Field Evaluation of Selected Insecticides and Botanical against Mustard Aphid, Lipaphis erysimi (Kalt.) on Mustard, Brassica juncea L.: An Experimental Investigation

A field experiment was carried out at Central Research Farm [CRF], SHUATS, Naini, Prayagraj during the Rabi season. Six treatments were examinedagainst Lipaphis erysimi. i.e. Fipronil 5% SC @ 0.5ml/lit, Difenthurion 50% WP @ 0.20g/lit, Profenophos 50% EC @ 1ml/lit, Thiamethoxam 25% WG @ 0.25g/lit, Imidacloprid 17.8% SL @ 0.5ml/lit and NSKE 5% @ 5ml/lit were evaluated against mustard aphid Lipaphis erysimi. Mustard aphid is the major constraint responsible for low yield as well as low quality seed, which is considered as key factor in reducing mustard production and can cause yield loss up to 90% . Among the various treatments, the lowest population of mustard aphid was recorded in Imidacloprid 17.8% SL (22.82). The plot treated with Imidacloprid 17.8% SL (24.6 q/ha) recorded highest yield among different treatments followed by Thiamethoxam 25% WG (21.8 q/ha), Difenthurion 50% WP (18.2 q/ha), Fipronil 5% SC (16.4 q/ha), Profenophos 50% EC (14.3 q/ha) and NSKE 5% (13.5 q/ha) as compared to the control plot (9.2 q/ha). Among the treatments, the best and most cost-effective therapy was Imidacloprid 17.8% SL (1:7.24) followed by Thiamethoxam 25% WG (1:6.43), Difenthurion 50% WP (1:5.24), Fipronil 5% SC (1:4.64), Profenophos 50% EC (1:3.94) and NSKE 5% (1:3.90) as compared to control plot (1:2.83).