Multi-dimensional evaluation of the nitrogen status of agricultural soils in Japan -analysis of the controlling factors and comparison with other Asian countries
Project/Area Number |
22580070
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Plant nutrition/Soil science
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Research Institution | Kyoto Prefectural University |
Principal Investigator |
YANAI Junta 京都府立大学, 大学院・生命環境科学研究科, 教授 (00273491)
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Project Period (FY) |
2010 – 2012
|
Project Status |
Completed (Fiscal Year 2012)
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Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
|
Keywords | 土壌 / 窒素 / 日本 / 形態別定量 / 規定要因 / 有機可給態 / モデル化 |
Research Abstract |
The contents of effective organic mineralizable nitrogen were evaluated for 147 agricultural soils in Japan based on the mean annual temperature and found to be relatively high at medium temperature regimes. Effects of inorganic and organic fertilizer management on soil nitrogen fractions were evaluated. Soil nitrogen fractions were considerably affected by soil type, land use and soil physic-chemical properties. Soil nitrogen status in Japan was evaluated to be relatively fertile among Asian countries, reflecting temperate climate conditions and influence of volcanic materials.
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Report
(4 results)
Research Products
(7 results)
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[Presentation] Evaluation of nitrogen status of agricultural soils in Java island, Indonesia2013
Author(s)
Yanai, J., Omoto, T., Nakao, A., Koyama, K., Hartono, A. and Anwar, S
Organizer
11th International Conference of East and SouthEast Asia Federation of Soil Science Societies
Place of Presentation
Bogor, Indonesia
Year and Date
2013-10-21
Related Report
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