched and maggot period has fluctuated irrespective of 4th and 5th stage of silkworm, race and voltinism.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Emergence of uzi fly in various pupal media.
Personnel : Singh K, Mukherjee PK, Sen AK
Project Period :1970-1974
Objectives :To study the emergence of uzi fly in different pupal media.
Results/Recommendations :The average percentage of emergence was maximum in the compost medium followed by sand, cow dung and soil with 80.3%, 72.8% and 72.7% respectively.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the use of different traps for catching uzi fly.
Personnel : Sengupta K, Mukherjee PK
Project Period :1970-1974
Objectives :To evaluate the different types of traps for uzi fly.
Results/Recommendations :Of the three types of traps tried honey mixed with the lac has attracted maximum number of flies.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the development of toxicity in silkworm larvae due to oral administration of bleaching powder solution through mulberry leaves.
Personnel :Datta RK, Biswas SN, Mukherjee PK, Haque S
Project Period :1970-1974
Objectives :To study bleaching powder toxicity in silkworms to control uzi fly.
Results/Recommendations :There is no sterilizing effect of bleaching powder on the worm fed with one or two days. However, in worms fed with the bleaching powder for 3 days toxicity developed leading to a mortality in maggots inside the body.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Investigations on the toxicity of various insecticides on mulberry and their effect on subsequent feeding to silkworms.
Personnel :Datta RK, Biswas SN, Mukherjee PK, Haque S
Project Period :1970-1974
Objectives :To study the toxic effects of various insecticides on mulberry and their effect of subsequent feeding to silkworms.
Results/Recommendations :Insecticides like sevin, nuvan, rogor and parathion of various concentrations were sprayed on mulberry plants and leaves were fed to silkworms after 5, 10 and 15 days of interval. In all treatments larval weight and effective rate of rearing were significantly reduced when compared with control. Larval period, weight of single shell and SR% did not vary very much with the difference in the concentrations of the various insecticides as well as the interval of feeding after spraying.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Efficacy of some insecticides against mealy bug, causative agent of tukra disease.
Personnel :Biswas SN, Haque S
Project Period :1970-1974
Objectives :To study the efficacy of some insecticides against tukra causing mealy bug.
Results/Recommendations :Four systemic insecticides namely furadon, metasystox, dimecron and aldrox were used for control of mealy bug. The results indicated that though the incidence of tukra infection in the treated plots was lower as compared with that in the untreated control plots, this lowering is not statistically significant.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the use of ‘Hempa’ as a potential chemosterillant for mass sterilization of Tricholyga bombycis
Personnel :Datta RK, Biswas SN, Mukherjee PK, Haque S, Mishra PN
Project Period :1974-1979
Objectives :To study the effect of chemosterillant ‘Hempa’ on sterilization of uzfi fly Tricholyga bombycis.
Results/Recommendations :The females treated with 1.5% ‘Hempa’ shows significantly declined egg laying behaviour.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the effect of Hemel hydrochloride on insect chemosterillant on T. bombycis.
Personnel :Datta RK, Biswas SN, Mukherjee PK, Haque SK, Mishra PN
Project Period :1974-1979
Objectives :To study the effect of Hemel hydrochloride on T. bombycis.
Results/Recommendations :The sterility percentage for both male and female treated batches was above 80.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of chemosterillant fumigation on the sterility of Tricholyga bombycis.
Personnel :Datta RK, Biswas SN, Mukherjee PK, Haque SK, Mishra PN
Project Period :1974-1979
Objectives :To study the effect of Thiotepa as chemosterillant on T. bombycis.
Results/Recommendations :The exposure of uzi fly pupa to the fumes of thiotepa has induced 90% sterility in 1-5 days old pupae. The maggots which were exposed to Thiotepa fumes for 2 hrs, the female sterility were 87%. Higher sterility was observed in the male treated batches particularly where mass mating was made.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Evaluation of some insecticides for the control of pests associated with the mulberry leaves.
Personnel :Datta RK, Biswas SN, Mukherjee PK, Haque SK, Mishra PN
Project Period :1974-1979
Objectives :To evaluate different insecticides for the control of pests associate with mulberry leaves.
