Efficacy of Newer Selected Insecticides, Beaveria bassiana and Neem Oil against Diamond Back Moth (Plutella xylostella)(L.) in Cabbage (Brassica oleracea var capitata)

Abstract

The trail was conducted at Crop research farm, Department of Entomology of Naini Agriculture institute, SHUATS, Prayagraj, (U.P) during rabi 2021-2022 to study the efficacy of newer selected insecticides, Beaveria bassiana and Neem oil against Diamond back moth (Plutella  xylostella) in Cabbage (Brassica oleracea var capitata) and the experiment was laid out in randomised block design with eight treatments and each was replicated thrice using a variety green soccer 546. The treatments are Spinosad 45% SC, Indoxacarb 14.5%SC, Emamectin benzoate 5%SG, Chlorantraniliprole 18.5%SC, Fipronil 5%SG, Beaveria bassaina (1x108 CFU/gm), Neem oil 0.3% along with an untreated control. The data on Percent reduction of larval population were significantly superior over control but among all treatments, chlorantraniliprole 18.5% SC is best effective for diamond back moth had showing (80.35%) percent reduction of larval population followed by Spinosad 45% SC (77.06%), Indoxacarb 14.5SC (73.43%), Emamectin benzoate 5%SG (71.77%), Fipronil (68.26%),Beaveria bassiana (67.06%) and Neem oil was least effective had showing (61.18%) percent reduction of larval population but superior over control. Among all the treatments, highest yield (314.9q/ha) and Cost-benefit ratio (1:7.59) was recorded in Chlorantraniliprole 18.5 %SC followed by Spinosad 45%SC with a yield of (273.73q/ha) and Cost-benefit ratio (1:6.77) as compared to control.