| Project/Area Number |
25660280
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Environmental agriculture(including landscape science)
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| Research Institution | Kagoshima University |
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Principal Investigator |
AKAGI Isao 鹿児島大学, 農水産獣医学域農学系, 助教 (40500004)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | フッ素 / 土壌蓄積 / 農耕地土壌 / フッ素の土壌蓄積 / 赤色土 / 灰色低地土 / 黒ボク土 |
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| Outline of Final Research Achievements |
We analyzed the fluorine concentration in cultivated soils sampled farms, and investigated the possibility of fluorine accumulation in these soils. The total fluorine concentration in cultivated soils ranged from 135-363 mg/kg (upland field, Andosol), 43.4-300 mg/kg (upland field, Red-yellow soils), 125-293 mg/kg (paddy field) and 163-471 mg/kg (greenhouse field), respectively. About 72% of all the cultivated soils had a higher total fluorine concentration than the neighboring non-cultivated soils. A positive correlation was observed between the total fluorine and total phosphate concentrations in these soils, which indicates that the fluorine in cultivated soils is derived from phosphate fertilizers.
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