Results/Recommendations :Four insecticides namely thiodan, malathion, sevin and parmor were sprayed by using 0.1% concentration and found effective in controlling the pests.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on tukra disease and its control regarding residual toxicity of various insecticides towards silkworm.
Personnel :Biswas SN, Haque S
Project Period :1974-1979
Objectives :To study the residual toxicity to silkworms of various insecticides used to control tukra.
Results/Recommendations :It was seen that average number of cocoons harvested was very poor. In Thimet higher dose followed by Temik 10 gms other economic characters like SR% was also comparatively low in Thimet higher dose (11.81%) followed by Temik 10 g (11.91%) against control of 13.06%.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Sterilization of uzi fly by penfluron.
Personnel :Datta RK, Biswas SN, Haque SK
Project Period :1980-1984
Objectives :To study the sterilization property of pefluron on uzi fly.
Results/Recommendations :Penfluron was effective in inducing complete sterility in the female flies.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of dimilin (low concentration) on the sterility of uzi fly.
Personnel :Biswas SN, Sen AK
Project Period :1980-1984
Objectives :To study the effect of dimilin on sterility of uzi fly.
Results/Recommendations :The percent sterility in male and female treated batches was 51 to 53.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the effectiveness of penfluron following prolonged refrigeration inducing sterility to the female uzi flies.
Personnel :Biswas SN, Mondal LN
Project Period :1980-1984
Objectives :To study the effect of penfluron on female uzi flies.
Results/Recommendations :Though the chemical was refrigerated for ten months complete sterility was achieved in the female treated series.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the incidence of uzi fly infestation outside the rearing house of CSR&TI, Berhampore and the efficacy of Naphthalene balls as a repellent in controlling the pest.
Personnel :Biswas SN, Mondal LN
Project Period :1980-1984
Objectives :To study the feasibility of Naphthalene balls as a repellent to control uzi fly.
Results/Recommendations :Naphthalene balls were proved potential repellent. They have reduced the fecundity of the flies.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on tukra disease and its control.
Personnel:Biswas SN, Sinha Deo SN
Project Period :1980-1984
Objectives :To study the disease incidence and control measures of tukra disease.
Results/Recommendations :Four insecticides namely phoratex-10G, jolan 35 EC, sevin and rogor were applied three times at the interval of 20 days. The results showed that for the control of tukra disease and subsequent silkworm rearing, phoratex (88 gms/ acre) is a suitable insecticide. Waiting period was 20 days after last spray.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on incidence of tukra disease in different eco-zones.
Personnel :Mukherjee PK, Nath TN, Das AK
Project Period :1980-1984
Objectives :To study the incidence of tukra disease in different eco-zones.
Results/Recommendations :Of the varieties studied viz., Kajali, S1, S763, S776, S1531, S1301, are susceptible for tukra and it can be concluded that S1 and S799 varieties of mulberry are comparatively less susceptible to tukra in different ecozones.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the effect of malathion in the control of dermested beetle.
Personnel :Mukherjee PK, Nath TN, Das AK
Project Period :1980-1984
Objectives :To study the effect of malathion in control of dermestid beetle.
Results/Recommendations :Of the three concentrations tested, the concentration of 10ml/litre of water shows the best results as compared to other concentrations.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the effect of juvenile hormone analogue 'Manta' on uzi fly maggots.
Personnel :Mukherjee PK, Das AK, Saha AB
Project Period :1985-1989
Objectives :To study the effect of ‘Manta’ on uzi fly maggots.
Results/Recommendations :The study indicated that ‘Manta’ has a definite killing action on uzi fly maggots within the silkworm larva.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on sex ratio and natural pupal mortality of uzi fly.
Personnel :Mukherjee PK, Das AK, Saha AB
Project Period :1985-1989
Objectives :To study the sex ratio and natural pupal mortality of uzi fly.
Results/Recommendations :The male and female sex ratio was 1.38:1. The pupal mortality was maximum (15.28%) in June and minimum in December (0.63%).
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Survey and surveillance of uzi fly.
Personnel :Chandra AK, Das AK, Saha AB
Project Period :1985-1989
Objectives :To study the surveillance of uzi fly.
