Abstract
Bioeflicacy of carbendazim tolerant isolate of Trichoderma harzianum and exotic isolates of T. viride and T. virens were evaluated against dry root rot pathogen of mungbean incited by Macrophomina phaseolina under glasshouse conditions. T. harzianum when applied to the soil besides being effective against the disease, increased seed germination by 96 per cent, plant height by 35.5cm and total biomass by 2.53 g/plant compared to T. viride and T. virens isolates. In addition, soil application of T. hazianum @ 5 g/kg and seed treatment @ 10 8 conidia/ml was found effective against dry root rot pathogen. Integration of T. harzianum as soil application (5g/kg) + seed treatment (10 8 C/ml) with sub-lethal doses of carbendazim (0.02%) significantly reduced dry root rot incidence (95.3%) over soil treatment (91.5%) and seed treatment alone (86.5%).
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