Induction of Higher Tolerance in Trichoderma harzianum against Pesticides

Trichoderma harzianum was subjected for induction of higher tolerance against fungicides (metalaxyl MZ, benomyl and propiconazole), nematicides (carbofuran and phorate) and weedicides (diuron and atrazin) at different concentrations. The higher tolerance in the bioagent was recorded against metalaxyl MZ upto 0.5 per cent. While, benomyl was found to be most toxic to the bioagent where tolerance could be induced upto 0.025%. Similarly for propiconazole the tolerance could be induced upto 0.025%. However, Trichoderma harzianum possessed tolerance against carbofuron 0.05% was further developed for higher tolerance of the same at 0.2% concentration. But in case of phorate tolerance could be induced upto 0.05%. Likewise, the isolates of the bioagent were developed to possess higher tolerance against diuron and atrazin each at 0.2%. Therefore, these fungicides, nematicides and weedicides can be integrated with Trichoderma harzianum for the integrated management of diseases, nematodes, weeds and soil borne plant pathogens, simultaneously.