Results/Recommendations :The generation survivability of uzi fly was 15.75%, generation mortality 48.25%. Sex ratio was nearly 1:1.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on control of uzi fly.
Personnel :Chakraborty NG, Das AK, Sarkar J
Project Period :1985-1989
Objectives :To study the control measure for uzi fly.
Results/Recommendations :Percentage of uzi-infestation was found to be lower when silkworm lots were treated with citronella oil than in untreated lots. The efficacy of uzicide was directly proportional to the number of sprays.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Effect of paratox on the control of tukra disease of mulberry.
Personnel :Mukherjee PK, Das AK, Saha AB
Project Period :1985-1989
Objectives :To study the paratox on the control of tukra disease of mulberry.
Results/Recommendations :All the three treatments used (first spraying after pruning and next after 25 days, first spraying after pruning and next after 50 days, and first spraying after pruning and next two after 25 days and 50 days respectively) were performed better when compared to control.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Control of uzi fly.
Personnel : Chakraborty N, Bhattacharya S, Gupta SK
Project Period :1990-1998
Objectives :To develop an integrated management package for uzi fly.
Results/Recommendations :
· As a mechanical control measure (Fly trap an electrical device has been innovated) with a proven efficacy of 41%.
· As a chemical control measure spray of 2% bleaching powder solution has been recommended.
· The spray of this solution kills uzi eggs to an extent of 95-98% without causing any adverse effects on silkworms.
· Fly trap for attracting and trapping of adult uzi flies.
· Spray of 2% bleaching powder solution for killing uzi eggs.
Project Outcome :Fly trap and 2% bleaching powder solution.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Life table and population dynamics of uzi fly on its primary host, Bombyx mori.
Personnel : Chakraborty N, Bhattacharya S, Gupta SK
Project Period :1990-1995
Objectives :
· To study the seasonal incidence of uzi fly.
· To study on the correlation between uzi incidence and abiotic factors.
· To develop forewarning calender for uzi incidence.
Results/Recommendations :
· Assessment of crop loss: Murshidabad (19.07%), Birbhum (30.08%), Malda (12.25%).
· Forewarning for high uzi incidence seasons: Murshidabad: April (Baisakhi), July (Shrabani), September (Ashwina).
· Birbhum: April (Baisakhi), July (Shrabani), September (Ashwina), November (Agrahayani).
· Malda: April (Baisakhi), August (Bhaduri).
· Qualitative crop loss due to uzi fly infestations in three traditional districts of West Bengal was worked out as 19.07% (Murshidabad), 30.08% (Birbhum) and 12.24% (Malda).
· A forewarning calendar indicating high uzi incidence season was prepared and distributed to extension functionaries.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Control of mulberry pests.
Personnel : Chakraborty N, Santha Kumar MV, Ashwini Kumar C
Project Period :1990-1998
Objectives :To develop a integrated management package for the control of mulberry pest.
Results/Recommendations :
· A forewarning calendar was prepared for thrips and mealy bug based on 3 years survey data.
· 0.1% dimethoate is recommended for the control of thrips and mealy bug with a safe period of 14 days.
· As a biological control measure release of 600 pairs of Scymnus bourdilloni (Coleoptera:Coccinellidae).
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on whitefly and its management.
Personnel : Bandopadhyay UK, Santha Kumar MV
Project Period :1999-2004
Objectives :To develop integrated management package for white fly.
Results/Recommendations :
· Forewarning calendar for whitefly in 3 traditional districts were developed.
· Crop loss due to whitefly infestation was estimated as 1640 kg/ha/crop.
· Economic threshold level for whitefly was estimated as 20/plant.
· As a mechanical control measure yellow sticky traps (2’ x 1') at 60/acre suppresses the population to an extent of 30%.
· As a botanical control measure spray of 1% Neem oil (1500 ppm azadarichtin) is recommended with a safe period of 14 days.
· As a chemical control measure spray of 0.1% dichlorvos is recommended with a safe period of 14 days.
· As a biological control measure release of 500 pairs of Brumoides suturalis is recommended.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Silk Technology
Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Coordinated studies on the effect of drying and preservation and pre-steaming on reeling characters of cocoons.
