Variable rate management for correcting the spatial variability of seed quality of wheat and soybean and realizing the sustainable crop production

2015 Fiscal Year Final Research Report

• Project/Area Number: 23380012
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Crop production science
• Research Institution: Kyoto University
• Principal Investigator: Inamura Tatsuya 京都大学, (連合)農学研究科(研究院), 教授 (00263129)
• Co-Investigator(Kenkyū-buntansha): IIDA MICHIHISA 京都大学, 大学院農学研究科, 教授 (50232129) ; SUGURI MASAHIKO 京都大学, 大学院農学研究科, 助教 (10226483)
• Project Period (FY): 2011-04-01 – 2016-03-31
• Keywords: 田畑輪換 / 精密農業 / リモートセンシング / 空間変動 / 品質 / 収量

Outline of Final Research Achievements

Sources of the variation of seed quality and yield of wheat and soybean in paddy-upland rotational fields were examined to evaluate the possibility of the variable rate management that implements the site-specific input of agricultural materials, e.g. fertilizer and seed, in proportion to the variation of these sources in the field for correcting the spatial variability of seed quality and yield. In the case of wheat, the variable seeding rate management in proportion to the soil moisture percentage on dried soil basis at seeding in the field was able to control the number of panicles in the field to bring the adequate average yield. In the case of soybean, the variable seeding rate management for controlling population density at seeding was able to control the stems structure of soybean to bring the adequate seed quality.It was shown clearly that the input-output balance was improvable without yield loss by correcting the spatial variability of wheat growth in a field.

Free Research Field

栽培システム学