Efficacy of Insecticides against Sesame Webworm Antigastra catalaunalis Duponchel

Antigastra catalaunalis Duponchel is the most serious pest of sesame, which is causing heavy losses in lowland areas, in northwestern, Ethiopia. Therefore the field experiment was conducted at Metemaboth on the experimental site and on farm while in Mirab Armachiho only on experimental in West Gondar, Ethiopia during the main cropping seasons of 2022 and 2023 to identify effective and economical insecticides for the management of A. catalaunalis using randomized complete block design with three replications. The treatment consists ninesynthetic insecticides and control were evaluatedwith variety Gonder 1used at a seed rate of 4 kg ha-1 and plot size of 12 m2. Data on larvae counts and yield and yield-related parameters were recorded.The combined analysis revealed that plots sprayed with profenofos 40%+ cypermethrin 4%EC and lambda-cyhalothrin had a low number of larvae and higher grain yield. Economic analysis showed that the maximum net benefit (ETB 71102.1 ha-1) was obtained on plots treated with profenofos 40%+ cypermethrin 4% EC followed by lambda-cyhalothrin treated plots.