Personnel : Choudhury SK, Sengupta D, Dutta AK
Project Period :1981-1982
Objectives :To investigate the effect of pre-steaming of preserved cocoons either intermittently dried or without intermittently dried.
Results/Recommendations :There is no significant difference in any of the treatment viz., effect of pre-steaming of intermittently oven dried cocoons, pre-steaming of unintermittently dried cocoons in terms of renditta and reelability.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on drying and preservation of mulberry cocoons.
Personnel : Choudhury SK, Sengupta D, Dutta AK
Project Period :1981-1983
Objectives :To investigate the effect of intermittent and without intermittent sun drying and oven drying of cocoons.
Results/Recommendations :Oven drying is advantageous over sun drying in terms of renditta and reelability. Intermittent drying both in case of sun drying or oven drying has significant improvement over normal drying.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on steaming effect on flossy and deflossed cocoons.
Personnel : Choudhury SK, Sengupta D, Dutta AK
Project Period :1981-1983
Objectives :To observe the cooking and reeling performances of deflossed and undeflossed cocoons.
Results/Recommendations :Steaming of flossy cocoons prior to cooking has been found to be the best in comparison to other treatment viz., flossy without steaming, deflossed with and without steaming in terms of renditta and reelability.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on the effect of reeling water on cooking and reeling.
Personnel : Choudhury SK, Lamba PS
Project Period :1981-1982
Objectives :To study the effect of water on reeling efficiency and raw silk yield.
Results/Recommendations :
· The total hardness of water taken for the experiment ranged from 22.6 to 57.6 ppm.
· Results reveal that lower degree of hardness of water in reeling helps yielding more raw silk with better reeling efficiency.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Quality tests of cocoons of improved bivoltine and multivoltine races or combinations.
Personnel :Sengupta D, Dutta AK, Manna SS
Project Period :1983-1986
Objectives :To test the qualitative and quantitative characters of commercially available multivoltine, bivoltine races in West Bengal.
Results/Recommendations :Perusal of the data reveals that average renditta and reelability of BV; BV x BV; MV x BV and multi are 8.5, 8.7, 11.4, 11.5 and 62.5, 61.5, 56 and 58% respectively. Bivoltine cocoons have been found to be qualitatively superior over others in terms of evenness, neatness and cleanness.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on indirect sun drying as compared to oven drying, sun drying and undried cocoons.
Personnel : Sengupta D, Dutta AK, Manna SS
Project Period :1983-1985
Objectives :To assess the comparative reeling performances of sun dried , indirect sun dried and oven dried cocoon.
Results/Recommendations :Indirect sun drying i.e., sun drying through black cloth has shown better performance over direct sun drying and almost at par with oven drying.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on comparative performance of reeling bivoltine and multivoltine cocoons on different reeling machines.
Personnel : Sengupta D, Dutta AK, Manna SS
Project Period :1986-1990
Objectives : To standardize the use of reeling machine according to cocoon quality.
Results/Recommendations :It has been observed that bivoltine cocoon is suitable for multi end reeling machine whereas multi and multi x bi cocoons have been found to be suitable for charkha and cottage basin respectively.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Studies on drying and storage of reeling cocoons.
Personnel : Sengupta D, Dutta AK, Manna SS
Project Period :1986-1992
Objectives :To find out the optimum period for storing of cocoons.
Results/Recommendations :Perusal of the data reveals that cocoons can be preserved upto 20 days without any intermediate drying and from 20 days upto a optimum period of 60 days preservation with intermittent drying can be done without quality deterioration, storage of completely oven dried cocoons in HDPE bags has also found to be advantageous in comparison to thin layer storage in trays and storage in Hessian bags.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Development of water correction kit for cooking and reeling with reference to water of the states of the eastern region.
Personnel : Sengupta D, Chakraborty A, Patil MG
Project Period :1987-1995
Objectives :To develop a water correction kit for easy measurement of hardness of water suitable for individual reelers.
Results/Recommendations :A suitable kit has been developed using which an individual reeler can test the hardness of reeling water spending an approximate amount of 50 paise per sample only.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Designing of reeling machine suitable for West Bengal condition to reel N, N x G and N x Bi cocoons.
