Crop Science Laboratory, Faculty of Agriculture and Marine Science, Kochi University

研究課題 Research topics

最近の研究業績　Recent academic achievements

Kamal Shrestha, Akira Miyazaki, Daisuke Yoshii, Mitsukazu Sakata and Naoki Moritsuka 2024. Effect of localized fertilizer application on deep root development during early growth in upland rice under upland condition. Plant Production Science 27(3): 240–252.  https://doi.org/10.1080/1343943X.2024.2376296

Joji Miyazawa and Akira Miyazaki 2023. Furrow Sowing Effects on Soil Moisture Content and Yield of Rainfed Upland Rice in Benin, West Africa. Tropical Agriculture and Development 67(4): 110 -120.

Namal Rathnayake, Akira Miyazaki, Tuan Linh Dang, and Yukinobu Hoshino 2023. Age classification of rice seeds in Japan using gradient-boosting and ANFIS algorithms. Sensors, 23, 5, MDPI https://doi.org/10.3390/s23052828

Mamoru Tanaka, Ayaka Koida, Akira Miyazaki, Kazushi Tabata, Yuichiro Takei, Yoshihumi Tanimoto, Mami Kawamura, Masafumi Tsuzuki, Haruka Takahashi, Tetsu Yano, and Hiroyuki Watanabe 2023. Canna starch improves immune functions and the intestinal environment in mice. Bioscience of Microbiota, Food and Health, https://www.jstage.jst.go.jp/article/bmfh/advpub/0/advpub_2022-068/_pdf/-char/en

Yoshinori Yamamoto, Ayumi Ochi, Isamu Yanagidate, Hiroto Ishima, Tetsushi Yoshida, Fransiscus Suramas Rembon, Yulius Barra Pasolon, Engelbert Manaroisong, Christffelk Sayangbati, Ronny Bernard Maliangkay, Elsje Tenda, and Akira Miyazaki 2022. Changes in the Leaf Characteristics and Biomass with Plant Age of ‘Sagu Baruk’ (Arenga microcarpa Becc.) on Sangihe Island, North Sulawesi, Indonesia. Tropical Agriculture and Development, 66 (3): 95-103.

Joji Miyazawa and Akira Miyazaki 2022. Analysis of Farming Practices through Soil Moisture and Sowing Date Adjustment of Rainfed Rice Cultivation in Central Benin, West Africa. Tropical Agriculture and Development 66(4): 130 -138.

Akira Miyazaki and Kamal Shrestha 2021. Introduction of Microscopic Observation. In: Development of Core Agricultural Researchers for the Promotion of Rice Production in Sub-Sahara Africa (Ehara, H. and Kano-Nakata, M. prod.). Vol. 10. JISNAS & JICA. https://jisnas.com/document/list/download.html

Akira Miyazaki and Kamal Shrestha 2021. Microscopic Observation: Hand Sectioning Method. In: Development of Core Agricultural Researchers for the Promotion of Rice Production in Sub-Sahara Africa (Ehara, H. and Kano-Nakata, M. prod.). Vol. 11. JISNAS & JICA. https://jisnas.com/document/11_Hand_sectioning.mp4

Akira Miyazaki and Kamal Shrestha 2022. Morphological Observation: Microtome Sectioning Method. In: Development of Core Agricultural Researchers for the Promotion of Rice Production in Sub-Sahara Africa (Ehara, H. and Kano-Nakata, M. prod.). Vol. 12. JISNAS & JICA. https://jisnas.com/document/12_Microtome_sectioning_R.mp4

Akira Miyazaki, Kamal Shrestha and Naoki Moritsuka 2021. Soil Analysis: pH and EC. In: Development of Core Agricultural Researchers for the Promotion of Rice Production in Sub-Sahara Africa (Ehara, H. and Kano-Nakata, M. prod.). Vol. 17. JISNAS & JICA. https://jisnas.com/document/17_Soil_analysis_pH_and_EC_R.mp4

Akira Miyazaki, Kamal Shrestha, Yasuyo Nishimura and Naoki Moritsuka 2022. Soil Analysis: CEC (Cation Exchange Capacity). In: Development of Core Agricultural Researchers for the Promotion of Rice Production in Sub-Sahara Africa (Ehara, H. and Kano-Nakata, M. prod.). Vol. 18. JISNAS & JICA. https://jisnas.com/document/18_Soil_analysis_of_CEC_R.mp4

Yoshinori Yamamoto, Ayumi Ochi, Isamu Yanagidate, Hiroto Ishima, Tetsushi Yoshida, Fransiscus Suramas Rembon, Yulius Barra Pasolon, Engelbert Manaroisong, Christffelk Sayangbati, Ronny Bernard Maliangkay, Elsje Tenda, and Akira Miyazaki 2022. Growth Characteristics and Starch Productivity of ‘Sagu Baruk’ (Arenga microcarpa Becc.) on Sangihe Island, North Sulawesi, Indonesia. Tropical Agriculture and Development 66(1)：12-20.

