2010 Fiscal Year Final Research Report
Decomposition of plant residues in cropping systems for environmental conservation
| Project/Area Number |
20580011
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Crop science/Weed science
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| Research Institution | The University of Tokyo |
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Principal Investigator |
NAKAMOTO Tomomi The University of Tokyo, 大学院・農学生命科学研究科, 准教授 (50180419)
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| Co-Investigator(Kenkyū-buntansha) |
MURAKAMI Toshifumi 独立行政法人農業・食品産業技術総合研究機構, 東北農業研究センター, 上席研究員 (80391465)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 植物残渣 / リターバッグ / イネ科作物 / 有機物分解 |
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| Research Abstract |
The decomposition processes of gramineous crop residues were investigated by using the litterbag method in an Andosol field in Fukushima. The decomposition patterns of roots, stems, and leaves were different from each other and not well fitted by a simple exponential model. While more than 90% of wheat and maize residues were decomposed during two years, 20% of roots and 26% of stems of rye remained undecomposed. The rate of decomposition at the early stage was slower in the rhizosphere than in the non-rhizosphere.
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