Efficacy of new generation insecticide molecules for controlling fall armyworm, Spodoptera frugiperda J. E. smith, (Lepidoptera: Noctuidae) in maize

Abstract

The study was conducted to know the performance of new insecticide molecules for management of invasive pest fall armyworm, Spodoptera frugiperda J.E. Smith in field condition at college of Agriculture, V. C. Farm, Mandya (Karnataka) during Kharif and Rabi 2019-20. Application of chlorantraniliprole 18.5 SC @ 0.3 ml l-1 at 15, 45 and 60 days after sowing recorded lowest larval population at 1, 3 and 7 days after spray followed by Spinosad 45 SC @ 0.15 ml l-1, spinetorum 11.7 SC @ 0.30 ml l-1 and emamectin benzoate 5 G @ 0.15 g l-1. At physiological maturity the highest plant height (2.08 m), grain (77.42 q ha-1) and straw yield (13.15 t ha-1) were recorded in chlorantraniliprole 18.5 SC @ 0.3 ml l-1 followed by Spinosad 45 SC @ 0.15 ml l-1, spinetorum 11.7 SC @ 0.30 ml l-1 and emamectin benzoate 5 G @ 0.15 g l-1. However, thiamethaxam 30 FS @ 0.6 ml kg-1 recorded highest larval population, lowest plant height, grain and straw yield compare to all other treatments except untreated control.