Bio efficacy of newer insecticide tolfenpyrad (15% EC) against major sucking pests of brinjal

Abstract

Field trials were conducted at R.C.A., Udaipur during 2016 and 2017 to evaluate the bioefficacy of tolfenpyrad 15 EC at different dosages for the management of major sucking insect pests of brinjal (Solanum melongena Guen.). The standard insecticides viz., Imidacloprid 17.8 % SL @ 22.5 g a.i. /ha, Chlorantraniliprole 18.5 SC @ 40 g a.i. /ha, Cypermethrin 25 EC @ 50 g a.i. /ha and Pyriproxyfen 5 EC + Fenpropathrin 15 EC @ 100 g a.i. /ha were used for comparison. Overall, the field trials revealed that, tolfenpyrad 15 EC @ 150 g a.i/ha provided cross-spectrum control of insect pests as it registered highest mean reduction of whitefly (91.82%), jassids (86.80%), thrips (86.47%) and aphids (91.54%) during 2016. Whereas the standard insecticides, imidacloprid 17.8 % SL @ 22.5 g a.i. /ha was found next most effective in the mean reduction of sucking pests. The same trend was noticed during 2017.