The studies on effect of phyto-extracts for control of Trichoderma mould in oyster mushroom cultivation was conducted to study the efficacy of different phytoextracts against Trichoderma mould. Oyster mushroom is also affected by various diseases caused by fungal and bacterial agents. Among the fungal agents, Trichoderma mould is major mushroom infecting pathogen. Looking to the seriousness of infecting pathogens to the oyster mushroom, present investigation was undertaken for isolation and identification of Trichoderma mould and its management by using botanicals and chemicals. Phytoextracts viz Lantana camera, Azadirachta indica, Ocimum sanctum, Eucalyptus sp and chemical were screened in vitro by poisoned food technique against Trichoderma mould. The treatment of Carbendazim + Formalin found to be the best treatment while among the phytoextracts neem (A. indica) @ 6% proved to be excellent in inhibiting mycelial growth of Trichoderma mould showing 75.19% and 32.99% per cent inhibition respectively. The least inhibition was observed in treatment T7 Ocimum sanctum @ 2% (6.02%) over control. The observation on per cent contamination index

Keywords : Phyto-extracts, Trichoderma mould, oyster mushroom cultivation