Field Evaluation of Certain Chemical Insecticides and Bioagents against Diamondback Moth, (Plutella xylostella L.) on Cabbage (Brassica oleracea var. capitata L.): An Investigational Research

An experiment was conducted at the research plot of the Department of Agricultural Entomology at Central Research Farm, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj during the rabi season of 2021. The main aim to conduct this research was to know the Insecticides and bioagents effect on control of Plutella xylostella. The field was laid in randomised block design (RBD) with seven treatments and one controlled plot. The Mean larval population plant was taken day before and 3, 7 and 14 days after each spray. Mean reduction in the larval population per plant revealed that all the treatments were significantly superior over the control (6.51). Chlorantraniliprole 18.5% SC recorded lowest mean larval population of P xylostella (1.52), followed by Spinosad 45% SC (1.75), Indoxacarb 14.SC (2.00), Emamectin Benzoate 5%SG (2.28), B thuringiensis (2.68), B bassiana (2.87), M anisopilae (3.02). Highest yield (280 q/ha) as well as B:C ratio (1:6.37) was obtained from the treatment Chlorantraniliprole 18.5% SC followed by Indoxacarb 14.5 SC (1:6.33), Emamectin Benzoate 5%SG ( 1:6.25), B thuringiensis (1:5.97), Spinosad 45% SC (1:5.75), B bassiana (1:5.72), M anisopilae (1:5.50) as compared to control (1:3.34).