RESEARCH REPORTS FROM INSTITUTE FOR AGRO-MICROBIOLOGY, Vol. 6, 2002 p.25-39
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ORIGINAL ARTICLE
2.Microbial and Biochemical Characteristics of the Cultivated Soils of Cabbage as Affected by Soil Management
Hiroyasu Tabuchi1, Akiko Higashi1, Hideshi Kawarazaki2, Ichio Nioh1(1 Institute for Agro-Microbiology 2 MOA Nature Farming and Culture Agency)
In addition to microbial densities, respiration activity, FDA hydrolytic activity, cellulase activity, and microbial biomass carbon of the soils, which are managed with chemical fertilizer, the cattle manure compost, and the grass compost in the cabbage continuous cropping examination field were studied. There was no appreciable difference among three treatments in the number of aerobic bacteria and actinomyces in the soils. The number of fluorescent Pseudomonas was higher in the order of cattle manure compost district > glass compost district > chemical fertilizer district. In a biochemical properties, the FDA hydrolytic activity, the cellulase activity, the respiration activity, and the microbial biomass carbon were higher in the order of glass compost district > cattle manure compost district ≧ chemical fertilizer district. The ratio of FDA hydrolytic activity, the cellulase activity, and the respiration activity to microbial biomass carbon values were higher in the order of chemical fertilizer district > cattle manure compost district > grass quality compost district.
From these experiments, it was suggested that some biochemical features and fluorescent Pseudomonas density of the soil would be the indicator candidates which showed the difference of soil managements.
Keywords: microbial density, biochemical property of soil, Fluoroscein diacetate (FDA) hydrolytic activity, cellulase activity, respiration activity, microbial biomass carbon, cabbage, fluorescent Pseudomonas, compost