Nitrogen Uptake by Faba Bean from ^<15>N-Labelled Oilseed-Rape Residue and Chicken Manure with Ryegrass as a Reference Crop(Crop Physiology and Ecology)
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概要
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The effects of soil amendment with oilseed-rape residue (OSRR) and chicken manure (CM) on the growth and nitrogen (N) uptake of faba bean (Vicia faba L.) were assessed in a pot experiments with Italian ryegrass (Lolium multiflorum Lam.) as a reference crop. A ^<15>N isotope dilution method was used to estimate the amount of N derived from the residue (OSRR and CM) and from atmosphere through N_2 fixation in the plants. Dry weights (DW) of shoots and whole plants were heaviest in the plants grown on the soil amended with CM (CM plants) followed by the plants grown on the soil amended with OSRR (OSRR plants) and control plants in this order. There were significant differences (p<0.05) in dry weight between CM, OSRR and control plants. DW of roots was also increased by amendment with either CM or OSRR in faba bean, but it was decreased in yegrass. The amount of total N in both roots and shoots were increased by application of either CM or OSRR in both faba bean and ryegrass. The amount of N_2 fixed by faba bean cultured on 1.2 kg soil amended with lOg residue (CM or OSRR) was 85.9 mg pot^<-1> but total N in faba bean derived from OSRR and CM was 192 and 374 mg pot^<-1>, respectively. The percentage of N derived from atmosphere to total N in faba bean plants ranged from 15.9 to 26.5%. The amount of N taken up by faba bean and ryegrass plants from CM were larger than those from OSRR by 81.0 and 54.3%, respectively. Soil N balance was calculated as the difference between the amount of N applied (including fixed) and taken up by the plants. The N balance of soil amended with OSRR after cultivation of faba bean was 72.2% higher than that of the soil amended with CM, and that after cultivation of ryegrass was 89.9% higher.
- 日本作物学会の論文
著者
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Horiuchi Takatsugu
The United Graduate School of Agricultural Science, Gifu University
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Oba Shinya
United Graduate School Of Agricultural Science Gifu University
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Abdelhamid Magdi
United Graduate School Of Agricultural Science Gifu University
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Horiuchi Takatsugu
United Graduate School Of Agricultural Science Gifu University
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Horiuchi Takatsugu
The United Graduate School Of Agricultural Science Gifu University
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Abdelhamid Magdi
The United Graduate School of Agricultural Science, Gifu University
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Oba Shinya
The United Graduate School of Agricultural Science, Gifu University
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