Resistance of UV induced mutants of Trichoderma harzianum to benzimidazole and dicarboxide fungicides.

Conidia of one wild-type isolate (TW5) of trichoderma harzianum, antagonistic to Verticillium dabliae and Sclerotinia minor, were irradiated alternation with Trichoderma. The latter strategy permitted complete or almost complete control of mould and a reduction (up to 50%) of the number of chemical treatments. Thus, the possibility of including Trichoderma in intregrated control strategies on protected crops looks promising