J.of Soc of Agri Struc, Japan.
Vol.38,No.3 December 2006, 133-138
Original:
Language: Japanese

    The aim of the study was to clear the effect of inactivation of Verticillium dahliae and Fusarium oxyporum f. sp. melonis of crops pathogenic fungi under methophilic (35^oC) and thermophilic (55^oC) temperatures using batchwise anaerobic digesters. The time required for a 90% reduction of viable counts of a population of microorganisms or a decrease by log₁₀(T₉₀) of Verticillium dahliae was 7.7 days at 35^oC and 0.6 days at 55^oC, respectively. The T90 value of Fusarium oxyporum f. sp. melonis was 0.5 days at 35^oC. However, Fusarium oxyporum f. sp. melonis could not be detected after 15 minutes at 55^oC . As a result, it was clear that thermophilic digestion was more effective in inactivating Verticillium dahliae and Fusarium oxyporum f. sp. melonis than methophilic digestion.

Keywords: Verticillium dahliae, Fusarium oxyporum f. sp. melanis, dairy slurry, anaerobic digestion, T₉₀

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