Evaluating Efficacy of Novel Insecticides against Thrips tabaci, under High Density Planting System on Cotton

Abstract

Background: novel insecticides are the most effective against all stages of sucking pests like aphids, whiteflies, scale insects, thrips and mealybugs. The compatibility of Fipronil commonly used insecticides along with newer insecticides was investigated in this study. Aim: To study the compatibility and toxicity of certain newer insecticides against cottonthrips. Study Design: Randomized Block Design. Methodology: Six different insecticides were evaluated along with untreated control conditions against thrips. The results showed that insecticides, viz., Isocycloseram 9.2% DC, Cyantriniprole 10.6%OD, Chlorfenapyr 240 SC, Flonicamid 50 WG, Tolfenpyrad 15% EC and Fipronil 5% SC against thrips in cotton ecosystem along with these untreated control. Highest reduction in thrips was recorded with Isocycloseram 9.2% DC with 88.3 per cent reduction of thrips, followed by Fipronil 5% SC with 80.3 per cent and Flonicamid 50 WG with 75.9 per cent and lowest reduction was recorded in Tolfenpyrad 15% EC with 52.7 per cent reduction of thrips after 10 days of all 2 sprayings respectively. Conclusion: This study suggests that the most suitable insecticides. Among all the insecticides Isocycloseram 9.2% DC, Fipronil 5% SC and Flonicamid 50 WG are demonstrated to viable in overseeing thrips of cotton in HDPS integrated into pest management programs.