Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore-641 003, Tamil Nadu
Field studies were conducted to evaluate spirotetramat 150 OD as foliar application for its bioefficacy against cotton whitefly. It was revealed that spirotetramat @ 75 g ai ha−1 reduced the whitefly population up to 89.7% over control. Imidacloprid @ 25 g ai ha−1 and acetamiprid @ 20 g ai ha−1 were also equally effective. The LC50 of spirotetramat to whitefly was 1.671 µg mL−1. Foliar application of spirotetramat 150 OD against cotton white fly revealed that spirotetramat at 75 g ai ha−1 persisted up to 25 days.
Spirotetramat, whitefly, insecticide, ketoenols, LC50
