| Project/Area Number |
25450495
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Environmental agriculture(including landscape science)
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| Research Institution | Hirosaki University |
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Principal Investigator |
Kang Dong-Jin 弘前大学, 農学生命科学部, 准教授 (20409080)
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| Co-Investigator(Kenkyū-buntansha) |
ISHII Yasuyuki 宮崎大学, 農学部, 教授 (50211032)
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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 |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | ファイトレメディエーション / ネピアグラス / 乾物収量 / 吸収濃度 / 放射性セシウム / カリウム肥料 / 除染率 / 除染効率向上手法 / 腐植量 / 高密度 / 刈取り回数 / 放射性カリウム競合 / 高密植 / 茎葉部乾物収量 |
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| Outline of Final Research Achievements |
This study examines on the remediation of radiocesium-137 (137Cs) using napiergrass (Pennisetum purpureum Schum.) in highly Cs-contaminated soils in the town of Namie, Fukushima Prefecture. We elucidate that higher humus content was closely related to a higher biomass and Cs removal ratio (CR), and the highest CR could be achieved through a high aboveground biomass under high planting density with biannual cutting and applied a low level K fertilizer, especially 20% K. Therefore, to increase biomass and CR, it is necessary to apply a low level K fertilizer, even though it would somewhat compete with 137Cs uptake from the soil to the plant.
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