Personnel : Sengupta D, Manna SS, Dutta AK
Project Period :1988-1995
Objective :Fabrication of an economic reeling machine suitable to West Bengal condition for better yarn quality and higher reeling efficiency.
Results/Recommendations :The project is completed to the extent of laboratory trials. The first fabricated model shows considerable improvement over Ghosh reeling machine as for as productivity and quality of yarn is concerned. A final economic model is to be fabricated for subsequent field trial.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Development of cocoon drying chamber suitable for West Bengal condition.
Personnel : Sengupta D, Dutta AK, Manna SS
Project Period :1989-1995
Objectives :Fabrication of low cost cocoon drying chamber suitable for West Bengal condition.
Results/Recommendations :In the beginning a baking chamber has been fabricated which was found to be very much effective for killing of pupae only. In the later phase two numbers of cocoon drying chambers having capacity of 4 kg and 15 kg of drying have been fabricated and laboratory trials show their satisfactory performance. A final model of 15 kg, which will be suitable for individual reelers, will be fabricated for subsequent field trial.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Extension
Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Development of management packages for different types of sizes of sericultural farms.
Personnel : Das KK, Sahu PK, Das NK, Nair BP, Nagina R
Project Period :1991-1996
Objectives :
· To identify, analyze and compare the existing pattern of resources allocation along with return.
· To study the relative efficiency of different inputs in the production process for different groups of farmers as well as for the district at their present level of use.
Results/Recommendations :Farm level data from 935 sericultural farmers have been collected covering all the sericultural districts of West Bengal. Bivariate distribution of net return from sericulture according to different family size and size of mulberry holding depicts a distinctly inverse relationship between size of holding and productivity. Analysis of data from three major sericultural districts (Malda, Murshidabad and Birbhum - 650 farmers) has identified expenditure on organic manures. Nitrogenous fertilizers, irrigation, number of dfls used, labour days used (both for moriculture and sericulture) etc. as the major factors to contribute towards productivity in the farmers level while allocating his limited resources, a farmer should give proper attention towards these input factors for maximizing his net return.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Study on the level of technology adoption among different groups of farmers with special reference to traditional sericultural zones of West Bengal.
Personnel : Gupta BK, Biman Deb, Gupta YK
Project Period :1993-1997
Objectives :
· To identify a gap between lab and land in different groups of farmer.
· To identify a constraints pertaining to moriculture and sericulture.
· To evolve of viable extension package for different groups of farmers.
Results/Recommendations :A survey was done in three traditional (Malda, Murshidabad and Birbhum) and two non-traditional sericulture district (Midnapur and Nadia) of West Bengal collected different information on sericulture performance, of different district of West Bengal (mulberry area, cocoon yield/yr, number of rearers) and district level performance of sericultural crops (mulberry area/rearer, cocoon yield/rearer/yr, cocoon yield/acre/yr, number of rearer/extension unit, mulberry area/extension unit and cocoon yield/extension unit). Study also identified the package for mulberry sericulture under irrigated condition.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :A study on factors influencing sericultural productivity.
Personnel :Das KK, Das NK, Sarkar J
Project Period :1996-2000
Objectives :To estimate the extent to which various factors influence the productivity in sericulture and to prioritize items influencing yield and suggest a suitable plan for resource allocation.
Results/Recommendations :The study reveals that though there is wider variation in socioeconomic set up, the farming community has a universal feature regarding irrationality in application of input factors in the production process. The sericultural households, in general, have a number of social and cultural rituals with resource crunch situation in the back up of their mind. Often, the fund (which is meager) for particular crop enterprise has to be diverted towards many social obligations round the year. Possibly, all these compel the farming household to allocate the capital in hand irrationally. While allocating the land under mulberry, it should be kept in mind that like agriculture, negative relations between size and productivity prevails also in sericulture. On an average, mulberry garden of 0.80-0.90 acre in Birbhum, maximum upto 1.0 acre in Malda upto 0.30-0.40 acre in Murshidabad districts of West Bengal, 1.0-2.0 acre in Bihar, about 1.0-1.5 acre in Orissa, above 1.0 acre in Assam is found to be reasonable in respect of maximum productivity.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Updation and assessment of package of practices for mulberry sericulture and transfer.
