Abstract

An investigation was made to minimize root rot of cluster bean incited by Rhizoctonia bataticola (Macrophomina phaseolina) by use of Trichoderma, neem leaf extract and carbendazim. It was observed in Dual Culture Technique, Trichoderma harzianum showed highest inhibition of mycelial growth of the test pathogen when compared to Trichoderma viride and Bacillus subtilis. The extract of five plants part and five fungicides were evaluated against Rhizoctonia bataticoa by Poisoned Food Technique. Among these the extract of garlic (10%), neem (10%) and carbedazim were found most effective to inhibiting mycelial growth of test fungus followed by tebuconazole + tryfloxystrobin. Plant extracts, bio-agents and fungicides which were found most effective in in vitro studies were tested as seed treatment in pot against R. bataticola. Carbendazim, Trichoderma harzianum and garlic extract were proved most effective in reducing disease incidence.

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