Field efficacy of certain botanical and chemical insecticides against chilli thrips [Scirtothrips dorsalis (Hood)] on Chilli (Capsicum annuum L.)

Abstract

A field experiment was conducted during kharif, 2016 at SHUATS, Allahabad (U.P.) to efficacy of certain botanical and chemical insecticides against chilli thrips (Scirtothrips dorsalis (Hood)) in trans Yamuna region of district Allahabad compare the all the eight different treatments, consisting application of NSKE 5% (T1), Garlic sap extract 10g/lit (T2), Neem oil 2.5ml/l (T3), Dimethoate 1.6ml/l (T4), Imidacloprid 0.5ml/l (T5), Cypermethrin 1.8ml/l (T6), Spinosad 0.2ml/l (T7) and untreated control (To) reduced the infestation as compared to the untreated control. revealed that all the treatments were significantly superior over control among all the treatments Spinosad 0.2ml/l recorded highest reduction of Scirtothrips dorsalis population i.e. (79.79%) which was significantly superior over control followed by Imidacloprid 0.5ml/l (76.81%), Cypermethrin 1.8ml/l (71.38%) var. Dimethoate 1.6ml/l (66.02%), Neem oil 2.5ml/l (53.22%), NSKE 5% (48.11%) and Garlic sap extract 10g/Lit. (47.13%) was least effective among all the treatments. Among the treatment the best and most economical treatment was Spinosad 0.2ml/l (1:11.55) followed by Imidacloprid 0.5ml/l (1:10.53), Cypermethrin 1.8ml/l (1:9.14), Dimethoate 1.6ml/l (1:8.3), Neem oil 2.5ml/l (1:7.79), NSKE 5% (1:7.02) and Garlic sap extract 10g/l (1:5.67), as compared to control To (1:3.37).