EFFECT OF THE APPLICATION OF LIGNIN AND/OR CHITIN TO SOIL INOCULATED WITH Fusarium oxysporum ON THE VARIATION OF SOIL MICROFLORA AND PLANT GROWTH
スポンサーリンク
概要
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Effect of the application of organic materials to soil inoculated with Fusarium oxysporum on the variation of soil microflora was studied during three years. Plant cucumber was cultivated five times and the growth was analyzed statistically. Lignin and/or chitin were applied to soil at concentrations of 2,000 and 1,000 ppm, respectively. Fusarium oxysporum f.sp. cucumerinum (F.o.c.) was inoculated to the soil at a level of 10^9 propagules/pot. After cucumber, the host plant, had been cultivated five times during three years, the following results were obtained: 1) Chitin application increased the populations of fungi actinomycetes and decreased the population of F.o.c. in the soil. 2) Lignin application inhibited the multiplication of fungi, induced the growth of a peculiar fungal flora and promoted the survival of F.o.c. in the soil and also masked the useful effect of chitin application. 3) Increased of F.o.c. population by host plant cultivations was not observed. Populations of F.o.c. decreased in all the soil treatments and became stable at a level of 10^3 to 210^4 propagules/g dry soil. 4) Lignin application tended to decrease plant growth expressed on a shoot dry weight basis. It is suggested that chitin application may be effective for the recovery of soil from soil-borne diseases caused by Fusarium spp. but that the effect of chitin application may be masked to some extent in soil with a high content of lignin.
- 社団法人日本土壌肥料学会の論文
著者
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Adachi Katsuki
Department Of Agricultural Chemistry Kyoto University
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Kobayashi M
Kyoto Univ. Kyoto Jpn
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Takahashi Eiichi
Department Of Agricultural Chemistry Kyoto University
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KOBAYASHl Michiharu
Department of Agricultural Chemistry, Kyoto University
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Takahashi Eiichi
Department Of Agirucltural Chemistry Kyoto University
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TAKAHASHI Eiichi
Department of Agricultural Chemistry, Kyoto University
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