Efficacy of Some Bio-pesticides against Mustard Aphid Lipaphis erysimi (Kalt) in Mustard (Brassica juncea)

Management of Mustard aphid Lipaphis erysimi (kaltbach) using Bio-pesticides in field condition was carried out during Rabi 2022-23 at central Research SHUATS Prayagraj,UP, India. The management done 8 different treatments and benefit cost ratios were calculated. One spray is applied to protect the crop from mustard (Lipaphis erysimi) randomized block design with three replications. observations 24 hours before (Pre-treatment) 3rd, 7th 14th day after spraying (post-treatment) recorded for computing per cent pest reduction. treatment Spinosad 45%SC (T6) (86.75%) shows highest reduction most effective followed by Imidacloprid 17.8%SL (T7) (76.97%), Nisco sixer plus 45 SC (T1) (61.83 %), Verticillium lecanii (2×108 Spore/ml) (T2) (51.04%), Beauveria bassiana (2CFU×108 ml) (T4) (47.60%), Metarhizium anisopliae CFU/gm) (T3) (42.01%), Least percentage obtained Neem oil 5% EC (T5) (33.42%). While higher ratio (1:7.96), (1:7.83), (1:6.57), (1:5.79), (1:5.64), (1:5.63) (1:5.03).