RESEARCH REPORTS FROM INSTITUTE FOR AGRO-MICROBIOLOGY, Vol. 6, 2002 p.41-56
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ORIGINAL ARTICLE
3.Basic Study on Agricultural Utilization of the Compost made from Buckwheat Husk and Flour as Food Waste
Kotato Kato, Nobuaki Miura(Institute for Agro-Microbiology)
Possibility of the agricultural utilization of compost made from buckwheat husk and flour as food wastes was examined. The compost prepared from buckwheat husk and flour (homemade compost) and the commercial buckwheat husk compost were supplied. For comparison, other three composts, i.e., a commercial coffee residue compost, a commercial tea-leaf residue compost and a homemade cattle manure compost were tested. The C/N ratios of the homemade buckwheat husk and flour compost, the commercial buckwheat husk compost, and the commercial tea-leaf residue compost were less than other two composts supplied. The contents of phosphorus, potassium, and other minerals (Ca, Mg, Na) included in the commercial coffee residue compost were least among the five composts supplied. The content of inorganic nitrogen was largest in the homemade buckwheat husk and flour compost. The homemade buckwheat husk and flour compost and the commercial tea-leaf residue compost contained large amount of ammonium-nitrogen and nitrate-nitrogen, respectively. It was shown that the higher content of nitrogen in the buckwheat husk and flour compost was derived from the buckwheat endodermis and flour. Only the homemade buckwheat husk and flour compost weakly suppressed the germination of Chinese cabbage (Brassica campestris). The homemade buckwheat husk and flour compost strongly promoted the growth of Chinese cabbage. From these results, it was suggested that the compost made from buckwheat husk and/or flour was highly effective for the agriculture utilization.
Keywords: Compost, Buckwheat husk, Buckwheat flour, Coffee residue, Tea residue, Cattle dung, Food waste