The fluctuation of soil pathogenic microbes population in radish and Chinese cabbage fields.
1983
Lee W.H. | So I.Y.
To study the effects of cropping systems and fungicide (Dachigaren) on soil microbes, the seasonal fluctuations of soil microbes in the fields of radish and chinese cabbage including soil pH. soil moisture content and soil temperature were investigated on a 15-day interval. The pathogenic microbes showed the density of order: Xanthomonas, Erwinia, Pseudomonas, Agrobacterium and Corynebacterium. Xanthomonas, Erwinia and Pseudomonas in which induced radish and Chinese cabbage diseases were higher than Agrobacterium and Corynebacterium in population density. Bacterial soft rot occurred at the density of Erwinia 5.9-6.6 x 10 to the 5th power/dry soil 1 gram.
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