| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
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| Outline of Final Research Achievements |
The self-sufficiency of wheat in Japan is ca. 10%, and it is imperative to prepare the optimized production system which can quickly adapt to any changes of the free-trade treaties with the countries from which wheat is imported. Therefore, to develop the optimized wheat production system, we aimed at applying crop growth model for wheat production system which has not been tried in Japan so far.
A series of field experiments with different nitrogen application patterns and sowing dates were tried for five seasons at Nishitokyo City in Tokyo. And the parameter improvement (calibration) and validation of the APSIM crop model were conducted and the practical level of precision was confirmed. Then scenario analysis of a number of nitrogen application schemes were conducted in Kanto area and Hokkaido. As a result, the possibility of attaining higher yield and profitability under the higher nitrogen application levels than the current recommendation was demonstrated.
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