Performance of different insecticides against American serpentine leaf miner, Liriomyza trifolii (Burgess) in ridge gourd

Abstract

The present investigation was conducted at KRC College of Horticulture, Arabhavi, Karnataka during kharif season of 2016 and 2017 to evaluate the bio-efficacy of different insecticides (profenophos, buprofezin, spinosad, chlorantraniliprole, thiamethoxam, acephate, malathion) along with aqueous NSKE @ 5% and azadirachtin 1500 ppm against leaf miner, Liriomyza trifoii (Burgess) on ridge gourd. The results of pooled data revealed that spinosad 45 SC @ 0.3 ml/l was most effective in reducing leaf miner followed by chlorantraniliprole 18.5 SC @ 0.20 ml/l and thiamethoxam 25 WG @ 0.25 g/l. The highest yield was recorded in spinosad 45 SC @ 0.3 ml/l (103.75 q/ha) which was found to be at par with chlorantraniliprole 18.5 SC @ 0.20 ml/l (98.48 q/ha) followed by thiamethoxam 25 WG @ 0.25 g/l (88.71 q/ha).