| Budget Amount *help |
¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2019: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2018: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2016: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
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| Outline of Final Research Achievements |
To assess effects of salinity intrusion triggered by global warming, paddy fields near the estuaries of Red River, Vietnam was studied. Rice production was greatly reduced nearby branch estuary where paddy and aquacultural ponds were not zoned by dykes, whereas yield of paddy close to the dykes in the mainstream estuary was just slightly reduced. Short-duration quality varieties reduced yield in response to salinity compared with hybrid varieties. In the tank irrigated rice in South India (i.e., non-system tank without connecting rivers), drought occurred frequently during 2010-2019, which lead more farmers to dug bore-wells for supplementary irrigation. The tail fields and long duration quality varieties popular in markets tended to yield lower due to drought. In Cambodia, dry season rice cropping with fewer varieties in the flood plain of Tonle Sap spread after the big flood damages in 2011. Mechanization in irrigated paddy and overall labor-saving cultivation became more popular.
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