Effect of different doses of newer insecticides against natural enemies of insect pest on okra
Anurag Potai, Gajendra Chandrakar, Balak Das
An experiment was conducted at Indira Gandhi Krishi Vishwavidyalaya, Raipur to study the impact of insecticides on the activity of coccinellids and spiders, a potential predator of sucking pests during kharif season to study the effect of insecticides (used to control the major sucking pest, leafhopper, white fly, aphid and thrips) on natural enemies of okra (Coccinellid and spider). Six chemical treatments viz., BAS 450 01 I 300SC@6.5g.a.i./ha, BAS 450 01 I 300 SC@12.5g.a.i./ha, BAS 450 01 I 300 SC@18.5g.a.i./ha, Chlorantraniliprole 18.5% SC@25g.a.i./ha and Cypermethrin 10% EC@70g.a.i./ha along with a untreated control were field evaluated. Among the chemical treatments BAS 450 01 I 300 SC@12.5g.a.i./ha and BAS 450 01 I 300 SC@18.5g.a.i./ha found to be safer insecticides to natural enemies. While the molecules namely, Cypermethrin 10% EC@70g.a.i./ha were moderately safer to natural enemies while Chlorantraniliprole 18.5% SC@25g.a.i./ha was highly toxic which need to be avoided its usage in okra ecosystem.