Bioefficacy and phytotoxicity evaluation of insecticides against insect pests of chilli under field conditions in Haryana

Abstract

The study was aimed to evaluate the bioefficacy and phytotoxicity of insecticides against thrips (Scirtothrips dorsalis), fruit borer (Helicoverpa armigera) and tobacco caterpillar (Spodoptera litura) on chilli crop. Among the treatments, Cyantraniliprole 10.26% OD @ 750 and 600 ml/ha resulted in the low populations of thrips 1.60 and 1.93/plant at 3 days after first spray (DAFS), which declined to 0.27 and 0.47/plant, respectively by 14 days after second spray (DASS), respectively. Similarly, the low larval population of fruit borer and tobacco caterpillar 1.07 and 1.20/plant and 0.87 and 1.13/plant, respectively were recorded at 3 DAFS, which reduced to 0.13 and 0.20/plant, and 0.33 and 0.47/plant, respectively by 14 DASS. Cyantraniliprole 10.26% OD @ 750 and 600 ml/ha also showed low fruit infestation and high yield as compared to other treatments. Lambda cyhalothrin 4.9% CS @ 500 ml/ha, emamectin benzoate 5% SG @ 200 g/ha, lufenuron 5.4% EC @ 600 ml/ha and cyantraniliprole 10.26% OD @ 450 ml/ha were relatively less effective. The products were eco-friendly, since no phytotoxicity to chilli crop and no adverse impact on prevailing natural enemies, spiders and coccinellid in crop ecosystem was observed.