EFFICACY OF DIFFERENT INSECTICIDES AGAINST SITOPHILUS ORYZAE LINN. IN STOREDWHEAT SEED

Abstract

ABSTRACT Seven insecticides, viz., neem seed kernel powder (NSKP), neem cake, dry neem leaf powder (all at 10 g/kg), neem oil (10 mL/kg), nimbecidine (5 and 10 mL/kg) and deltamethrin (Decis 2.5 WP; 40mg/kg) were evaluated as seed protectant against Sitophilus oryzae L. in stored wheat seed (HUW234). In a sample size of two kg in gunny bags, adult were released at the rate of 10 pairs/bag andbags were stored at room temperature. Observation on number of live adults was recorded after 3, 6and 9 months of storage. The deltamethrin (Decis 2.5 WP; 40 mg/kg) was found most effectivetreatment followed by neem India, at higher and lower doses, nimbecidine at higher and lower dose, neem oil, neem cake, dry neem leaf powder and NSKP treatments.