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Plant Pathology Journal

Year: 2011  |  Volume: 10  |  Issue: 2  |  Page No.: 73 - 78

Antagonistic Potential of Native Isolates of Trichoderma viride on Corm Rot Pathogen Complex of Saffron (Crocus sativus) in Kashmir

G. Hassan Mir, L.S. Devi, S. Ahmad, V. Manoj Kumar and P. Williams

Abstract

Investigation was undertaken to screen the potential native isolate of Trichoderma viride for bio suppression of corm 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 native isolate against corm rot pathogens. Nine isolates of Trichoderma viride namely TK1, TK3, TK4, TK6, TK8, TK9, TK10, TK11 and TK15 were isolated from soils of different orchard plantations of Kashmir valley on modified Trichoderma Specific Medium (TSM). The isolates were studied for their cultural, morphometric characters and antagonistic potential against six newly recorded major fungal pathogens of saffron viz. sterile Basidiomycetes fungus, Rhizoctonia solani, Phytophthora sp., Fusarium oxysporum f. sp. gladioli, F. oxysporum and F. solani individually on Potato Dextrose Agar, the culture morphology of all the isolates was found to be similar. The isolate TK1, TK3, TK4, TK8, TK9, TK11 and TK15, were found fully overgrown on all corm rot Pathogens of saffron, where as the isolates TK13 failed to inhibit the Phytophthora sp. Efforts are onto evaluate the performance of promising isolate in field by soil and seed application methods.

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