Compatibility of Trichoderma asperellum with some selected fungicides, insecticides and weedicides

An experiment An in vitro study conducted in 2024-2025 at the College of Agriculture, Nagpur evaluated the compatibility of five fungicides, five insecticides, and five weedicides with Trichoderma asperellum. Among fungicides, propineb and copper oxychloride showed high compatibility, with inhibition rates of 3.25% and 6.64%, while systemic and combination types completely suppressed growth. Insecticides were generally more favorable; indoxacarb, thiamethoxam + lambda-cyhalothrin, and imidacloprid had no adverse effects, whereas fipronil and emamectin benzoate were moderately inhibitory. Of the weedicides, pendimethalin was compatible (7.70% inhibition), while imazethapyr, oxyfluorfen, and glyphosate caused partial inhibition. Propaquizafop + imazethapyr proved highly incompatible. These findings support the potential integration of T. asperellum with select agrochemicals in pest and weed management, pending field-level validation.