Bio-efficacy of insecticides against Thrips tabaci on Onion and adverse effect on natural enemy

The efficacy of nine insecticides and an untreated control (two applications) tested against thrips, revealed that fipronil (0.01%) proved to be most effective, followed by clothianidin (0.01%). The next most effective insecticides were acetamiprid (0.004%) and thiamethoxam (0.025%). Thiacloprid (0.04%) and malathion (0.05%) ranked in middle order of efficacy whereas, emamectin benzoate (0.002%), chlorfenapyr (0.01%) and chlorantraniliprole (0.05%) were proved to be least effective against thrips. Natural enemies like Coccinelis beetle was safe with insecticidal sprays.