Yoshinori Yamamoto, Tetsushi Yoshida, Hiroto Ishima, Tomomi Yoshida, Manselinus, Yulius Barra Pasolon, Fransiscus Suramas Rembon, Engelbert Manaroisong, Christffelk Sayangbati, Ronny Bernard Maliangkay, Elsje Tenda and Akira Miyazaki 2021. Changes in Biomass with the Plant Age of Sugar Palm (Arenga pinnata Merr.) Grown in Tana Toraja, South Sulawesi, and Tomohon, North Sulawesi, Indonesia. SAGO PALM 29(2): 63-74.

Yoshinori Yamamoto, Hiroto Ishima, Tetsushi Yoshida, Fransiscus Suramas Rembon, Namriah, Satoru Kawamura, Pranamuda Hardaning, Yusuf Sigit Ahmed Fauzan, Nadirman Haska, Ayumi Ochi, and Akira Miyazaki 2021. Leaf Characteristics and Biomass of Gebang Palms (Corypha utan Lamk.) Grown in Kupang, East Nusa Tenggara, and on Muna Island, Southeast Sulawesi, Indonesia. Tropical Agriculture and Development 65(4)：177-184.

Akira Miyazaki, Yukari Shiino, Hiroshi Hayakawa, Yoshito Ohtani, Yoshinori Yamamoto, 2021. Genetic variations of rhizome yield, essential oil content and constituents in Curcuma species and strains. 10th Asian Crop Science Association Conference, Online Japan, 8-10 September, 2021.

Joji Miyazawa and Akira Miyazaki 2021. Climate impact on yield and cultivation area of rainfed rice in Central Benin, West Africa. 10th Asian Crop Science Association Conference, Online Japan, 8-10 September, 2021.

Yoshinori Yamamoto, Tetsushi Yoshida, Hiroto Ishima, Tomomi Yoshida, Manselinus, Yulius Barra Pasolon, Fransiscus Suramas Rembon, Engelbert Manaroisong, Christffelk Sayangbati, Ronny Bernard Maliangkay, Elsje Tenda and Akira Miyazaki 2021. Growth characteristics and starch productivity of sugar palms (Arenga pinnata Merr.) in Tana Toraja, South Sulawesi, and Tomohon, North Sulawesi, Indonesia. SAGO PALM 29(1): 25-38.

Yoshinori Yamamoto, Satoru Kawamura, Hiroto Ishima, Tetsushi Yoshida, Pranamuda Hardaning, Yusuf Sigit Ahmed Fauzan, Nadirman Haska, Fransiscus Suramas Rembon, Namriah, Ayumi Ochi, and Akira Miyazaki 2021. Growth characteristics and starch productivity of Gebang Palms (Corypha utan Lamk.) grown in Kupang, Nusa Tenggara and on Muna Island, Southeast Sulawesi, Indonesia. Tropical Agriculture and Development 65 (3): 153-162.

Akira Miyazaki, Yukari Shiino, Yoshito Otani and Yoshinori Yamamoto 2021. Changes in the amounts and constituents of essential oils during Curcuma species growth. Tropical Agriculture and Development 65(3): 138-145.

Joji Miyazawa and Akira Miyazaki 2021. Sowing rice in furrows and its effect on soil moisture and seedling emergence under rainfed conditions in Benin, West Africa.  Tropical Agriculture and Development 65 (3): 125-131.

Yoshinori Yamamoto, Satoru Kawamura, Isamu Yanagidate, Tetsushi Yoshida, Tomofumi Ichimaru, Yulius Barra Pasolon, Fransiscus Suramas Rembon, Antony Dapang Pasulu, and Akira Miyazaki 2021. Growth characteristics and starch productivity of sugar palms (Arenga pinnata Merr.) grown on Muna Island, Southeast Sulawesi, Indonesia. Tropical Agriculture and Development 65 (2): 97-109.

Yoshinori Yamamoto, Satoru Kawamura, Tomofumi Ichimaru, Yulius Barra Pasolon, Antony Dapang Pasulu, Tetsushi Yoshida and Akira Miyazaki 2021. Sap collection from sugar palms (Arenga pinnata Merr.) on Muna Island, Southeast Slawesi, Indonesia. Tropical Agriculture and Development 65 (2): 75-83.

