| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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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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