2013 Fiscal Year Final Research Report
Development a soybean crop model to support production under converted lowland paddies
| Project/Area Number |
22380014
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Crop science/Weed science
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
SHIMADA Shinji 農研機構, 中央農業研究センター, 主任研究員 (30355309)
TANAKA Tomoyuki 京都大学, 大学院・農学研究科, 准教授 (50224473)
HOMMA Koki 京都大学, 大学院・農学研究科, 講師 (60397560)
KATSURA Keisuke 京都大学, 大学院・農学研究科, 助教
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| Co-Investigator(Renkei-kenkyūsha) |
KAWAMURA Hisanori 滋賀県, 農業技術振興センター, 主任技師
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | ダイズ / 生育モデル / 転換畑 / 土壌水分 / 収量 |
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| Research Abstract |
This study attempted to develop a crop model for soybean that can be applied to predict crop performance under excess soil moisture condition. To a previously published model (Sinclair, 1986), a module of developmental stages was incorporated. For developing a module of crop response to excess water, two series of controlled experiments were conducted. One was for determination of N fixation response to waterlogging as affected by soil temperature and redox potential. Another was for leaf-growth response to excess water that revealed a common pattern of the leaf-growth response under varied temperature condition. The field experiments conducted on a field facilitated with the system for controlling underground water level and a data-set of crop responses in biomass and N accumulation and seed yield was developed. A preliminary model that accounts for reduction of leaf area development due to excess water was applied to the data from the field experiments.
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[Presentation] Biomass production and yield of soybean grown under optimum condition and with excess water during early growth stage
Author(s)
Bajgain, R., Kawasaki, Y., Akamatsu, Y., Tanaka, Y., Kawamura, H. and Shiraiwa, T
Organizer
日作紀81(別1)
