In vitro Evaluation of Plant Products and Bio-control Agents against Colletotrichum capsici Causing Fruit Rot of Chilli (Capsicum annum L.)

An experiment was conducted in vitro to study the effect of different oils [palmarosa oil (Cymbopogon martinii), citronella oil (Cymbopogon citratus), karanj oil (Pongamia glabra), neem oil (Azadiracta indica) and mahua oil (Madhuca longifolia)], plant extracts (mahua, neem, ginelly, castor, groundnut, coconut and karanj) and antagonistic micro organisms (Trichoderma sp, Pseudomonas sp and Bacillus sp) on fruit rot of chilli. It was noticed that citronella oil (0.05% and 0.1%) and palmarosa oil (0.05% and 0.1%) showed absolute inhibition of mycelial growth while karanj plant extracts showed 38.6% inhibition over control. Among the bio-control agents Trichoderma viride showed 58.1% inhibition of mycelial growth over control.