Lycoriella mali: Control in Mushroom Compost by Incorporation of Insecticides into Compost

Six of 29 chemicals evaluated against a sciarid fly Lycoriella mali (Fitch), the major insect pest of commercial mushrooms, gave control equal to that of diazinon at lower doses. Those found to require less and their LD95 and LD50 (ppm), respectively, were: BAY SIR 8514 (2-chloro-N-[[[4-(trifluoromethoxy) phenyl]amino]-carbonyl]benzamide) (0.4, 0.001); chlorpyrifos (11.0, 1.5); Lilly L-7063 (N-[[[5-(4-bromophenyl)-6-methylpyrazinyl] amino] carbonyl]2-chlorobenzamide (21.2, 3.8); ethoprop (25.1, 12.3); dimethoate (37.9, 7.3), and diflubenzuron (49.2, 4.9).