Improvement of Soybean Yield Potential in the Monsoon Asia

2014 Fiscal Year Final Research Report

• Project/Area Number: 22248001
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Crop science/Weed science
• Research Institution: Okayama University
• Principal Investigator: SAITOH Kuniyuki 岡山大学, その他の研究科, 教授 (60153798)
• Co-Investigator(Kenkyū-buntansha): KOKUBUN Makie 東北大学, 大学院農学研究科, 教授 (40323084) ; SHIMADA Shinji 独立行政法人農業・食品産業技術総合研究機構, 中央農業総合研究センター, 領域長 (30355309) ; SHIRAIWA Tatsuhiko 京都大学, 大学院農学研究科, 教授 (30154363) ; ZHENG Shao-Hui 佐賀大学, 農学部, 教授 (90253517) ; ISOBE Katsunori 日本大学, 生物資源科学部, 准教授 (60203072)
• Project Period (FY): 2010-04-01 – 2015-03-31
• Keywords: ダイズ / 多収事例 / 収量ポテンシャル / 乾物生産 / 葉面積指数 / 密植栽培 / 倒伏抵抗性 / 機械収穫ロス

Outline of Final Research Achievements

Bibliographic survey of high-yielding soybean cultivation in Japan revealed that the higher yield potential 786-595 kg/10a were observed. High-yielding trials were practiced at six sites across country, and 496-229 kg/10a were obtained. For the higher yield in soybean, it is essential to achieve the higher dry matter production with more than 10 of LAI under rich solar radiation during seed filling period. To increase the national average of soybean yield, enforcing the basic cultural techniques and decreasing the mechanical harvesting losses mainly caused by lodging are needed.

Free Research Field

作物学