Personnel :Sengupta D, Setna M, Ghosh S, Roy I, Datta (Biswas) T, Pal NB, Chatterjee S
Project Period :2001-2004
Objectives :
· Qualitative and quantitative improvement in mulberry leaf and cocoon production through an improved comprehensive package in a compact form having all the improved low cost technologies.
· To update the package of sericulture with new technological inputs and appraise the farmers.
· To conduct on farm technology assessment and demonstration programme at farmer's field with active participation of field functionaries of DOS units.
· To improve soil health, eco-friendly environment and profitability.
Results/Recommendations :
· Integrated approach of using improved mulberry variety (S1635), 60 cm x 60 cm spacing, application of biofertilizers (Nitrofert and Phosphofert), growth regulator along with reduced dose of chemical fertilizers and necessary control measures for white fly infestation was potential for maximization of leaf productivity and quality along with the reduction in the cost of cultivation and maintenance of soil health. Besides, the comprehensive package for silkworm rearing was also found to be effective in increasing the cocoon yield and quality. Therefore, the improved package considered for the project was proved to be potential, profitable and sustainable for mulberry sericulture and also effective for both qualitative and quantitative improvement of mulberry leaf and cocoon and hence this package on such may be recommended to the farmers for large-scale implementation.
· The annual expenditure for mulberry leaf production in one hectare of land with improved and traditional package were estimated as Rs.56,650 and Rs.60,028 respectively and thus an amount of Rs.3378/ha/yr (5.9%) could be saved through the use of improved packages. Moreover the yield and quality of mulberry leaves were significantly increased in improved package over traditional package. Further an additional leaf yield of 4,955 kg/ha/yr could be obtained and thereby Rs.7,433 could also be earned by selling the additional leaves at Rs.1.50/kg or an additional 500-600 MV x BV dfls could be reared out of these additional leaves.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :A study on input resources management for farmers having sericulture as one of the major crops.
Personnel : Das NK, Chatterjee S, Pal NB
Project Period :2001-2004
Objectives :
· To analysis and compare the existing allocation of resources, cropping pattern, productivity and associated levels of income and employment under existing production plan.
· To develop farming models for rational allocation of resources in case of multiple cropping patterns.
· To identify the nature and extent of constraints coming in the way of complete adoption of recommended package of practices.
Results/Recommendations :The study reveals poor educational background of the families (mostly upto primary only) and also low level of extension contact which is indication of probability of rather low level of "thickling down" of improved package of practices. Out of total land holding of the sample farmers, about 68-79% is allocated for agricultural crops leaving 21-30% for mulberry garden.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Study on farmers characteristics and adoption behaviour with reference to sericulture technologies in West Bengal.
Personnel : Pandit D, Ghosh S, Roy TN
Project Period :2001-2003
Objectives :
· To identify the characteristics of different categories of sericultural farmers.
· To determine the level of adoption of newly evolved sericultural technologies.
· To study the factors influencing the adoption of technologies and suggested suitable remedial measure.
Results/Recommendations :
· Out of six technologies, only two technologies have good acceptance at all categories of farmer. These are “Improved mulberry variety” and silkworm crop protection measure by using labex.
· Extensive awareness and training programme, farmers participatory programme, strengthening of support system, development of economic motivation and competitiveness by assuring reasonably good financial return are some of the suggestive measure to overcome the constraints.
· Thus, technology required to be developed keeping in view of the socio-psycho-economic status of the marginal sericultural farmers due to their absolute dominance in the sericulture farming community.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :A study on yield gap in sericulture between laboratory recommendation and field performance in West Bengal.
Personnel : Pandit D, Das NK, Ghosh S
Project Period :2002-2003
Objectives :
· To explore differential socio-economic set up of the sericultural farmers.
· To assess the magnitude of 'yield gap' in sericulture at farmers level.
· To examine the nature of variation in 'yield gap' across different socio-economic strata of the sericultural farmers.
· To identify techno-socio-economic factors responsible behind such yield gap.
· To suggest possible option(s) for reducing the gap.
