Author(s):

Alka, RK Patil and BK Prajapati

Abstract: The present study on various antagonists and its culture filtrate was carried out to know their efficacy in managing the Rhizopus rot of tomato in vitro and in vivo. In vitro, all the six antagonists significantly helped in inhibiting the mycelial growth of R. oryzae over control. Lowest mycelium growth (22.75 mm) with highest mycelial growth inhibition was recorded in T. asperellum (74.72 %), while T. virens gave minimum mycelial growth inhibition (62.50 %) after 7th days of incubation. In case of in vivo study, T. asperellum found significantly superior both in pre- (0.45 %) and post-inoculation (0.45 %) treatments over control (99.27 %) after 5th day of inoculation. The culture filtrate of all the antagonists found effective in inhibiting the mycelial growth of R. oryzae over control. Complete mycelial growth inhibition was recorded in T. asperellum and T. viride on 5th day after incubation in in vitro. While in vivo study, the culture filtrate of T. asperellum and T. viride found most effective both in pre- (0.45 & 0.45 %) and post-inoculation (0.45 & 0.45 %) treatments in managing Rhizopus rot severity on 5th day after inoculation.

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