“COMPARATIVE EFFICACY AND ECONOMICS OF SELECTED BIO PESTICIDES WITH CHLORANTRANILIPROLE AGAINST TOMATO FRUIT BORER [HELICOVERPA ARMIGERA (HUBNER)] ON TOMATO [SOLANUM LYCOPERSICUM L.]”

Abstract

The field trial was conducted at Central Research Farm, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, UP during Rabi, 2022-2023. The experiment was laid out in RBD (Randomized Block Design). Eight treatments were evaluated against Helicoverpa armigera i.e., (T1) Chlorantraniliprole 18.5 % SC (T2) ½Dose Chlorantraniliprole + Nisco sixer plus 2ml/lit (T3) Spinosad 45% SC (T4) Nisco sixer plus 2ml/lit (T5) Neem seed kernel extract 5% (T6) Azadirachtin 5% (T7) Beauvaria bassiana and (T0) untreated Control Were tested to compare the efficacy against Helicoverpa armigera and their influences on yield of Tomato. The best and most economical treatment T₁ Chlorantraniliprole 18.5 % SC (1:10.), followed by T₂ ½Dose Chlorantraniliprole + Nisco sixer plus 2ml/lit (1:10.0) T₃ Spinosad 45% SC (1:8.7), T₄ Nisco sixer plus 2ml/lit (1:8.1), T₅ Neem seed kernel extract 5% (1:6.9), T₆ Azadirachtin 5% (1:6.5), T₇ Beauvaria bassiana (1:5.8), T₀ untreated control (1:4.9) having lowest B:C ratio. Chlorantraniliprole 18.5 % SC, ½Dose Chlorantraniliprole + Nisco sixer plus 2ml/lit, Spinosad 45% SC, Nisco sixer plus 2ml/lit recorded the minimum fruit infestation by 8.57, 9.60, 10.66, 11.35 percent respectively. The highest yield was noticed in Chlorantraniliprole 18.5% SC (240.5 q/ha), followed by ½Dose Chlorantraniliprole + Nisco sixer plus 2ml/lit (232.5 q/ha) and Spinosad (200 q/ha).