Compatibility of Trichoderma harzianum with different fungicides under In vitro

This study was undertaken to evaluate the compatibility of commonly used agrochemicals at recommended dosages with Trichoderma harzianum at 100, 250, 500, 750 and 1000 ppm concentrations by using poisoned food technique. All the fungicides found to be more compatible and safer to the Trichoderma harzianum (Th-8 isolate) isolate at all the concentration and these fungicides did not adversely affect the growth of test antagonist except Thiram. Metalaxyl was found to be least effective and best compatible with Trichoderma harzianum (Th-8 isolate), since the percent inhibition of Trichoderma (Th-8 isolate) was only 6.68 percent at 1000 ppm concentration. Present finding suggest that compatible fungicides can be used with Trichoderma harzianum in an integrated disease management practices for the control of soil born pathogen.