Results/Recommendations :The study revealed that the marginal farmers are predominant in the sericultural community. The overall socio-economic status of the three observed categories namely marginal, small and semi-medium farmers were found to be very poor considering the variables like education, social participation, occupation, cosmopolite ness, size of the holding, mulberry holding and it was much more pronounced in the case of marginal farmers, who constitute about 85% of the total sericultural farmers.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :A study on impact of specialized training for extension Personnel in dissemination of improved sericultural technologies.
Personnel : Mukherjee PK, Das NK, Maji C
Project Period :2002-2004
Objectives :To locate the strength and weakness in the present system of aforesaid training programmes and suggest suitable changes (if necessary) for better functioning in future.
Results/Recommendations :Most of the Extension-trainees were found to still excellently remember every point of the courses they attended, readily possess the study material and implement in the field as far as practicable. Few of them (14%) have been found not to have any scope of implementation of the knowledge they gained some of them felt that problem of following the lectures in English. All participants for the course "practical on soil testing”. The burning problem on which most of them wanted to get trained at this Institute is on white fly menace. Motivation of farmers in another specific topic of extension methodologies on which field level officials intend to learn. Management of labour workforce is the subject on which few supervisory level staff members of DOS intend to get trained. Some farmer-cum-reelers want to be trained in effectively reeling warp in Katghai, if possible.
Some new need based items of course suggested by extension personnel:
· Low cost sericultural practice for quality silk output.
· Complete grainage operation with emphasis on seed management and microscopic examination.
· Tree system mulberry cultivation in red-laterite zone.
· Intercropping in adverse seasons.
· Sericulture project preparation.
· Rearing of bivoltine seed crop during Ashwina.
· Motivation of farmers in traditional area with emphasis in communication techniques.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Projects with incomplete/partial information
Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Mulberry germplasm evaluation in relation to quality, quantity and stress resistance.
Personnel : Ghosh PL, Das BK, Sau H
Funding Source :CSB, Bangalore
Project Period :2000-2005
Objectives :To characterize the mulberry germplasm resource and evaluating the qualitative and quantitative characters to use them in future breeding programme for overall improvement.
Results/Recommendations :Incomplete
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :To find out the best schedule of pruning in bush mulberry under rainfed and irrigated conditions.
Personnel :N.A.
Project Period :1980
Results/Recommendations :Discontinued.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Experiment on package of practices.
Personnel :N.A.
Project Period :1980-1981
Results/Recommendations :Discontinued.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Control of mulberry diseases through botanicals and bio control agents.
Personnel : Maji MD, Chattopadhyay S, Pratheesh Kumar PM, Gangwar K
Project Period :1998-2003
Objectives :
· To identify the plant extracts well suited for the control of important mulberry diseases.
· To identify the plant associated microorganisms antagonistic to mulberry pathogens.
· To standardize isolation and multiplication of microorganisms antagonistic to mulberry pathogens.
Results/Recommendations :No result
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Comparison of rearing performance in different types of trays i.e., twin trays and masonary board trays.
Personnel :Paul DC, Mathur SK, Pramanik DR, Kishore Kumar CM, Roychoudhury N, Basu R
Project Period :1988-1989
Objectives :To study the rearing performance using different rearing trays.
Results/Recommendations :No significant result was observed.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Organization :Central Sericultural Research and Training Institute, Berhampore
Project Title :Induction of tri-moulting in bivoltine silkworm by physiological active chemicals and their utilization as male parent for multi x bi hybrid preparation.
Personnel : Saha AK, Datta (Biswas) T, Das SK
Project Period :2002-2005
Objectives :
· Reduction of larval period by inducing tri-moulting in bivoltine silkworm to shorter the larval period during adverse climatic season through chemicals having anti-juvenile hormone activity for raising successful bivoltine seed cocoon crop during difficult.
· Use of induced bivoltine trimoulters as male parent for MV x BV hybrid preparation.
Source of Information :Research Compendium of CSR&TI, Berhampore
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Project No.:CSB
Project Title :Studies on the occurrence of diseases and mortality of silkworms due to variation in periods of egg laying.
Project Period :1973-1975
Personnel :Saha Kundu AK, Mondal KC
Objectives :To study the effect of variation in periods of egg laying on diseases and mortality of silkworm.
Results/Recommendations :There was no effect.
Source of Information :Research Compendium of CSR&TI, Berhampore
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