Efficacy of selected botanicals against mustard aphid, Lipaphis erysimi (Kaltenbach) on mustard (Brassica juncea L.)

Abstract

Management of Mustard aphid Lipaphis erysimi (Kaltbach) using Botanicals in field condition was carried out during Rabi 2023-24 at central Research field SHUATS Prayagraj, UP., India. The management of Mustard aphid was done using 8 different treatments and benefit cost ratios of all the treatments were calculated. Total one sprays were applied to protect the crop from Lipaphis erysimi using randomized block design with three replications. The observations of Lipaphis erysimi 24 hours before (Pre-treatment) and 3th, 7th and 14th day after spraying (post-treatment) were recorded for computing the percent of pest reduction. The data were subjected to statistical analysis after appropriate transformation for interpretation. The treatment with recommended (T4) Imidacloprid 17.8SL +NSKE5%Was of the most effective treatment followed By (T7) Imidacloprid 17.8 SI and (T3) Azadiractin the next best treatment were found to be (T1) Neem oil 5% and (T2) NSKE5%, (T5) Castor oil and (T6) cow urine were found to be least effective against Lipaphis erysimi (Kaltbach). The highest cost Benifit ratio was recorded with (T4) Imidacloprid17.8SL+NSKE5% (1:5.4) followed by the (T7) Imidacloprid 17.8SL (1:4.96), (T3) Azadiractin ts, Neem oil 5% (1:3.97), (T2) NSKE 5% (1:3.64), (T5) Castor oil (1:3.52), (T6) cow urine (1:2.3) as compared to untreated (T8) control (1:1.75).