Crop file format
You can copy this sample file to create your own crop file. Just change the values, then copy and paste as an ordinary text file.
**********************************************************************
* Crop data file for ORYZA rice growth model *
* Variety : <provided by user> *
* File name : STANDARD.CRP *
* <Information of user's reference> *
**********************************************************************
*---------------------------------------------------------------------
* 1. Phenological development parameters
*---------------------------------------------------------------------
TBD = 8. ! Base temperature for development (oC)
TBLV = 8. ! Base temperature for juvenile leaf area growth (oC)
TMD = 42. ! Maximum temperature for development (oC)
TOD = 30. ! Optimum temperature for development (oC)
DVRJ = 0.0006560 ! Development rate in juvenile phase (oCd-1)
DVRI = 0.0007576 ! Development rate in photoperiod-sensitive phase (oCd-1)
DVRP = 0.0006810 ! Development rate in panicle development (oCd-1)
DVRR = 0.0023510 ! Development rate in reproductive phase (oCd-1)
MOPP = 11.50 ! Maximum optimum photoperiod (h)
PPSE = 0.0 ! Photoperiod sensitivity (h-1)
SHCKD = 0.4 ! Relation between seedling age and delay in phenological
! development (oCd-1)
*---------------------------------------------------------------------
* 2. Leaf and stem growth parameters
*---------------------------------------------------------------------
RGRLMX = 0.0085 ! Maximum relative growth rate of leaf area (oCd-1)
RGRLMN = 0.0040 ! Minimum relative growth rate of leaf area (oCd-1)
SHCKL = 0.25 ! Relation between seedling age and delay in leaf area
! development (oCd-1)
SHADET = 0.90 !* Tolerance index to shading with value 0.1 to 0.99
!* from susceptible to high tolerance, default
!* is 0.5 to indicate fair tolerance.
* Switch to use SLA as table (give values below) or as fixed function
*SWISLA = 'FUNCTION' ! Give function parameters ASLA, BSLA, CSLA, DSLA,
! SLAMAX
SWISLA = 'TABLE' ! Give SLA as a function of DVS in the table SLATB
* If SWISLA='FUNCTION', supply SLA function parameters:
* SLA = ASLA + BSLA*EXP(CSLA*(DVS-DSLA)), and SLAMAX
ASLA = 0.0024 ! (-)
BSLA = 0.0025 ! (-)
CSLA = -4.5 ! (-)
DSLA = 0.14 ! (-)
SLAMAX = 0.0045 ! Maximum value of SLA (ha/kg)
* If SWISLA='TABLE', supply table of specific leaf area (ha kg-1; Y value)
* as a function of development stage (-; X value):
SLATB = 0.00, 0.0045,
0.16, 0.0045,
0.33, 0.0033,
0.65, 0.0028,
0.79, 0.0024,
2.10, 0.0023,
2.50, 0.0023
* Table of specific green stem area (ha kg-1; Y value) as a function of
* development stage (-; X value):
SSGATB = 0.0, 0.0003,
0.9, 0.0003,
2.1, 0.0000,
2.5, 0.0000
*---------------------------------------------------------------------
* 3. Photosynthesis parameters
*---------------------------------------------------------------------
FRPAR = 0.5 ! Fraction of sunlight energy that is
! photosynthetically active (-)
SCP = 0.2 ! Scattering coefficient of leaves for PAR (-)
CO2REF = 340. ! Reference level of atmospheric CO2 (ppm)
CO2 = 385. ! Ambient CO2 concentration (ppm)
* Table of light extinction coefficient for leaves (-; Y-value) as a function
* of development stage (-; X value):
KDFTB = 0.00, 0.4,
0.65, 0.4,
1.00, 0.6,
2.50, 0.6
* Table of extinction coefficient of N profile in the canopy (-; Y-value)
* as a function of development stage (-; X value):
KNFTB = 0.0, 0.4,
0.65,0.4,
1.00,0.4,
2.5, 0.4
* Table of light use efficiency (-; Y-value) as a function of
* temperature (oC; X value):
EFFTB = 0.,0.54,
10.,0.54,
25.,0.54,
40.,0.36,
60.,0.24
* Table of effect of temperature on AMAX (-; Y-value) as a function of
* temperature (oC; X value):
REDFTT = -10., 0.,
10., 0.,
20., 1.,
37., 1.,
43., 0.,
60., 0.
