Comparative Efficacy and Economics of Chemicals Insecticides and Bioagents against Diamondback Moth (Plutella xylostella) on Cabbage (Brassica oleracea var. Capitata L.)

Field trial was conducted during rabi season 2021-2022 at Central Research Farm (CRF), SHUATS. The experiment laid out in Randomised Block Design with eight treatments each replicated thrice using a variety Green Soccer (546). are were Chlorantraniliprole 18.5% SC -T1, Indoxacarb 14.5%SC-T2, Emamectin benzoate 5% SG-T3, Spinosad 45% SC-T4, Beaveria bassaina (1x108CFU/ml)-T5, Metarhizium anisopilae (1x108 CFU/ml)-T6, Bacillus thuringiensis (1x108CFU/ml)-T7 and untreated control -T8. Mean reduction the larval population per plant revealed that all significantly superior over (6.51). recorded lowest mean of P xylostella (1.52), followed by (1.75),Indoxacarb 14.SC (2.00), Benzoate SG (2.28), B (2.68), bassiana (2.87), M (3.02). Highest yield (280 q/ha) as well B:C ratio (1:6.37) obtained from treatment 14.5 (1:6.33), 5%SG (1:6.25), (1:5.97), (1:5.75), (1:5.72), (1:5.50) compared to (1:3.34).