Abstract

Rhizoctonia solani Kuhn isolated from rice compared well in its Morphology with other isolates of R. Solani from cowpea, Jack and Cotton. The pathological reactions of these four isolates varied and the one from rice was able to infect all the plants tested including Manihot esculenta and Allium cepa which are new records. On rice seedlings isolates from rice and cowpea produced almost similar symptoms. Isolate from Jack produced only a very mild symptom and isolate from cotton was not pathogenic to rice. The soil inoculation studies with four isolates showed that the isolates from rice, cowpea and Jack were Pathogenic to all plants tested. Isolate from cotton was not Pathogenic to Oryzae sativa, Sorghum vulgare and Vigna sinensis. Isolates from rice and cowpea produced more or less same Pathogenic reactions on various hosts tested.

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