Author(s): MS Mahajan, BD Deokar and NN Munde

Abstract: Indiscriminate use of pesticides causes detrimental effect on the all forms of life and also disturbed ecological balance of environment. Trichoderma emerged as powerful biocontrol agents against soil borne pathogens. Trichoderma spp. are strong opportunistic invaders, fast growing, prolific producer of spores and antibiotics. Therefore, a study was conducted to evaluate compatibility of Trichoderma asperellum with commonly used seven systemic fungicides (@ 500, 1000 and 1500 ppm) and seven non systemic fungicides (@ 1500, 2000 and 2500 ppm). The systemic fungicides, Propiconazole, Tebuconazole, Difenoconazole and Carbendazim caused cent per cent (100%) inhibition of Trichoderma asperellum and were found incompatible at 500, 1000 and 1500 ppm concentrations. The non systemic fungicides viz., Sulphur, Zineb and Chlorothalonil were found compatible with T. asperellum at 1500, 2000 and 2500 ppm concentrations. Propineb was found compatible with T. asperellum at 1500 and 2000 ppm concentrations and incompatible at 2500 ppm concentrations. T. asperellum was found incompatible with Mancozeb, Copper oxy chloride and Copper hydroxide at all three concentrations.

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