Evaluation of Gypsum as a Carrier in the Formulation of Trichoderma viride

Abstract

At present there is considerable pressure from public and environment scientists to go for biocontrol agents, to prevent the environmental pollution caused by pesticides. Use of Trichoderma viride Pers.exfr, was reported to be effective in reducing the propagules of seed as well as soil-borne pathogens (Papavizas, 1984). Ramakrishnan et al. (1994) developed a talc-based product of T. viride. Jeyarajan et al. (1994) reported that the talc-based T. viride when used for seed treatment @ 4 g/kg seed reduced the root rot of pulses and oilseeds. The cost of the talc powder is Rs.10/kg which has a major share in the production cost of Trichoderma product.