Comparative biocontrol efficacy of mutant and parent strains of Trichoderma viride was evaluated against Fusariuin oxysporum f.sp. ciceri (causing chickpea wilt) in vitro and in vivo. The 50 per cent culture filtrate concentration of mutants of T. viride showed higher colony growth inhibition (upto 68.89%) of F. oxysporum f.sp. ciceri as compared to parent strain, Tv34 (41.90%) after 144 hrs of incubation. The mutant strain Tv34-M5 was evaluated along with parent strain under green house and field conditions. Seed+Soil treatment of mutant strain gave maximum plant stand i.e. 96.13 per cent. In field, seed treatment with mutant strain @10g/kg seed gave maximum disease control (80.80%) after 90 days of sowing.
Chickpea wilt, Fusariuin oxysporum f. sp. ciceri, Mutant, Trichoderma viride
