Exploiting the bio-control activity of Trichoderma viride isolates against Wilt complex disease of Chilli

Abstract

Investigation was undertaken to screen the potential native isolate of Trichoderma viride for bio suppression of corn rot pathogen complex, as Trichoderma viride are the most successful and widely used biocontrol agents. Taking the advantage and constraints of Trichoderma viride into consideration, efforts were made to encourage the nauve isolate against corn rot pathogens. Nine isolates of Trichoderma viride namely Tv1, Tv3, Tv4, Tv6, Tv8 Tv9, Tv10, Tv11, and Tv15, were isolated from soils and which modified Trichoderma  Specific Medium (TSM). The isolates were studied for their cultural, Micrometric i.e. characters and antagonistic potential against six newly recoided majoi fungal pathogens of chilli viz sterile Basidiomycetes fungus, Rhizoctonia solani, Phytophthora sp., F. oxysporum and F. solani  individually on Potato Dextrose Agar, the culture morphology of all the isolates was found to be similar The isolate Tv1, Tv3, Tv4, Tv8, Tv9, Tv11, and Tv15, were found fully overgrown on Pathogens of chilli wilt complex, where as the isolates Tvl3 failed to inhibit the Phytophthora sp Efforts are onto evaluate the performance of promising isolate in field by soil and seed application methods.