Factors of vivianite formation on rice roots
| Project/Area Number |
22658102
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Boundary agriculture
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| Research Institution | Tohoku University |
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Principal Investigator |
NANZYO Masami 東北大学, 大学院・農学研究科, 教授 (60218071)
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| Co-Investigator(Kenkyū-buntansha) |
TAKAHASHI Tadasshi 東北大学, 大学院・農学研究科, 准教授 (80132009)
KANNO Hitoshi 東北大学, 大学院・農学研究科, 助教 (30250731)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥3,440,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥540,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥1,100,000 (Direct Cost: ¥1,100,000)
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| Keywords | リン / 稲 / 水田 / ビビアナイト |
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| Research Abstract |
The plow layer soil of paddy field is reduced after transplant of rice seedlings and submergence. Under the reducing conditions, a part of phosphate in the plow layer soil crystalized as vivianite. A quantitative method to estimate the content vivianite was developed using the fact that vivianite is converted to a sparingly soluble material in the dilute acid with heating. Vivianite formation is more common in lowland soils such as gley lowland soils and gray lowland soils than in volcanic ash soils. The vivianite content decreased during midseason drainage and after drainage when the plow layer soil is oxidized.
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Report
(4 results)
Research Products
(16 results)
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[Journal Article] Identification of vivianite formed on the root of paddy rice grown in pots2010
Author(s)
Nanzyo, M., Yaginuma, H., Sasaki, K., Ito, K., Aikawa, Y., Kanno, H., Takahashi, T
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Journal Title
Soil Science and Plant Nutrition
Volume: 56巻
Issue: 3
Pages: 376-381
DOI
NAID
Related Report
Peer Reviewed
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[Journal Article] Identification of vivianite formed on the root of paddy rice grown in pots.2010
Author(s)
Nanzyo, M., Yaginuma, H., Sasaki, K., Ito, K., Aikawa, Y., Kanno, H., Takahashi, T.
-
Journal Title
Soil Science and Plant Nutrition
Volume: 56
Pages: 376-381
NAID
Related Report
Peer Reviewed
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