Efficacy of Chemicals and Bio-pesticides against Mustard Aphid, Lipaphis erysimi (Kalt.) on Mustard

The present investigation was conducted during rabi season of 2023-2024 at Crop Research farm, NAI, SHUATS, Prayagraj using Randomized Block Design (RBD) method and eight treatments are replicated thrice. Results revealed that, among all the treatments Imidacloprid 17.8 SL recorded lowest population of aphid (55.67), followed by Spinosad 45% SC (66.51), Cypermethrin 10% EC (78.55), Sixer plus (94.49), Nisco MECH 333 (96.17), Neem oil 5% (99.44), and Beauveria bassiana (109.90) was less effective among all the treatments. While, the highest yield and cost benefit ratio was obtained with Imidacloprid 17.8 SL (18.15 q/ha.), (1:5.20) Followed by Spinosad 45% SC (17.85 q/ha.), (1:4.78), Cypermethrin 10% EC (16.35 q/ha.), (1:4.54), Sixer plus (14.98 q/ha.), (1:4.18), Nisco MECH 333 (14.58 q/ha.), (1:4.08), Neem oil 5% (13.03 q/ha.), (1:3.61), Beauveria bassiana (12.55 q/ha.), (1:3.48) Least monetary return was obtained with control(9.17 q/ha.), (1:2.74).