Efficacy of Chemical Insecticides and Neem Products against Mustard Aphid, [Lipaphis erysimi (Kalt.)] on Mustard Brassica juncea (L.)

A field trial was conducted at Central Research Field, SHUATS, Naini, Prayagraj during rabi 2021 in Randomized Block Design (RBD). Seven treatments were evaluated against Lipaphis erysimi i.e., Imidacloprid 17.8% SL @ 0.5ml/lit, Thiomethoxam 25%WG @ 4 gm/lit, Neem oil 5ml/lit, Indoxacarb 14.5%SC@ 0.65 ml/lit, Emamectin Benzoate 5% SG, Neem seed kernel extract (NSKE) 5% @ 5 gm/lit, Spinosad 45% SC. Results revealed that, among the different treatments Imidacloprid (41.61) proved to be the most effective treatment followed by Thiomethoxam (45.49), Emamectin benzoate (51.78), Indoxacarb (62.67), Spinosad (69.98) and Neem seed kernel extract (NSKE) (72.97), whereas Neem oil (78.99) was found to be least effective against this pest. The plot treated with Imidacloprid 17.8% SL show highest yield (1:5.98) followed by Thiomethoxam 25%WG (1:5.37), Emamectin Benzoate 5% SG @ (1:5.25), Indoxacarb 14.5%SC (1:4.71), Spinosad 45% SC (1:4.45) and Neem seed kernel extract (NSKE) 5% (1:3.71), Neem oil (1:3.77) as compared to control plot (1:2.8).