* Table of N fraction in leaves on leaf area basis (g N m-2 leaf; Y-value)
* as a function of development stage (-; X value):
NFLVTB = 0.00, 0.54,
0.16, 0.54,
0.33, 1.53,
0.65, 1.22,
0.79, 1.56,
1.00, 1.29,
1.46, 1.37,
2.02, 0.83,
2.50, 0.83
AMAXSLN0 = 22.0 !* Leaf nitrogen content corresponding
!* coefficient to AMax (g N/m-2 leaf))
MINSLN = 0.2 !* Minimum leaf nitrogen content for that
!* Am (maximum rate CO2 assimilation) is 0.0 (g N/m2 leaf)
*---------------------------------------------------------------------
* 4. Maintenance parameters
*---------------------------------------------------------------------
* Maintenance respiration coefficient (kg CH2O kg-1 DM d-1) of:
MAINLV = 0.02 ! Leaves
MAINST = 0.015 ! Stems
MAINSO = 0.003 ! Storage organs (panicles)
MAINRT = 0.01 ! Roots
TREF = 25. ! Reference temperature (oC)
Q10 = 2. ! Factor accounting for increase in maintenance
! respiration with a 10 oC rise in temperature (-)
*---------------------------------------------------------------------
* 5. Growth respiration parameters
*---------------------------------------------------------------------
* Carbohydrate requirement for dry matter production (kg CH2O kg-1 DM leaf)of:
CRGLV = 1.326 ! Leaves
CRGST = 1.326 ! Stems
CRGSO = 1.462 ! Storage organs (panicles)
CRGRT = 1.326 ! Roots
CRGSTR = 1.11 ! Stem reserves
LRSTR = 0.947 ! Fraction of allocated stem reserves that is
! available for growth (-)
*---------------------------------------------------------------------
* 6. Growth parameters
*---------------------------------------------------------------------
FSTR = 0.20 ! Fraction of carbohydrates allocated to stems that
! is stored as reserves (-)
TCLSTR = 10. ! Time coefficient for loss of stem reserves (1 d-1)
SPGF = 64900. ! Spikelet growth factor (no kg-1)
WGRMX = 0.0000249 ! Maximum individual grain weight (kg grain-1)
* Partitioning tables
* Table of fraction total dry matter partitioned to the shoot (-; Y-value)
* as a function of development stage (-; X value):
FSHTB = 0.00, 0.50,
0.43, 0.75,
1.00, 1.00,
2.50, 1.00
* Table of fraction shoot dry matter partitioned to the leaves (-; Y-value)
* as a function of development stage (-; X value):
FLVTB = 0.000, 0.60,
0.500, 0.60,
0.750, 0.30,
1.000, 0.00,
1.200, 0.00,
2.5, 0.
* Table of fraction shoot dry matter partitioned to the stems (-; Y-value)
* as a function of development stage (-; X value):
FSTTB = 0.000, 0.40,
0.500, 0.40,
0.750, 0.60,
1.000, 0.10,
1.200, 0.00,
2.5, 0.
* Table of fraction shoot dry matter partitioned to the panicles (-; Y-value)
* as a function of development stage (-; X value):
FSOTB = 0.000, 0.000,
0.500, 0.000,
0.750, 0.100,
1.000, 0.900,
1.200, 1.000,
2.5, 1.
