Efficacy of novel insecticides and their combinations against leafhoppers and pink bollworm in cotton in Scarce rainfall zone of Andhra Pradesh

Abstract

Field experiment conducted at Regional Agricultural Research Station, Nandyal during Kharif, 2016-17 to evaluate the efficacy of individual and combination of chemicals i.e., Spinetoram, Sulfoxaflor, Pyriproxyfen, fenpropathrin along with standard check and untreated control against leafhoppers and pink bollworm revealed that Spinetoram 10% + Sulfoxaflor 30% WG @ 350 ml/ha, Spinetoram 10% + Sulfoxaflor 30% WG @ 300 ml/ha, Spinetoram @ 300 ml/ha and Sulfoxaflor @ 300 ml/ha were effective in reducing the leafhopper population in cotton whereas Spinetoram 10% + Sulfoxaflor 30% WG @ 350 ml/ha, pyriproxyfen @ 750 ml/ha and Sulfoxaflor @ 300 ml/ha were found effective in reducing the pink bollworm damage in green bolls along with highest yield.