Growth Promotion of Fluorescent Pseudomonads and Control of Potato Common Scab in Field Soil with Non-antibiotic Actinomycete-biofertilizer

概要

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Field studies on the control of potato common scab were done with non-antibiotic Actinomycete biofertilizer, which was manufactured from swine feces with coprophilous actinomycetes and acidified to pH 5.0 with sulfuric acid. The field soil at pH 5.0 was mixed with 0.56 kg of the acidified biofertilizer per subplot (1.0×1.2 m) to a depth of the 15 cm. The scab severity, in terms of the percent coverage of the total surface area of potato tubers, was l0.7% in the control, while the lesions were slight in the biofertilizer subplot, scab severity being only 2.3%, and the potato production was increased 3 times with the biofertilizer. The viable counts of Streptomyces scabies in the biofertilizer subplot decreased to 1×10^3 per gram soil from 5×10^5 by 12 weeks, while the inhabitant fluorescent pseudomonads increased to 2.4×10^7 per gram soil from 3×10^4,and the increased fluorescent pseudomonads were antagonistic to the pathogenic strains.
社団法人日本農芸化学会の論文
1992-08-23