* Table of leaf death coefficient (d-1; Y-value) as a function of development
* stage (-; X value):
DRLVT = 0.00, 0.000,
0.60, 0.000,
1.00, 0.015,
1.60, 0.025,
2.10, 0.050,
2.50, 0.050
*---------------------------------------------------------------------
* 7. Carbon balance parameters
*---------------------------------------------------------------------
* Mass fraction carbon (kg C kg-1 DM) in the:
FCLV = 0.419 ! Leaves
FCST = 0.431 ! Stems
FCSO = 0.487 ! Storage organs (panicles)
FCRT = 0.431 ! Roots
FCSTR = 0.444 ! Stem reserves
*---------------------------------------------------------------------
* 8. Root parameters
*---------------------------------------------------------------------
GZRT = 0.01 ! Growth rate of roots (m d-1)
ZRTMCW = 0.25 ! Maximum depth of roots if no drought stress (m)
ZRTMCD = 0.40 ! Maximum depth of roots if drought (m)
*ADDITONAL INFORMATION since V2.13 - JUNE 2009
*SROOTL = 90.0 ! Special root length cm/g DM
RMINT = 5.0 ! Minimum temperature for root growth
ROPTT = 25.0 ! Optimum temperature of root growth
RTBS = 2.0 ! Minimum temperature for root to survive
RCNL = 0.012 ! Lowest root nitrogen content (residue root N content,
! kg N kg-1 ROOT DM)
SODT = 0.9 ! The tolerance index of oxygen deficiency
*---------------------------------------------------------------------
* 9. Temperature and drought stress parameters
*---------------------------------------------------------------------
COLDMIN = 12. ! Lower air temperature threshold for growth (oC)
COLDEAD = 3. ! Consecutive number of days below COLDMIN that crop dies (-)
COLDREP = 21. !* The threshold temperature for cold caused sterility (oC)
CTSTER = 36.5 !* The threshold temperature for heat caused sterility (oC)
* Upper and lower limits for drought stress effects
ULLS = 74.13 ! Upper limit leaf rolling (kPa)
LLLS = 794.33 ! Lower limit leaf rolling (kPa)
ULDL = 630.95 ! Upper limit death of leaves (kPa)
LLDL = 1584.89 ! Lower limit death of leaves (kPa)
ULLE = 1.45 ! Upper limit leaf expansion (kPa)
LLLE = 1404. ! Lower limit leaf expansion (kPa)
* Switch to use ULTR and LLTR as given above or function built in ORYZA
* for the reduction in relative transpiration:
* SWIRTR = 1, Use ULRT AND LLRT for transpiration; SWIRTR = 2, Use SWIRTRF
* for transpiration; SWIRTR = 3, Use FSWTD for transpiration
SWIRTR = 3 ! Use function
* Give value of ULRT and LLRT for SWIRTR = 1
ULRT = 74.13 ! Upper limit relative transpiration reduction (kPa)
LLRT = 1584.89 ! Lower limit relative transpiration reduction (kPa)
* Give value for SWIRTRF if SWIRTR= 2, default value SWIRTRF=0.003297
SWIRTRF = 0.020597
* Give value for FSWTD if SWIRTR= 3, default value SWIRTRF=0.003297
* The upper limit factor while transpiration declines which is the ratio of
* remaining available water to total water supply capability
FSWTD = 0.40
*---------------------------------------------------------------------
* 10. Nitrogen parameters
*---------------------------------------------------------------------
NMAXUP = 8. ! Maximum daily N uptake (kg N ha-1 d-1)
RFNLV = 0.004 ! Residual N fraction of leaves (kg N kg-1 leaves)
FNTRT = 0.15 ! Fraction N translocation from roots, as (additonal)
! fraction of total N translocation from stems and leaves
! (-)
RFNST = 0.0015 ! Residual N fraction of stems (kg N kg-1 stems)
TCNTRF = 10. ! Time coefficient for N translocation to grains (d)
NFLVI = 0.5 ! Initial leaf N fraction (on area basis: g N m-2 leaf)
FNLVI = 0.025 ! Initial leaf N fraction (on weight basis: kg N kg-1 leaf)
NDSENS = 0.95 !* Nitrogen deficiency sensitivity, 0.5=fair as default,
!* >0.5 tolerance, <0.5 sensitive, Value range 0.0 to 1.0
NMAXSO = 0.0175 ! Maximum N concentration in storage organs (kg N kg-1)
* Table of minimum N concentration in storage organs (kg N kg-1 DM; Y value)
* as a function of the amount of N in the crop till flowering (kg N ha-1; X
* value):
NMINSOT = 0., .006,
50., .0008,
150., .0125,
250., .015,
400., .017,
1000., .017
* Table of maximum leaf N fraction on weight basis (kg N kg-1 leaves; Y value)
* as a function of development stage (-; X value):
NMAXLT = 0.0, .053,
0.4, .053,
0.75, .040,
1.0, .028,
2.0, .022,
2.5, .015
* Table of minimum leaf N fraction on weight basis (kg N kg-1 leaves; Y value)
* as a function of development stage (-; X value):
NMINLT = 0.0, 0.025,
1.0, 0.012,
2.1, 0.007,
2.5, 0.007
*--- Table of effect of N stress on leaf death rate (-; Y value)
* as a function of N stress level (-; X value):
NSLLVT = 0., 1.0,
1.1, 1.0,
1.5, 1.4,
2.0, 1.5,
2.5, 1.5