Y. Yamamoto, N. Takemori, F. S. Rembon, T. Yoshida, Y. Randongkir, H. Matanubun, and A. Miyazaki 2021. Changes in the Biomass Production of the Sago Palm (Metroxylon sagu Rottb.) with Age in the Natural Forest of South Sorong, West Papua, Indonesia. Tropical Agriculture and Development 65(1): 17-28.

Y. Yamamoto, I. Yanagidate, T. Yoshida, A. Miyazaki, Y. B. Pasolon, S. Darmawanto, J. Limbongan, F. S. Jong, A. F. Irawan, and A. A. Arsy 2020. Characteristics of Growth and Starch Productivity of Wild Sago Folk Variety ‘Manno’ Grown near Jayapura, Papua, Indonesia. Tropical Agriculture and Development 64(3): 135-145.

Y. Yamamoto, T. Yoshida, I. Yanagidate, F. J. Polonaya, W. A. Siahaya, F. S. Jong, Y. B. Pasolon, A. Miyazaki, T. Hamanishi, and K. Hirao 2020. Studies on Growth Characteristics and Starch Productivity of the Sago Palm (Metroxylon sagu Rottb.) Folk Varieties in Seram and Ambon Islands, Maluku, Indonesia. Tropical Agriculture and Development 64(3): 125-134.

Y. Yamamoto, K. Katayama, T. Yoshida, A. Miyazaki, F. S. Jong, Y. B. Pasolon, H. Matanubun, F. S. Rembon, Nicholus, and J. Limbongan 2020. Changes in Leaf and Trunk Characteristics Related to Starch Yield with Age in Two Sago Palm Folk Varieties Grown near Jayapura, Papua, Indonesia. Tropical Agriculture and Development 64(2): 61-71.

Yamamoto, Y., I. Yanagidate, T. Yoshida, H. Pranamuda, Y. S. A. Fauzan, U. E. Suryadi, Y. Indrayani, A. Miyazaki, and N. Haska 2020. Growth Characteristics and Starch Productivity of Sago Palm (Metroxylon sagu Rottb.) Grown in Pontianak, West Kalimantan, Indonesia. Sago Palm 28: 12-21.

Yamamoto, Y., K. Omori, F. S. Jong, and A. Miyazaki 2020. Methods for Estimating the Leaf Area of Sago Palm (Metroxylon sagu Rottb.). Sago Palm 28: 1-4.

Yoshinori Yamamoto, Isamu Yanagidate, Akira Miyazaki, Tetsushi Yoshida, Albertus Fajar Irawan, Yulius Barra Pasolon, Foh Shoon Jong, Hubertus Matanubun, Aysyah Anas Arsy and Jermia Limbongan　2020. Growth Characteristics and Starch Productivity of Folk Varieties of Sago Palm around Lake Sentani near Jayapura, Papua State, Indonesia. Tropical Agriculture and Development 64(1): 23-33.

Akira Miyazaki & Naoya Arita 2020. Deep rooting development and growth in upland rice NERICA induced by subsurface irrigation. Plant Production Science 23(2): 211–219. https://www.tandfonline.com/doi/pdf/10.1080/1343943X.2020.1732829?needAccess=true

Mayumi Kikuta, Daigo Makihara, Naoya Arita, Akira Miyazaki & Yoshinori Yamamoto 2019. Effects of different water management practices on the dry matter production process and characteristics in NERICAs. Plant Production Science 22(2): 168-179. 

Yuta Tsunemitsu, Mayuko Genda, Tomoyuki Okada, Naoki Yamaji, Jian Feng Ma, Akira Miyazaki, Shin-ichiro Kato, Kozo Iwasaki & Daisei Ueno 2018. A member of cation diffusion facilitator family, MTP11, is required for manganese tolerance and high fertility in rice. Planta 248: 231-241.

Asia Arifin, Rinaldi Sjahril, Muhammad Riadi, Naoya Arita & Akira Miyazaki 2018. Root morphological characters at several distances from irrigated trench in rice varieties grown under rain-fed conditioned plots. International Journal of Agriculture System 6(1): 82-88.

Akira Miyazaki, Akiko Ikeda, Junichi Yonemaru, Satoshi Morita & Yoshinori Yamamoto 2018. Relationships among the chalkiness, kernel size and endosperm cell morphology of rice kernels at different spikelet positions within a panicle. Plant Production Science 21(3): 225-232.