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Antagonistic effects of soil microorganisms on rice sheath blight pathogen



Antagonistic effects of soil microorganisms on rice sheath blight pathogen



International Rice Research Newsletter 7(6): 12-13



A Trichoderma sp. colonizing sclerotia of Thanatephorus cucumeris in a dryland rice field was isolated and tested for antagonism in vitro. Pathogen growth ceased after contact with the T. sp. which eventually covered the whole plate. Of the many antagonistic bacteria isolated from sheath blight sclerotia, isolate 17 prevented lesion development when sprayed on inoculated, detached, rice flag leaves before, after and simultaneously with the pathogen.

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