RESEARCH REPORTS FROM INSTITUTE FOR AGRO-MICROBIOLOGY, Vol. 11, 2007 p.7-20
Copyright © Institute for Agro-Microbiology. All Rights Reserved.

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SPECIAL REPORT

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1.Effects of Garbage Compost on the Growth of Komatsuna (Brassica campestris L.) in Izunokuni

Section of Clean, Izunokuni, Shizuoka(Section of Environmental Sanitary, Nirayama-cho, Shizuoka)

The effects of application of garbage compost on the growth of Komatsuna (Brassica campestris L.) were examined to confirm the possibility of utilization of the garbage compost to vegetable cultivation in upland. Komatsuna were cultivated 2 times in garbage compost treated plot (2t and 4t), cattle manure compost-treated plot (CM), and chemical fertilizer-treated plot (CF) for two years in autumn. At the case of first made compost, the rate of nitrogen mineralization were negative value, the inhibition of the radicle extension was observed in the germination experiment by Komatsuna seeds, and the growth and yield of Komatsuna in 2t or 4t plot were lower than CM and CF plot. Therefore, the production of garbage compost was improved by adding cattle manure and already produced garbage compost in the next year. In spite of no clear changes on the chemical properties of the garbage compost, the growth and yield of Komatsuna became higher than the case of the last year's cultivation. The total carbon and total nitrogen of the soil were increased, and the pH of the soil changed from 5.9 to 6.2-6.3 by application with the garbage compost. It was suggested that this garbage compost was effective to soil-building.