Vol. 9, Special Issue 11, Part I (2025)

Maize is an important crop in Gujarat that suffers yield losses from fall armyworm (Spodoptera frugiperda). Field experiments at Main Maize Research Station, Anand Agricultural University during Kharif 2020-2021 evaluated seed treatments against S. frugiperda on maize (var. GAYMH-1). Seed treatment with cyantraniliprole 19.8% + thiamethoxam 19.8% FS at 6 ml kg⁻¹ significantly reduced larval population (3.46 larvae/10 plants), plant damage (10.72%) and cob damage (17.57%), and produced the highest grain yield (3053 kg ha⁻¹) and dry fodder yield (4426 kg ha⁻¹). This treatment also gave the best economic return (ICBR 1:3.22). Imidacloprid and thiamethoxam treatments reduced damage but were less effective. No phytotoxicity was observed. Seed treatment with cyantraniliprole + thiamethoxam (6 ml kg⁻¹) is recommended as a practical option for managing S. frugiperda in maize.