S. S. HUNDARE, B. V. DEORE, Y. S. SAINDANE, S. A. LANDAGE AND U. K. KADAM
Department of Entomology, Post Graduate Institute, MPKV, Rahuri, Ahilyanagar, Maharashtra, India
AINP on Pesticide Residues and Contaminants, Department of Entomology, MPKV, Rahuri, Ahilyanagar, Maharashtra, India
AINP on Pesticide Residues and Contaminants, Department of Entomology, MPKV, Rahuri
AICRP on Forage Crops, MPKV, Rahuri
Department of Entomology, Post Graduate Institute, MPKV, Rahuri
*(e-mail: hundaresimran@gmail.com)
(Received: 17 December 2025; Accepted: 25 December 2025)
SUMMARY
The present study was conducted during the Kharif season of 2024 at the Instructional Farm, Department of Entomology, MPKV, Rahuri to evaluate the bioefficacy of selected insecticides against the fall armyworm, Spodoptera frugiperda. Six treatments, Thiamethoxam + Lambda- cyhalothrin, Spinetoram, Chlorantraniliprole, Emamectin benzoate, Lufenuron + Emamectin benzoate and an untreated controlwere planned in a Randomized Block Design with four replications. Insecticides were applied three times at 10dayintervals after the pest population reached the economic threshold level. Among the evaluated insecticides, Spinetoram 11.7% SC recorded the lowest infestation (9.77%) and showed superior performance compared to the remaining treatmentswhich exhibited 12.52 to 46.04% infestation. Chlorantraniliprole 47.85% SC and Emamectin benzoate 5% SG were the next effective treatments. Spinetoram also resulted in the highest cob yield (8.41 t/ha) and the maximum incremental cost-benefit ratio (1:6.47). The findings identify Spinetoram as the most effective and economically viable insecticidal option for sustainable management of fall armyworm in maize.
Key words: Maize, Fall armyworm, spinetoram, chlorantraniliprole, emamectin benzoate, bioefficacy