Efficacy of selected insecticides against chilli thrips { Scirtothrips dorsalis (Hood)} on chilli ( Capsicum annuum L.) in Allahabad

Abstract

A field trail was conducted at the Central field, Department of entomology SHUATS, Allahabad during kharif July to November 2016 investigation entitled “Efficacy of selected insecticides against chilli thrips {Scirtothrips dorsalis (Hood)} on chilli (Capsicum annuum L.) in Allahabad” seven treatments were evaluated against Scirtothrips dorsalis i.e., T1 Imidacloprid 17.8 SL @ 0.2ml/lit, T2 Cypermethrin 25 EC @ 1.8ml/lit, T3 Spinosad 45 SC @ 0.3ml/lit, T4 Thiomethoxam 25 WP @ 0.2ml/l, T5 Fipronil 5 SC @ 2ml/lit, T6 Abamactin 1.8 EC @ 1ml/lit, T7 Profenophos 50 EC @ 2ml/lit were evaluated against chilli thrips Scirtothrips dorsalis. Result revealed that among the different treatments T4 Thiomethoxam (84.14%) proved to be the most effective treatments followed by T3 Spinosad (80.77%), T5 Fipronil (76.71%), T6 Abamactin (70.97), and T1 Imidacloprid (65.12), whereas T7 Profenophos (60.47%), T2 Cypermethrin 43.97 was found to be least effective against this pest. The plots treated with T4 Thiomethoxam 25 WP show highest (198.64 q/ha), followed by T3 Spinosad 45 SC (194.23 q/ha), T5 Fipronil 5 SC (190.56 q/ha), T6 Abamactin 1.8 EC (184.32 q/ha), T1 Imidacloprid 17.8 SL (170.98 q/ha), T7 Profenophos 50 EC (156.85 q/ha) and T2 Cypermethrin 25 EC (145.54) as compared to control To (90.34 q/ha). The highest yield was noticed in Thiomethoxam 25 WP (198.64 q/ha) followed by Spinosad 45 SC (194.23 q/ha).