Efficacy of Actara - 25 WSG (Thiamethoxam) against Termites in the Laboratory

Abstract

The efficacy of the insecticide, Actara 25 WSG in comparison to Endosulfan 35 EC and Chlorpyriphos 20 EC was evaluated in the laboratory. Wooden blocks of Mango (Mangifera india) (2 x 2 x 2cm) were impregnated with different concentrations of the three insecticides: Actara 25 WSG (0.0125%, 0.0187%, 0.025%, 0.05%), Chlorpyriphos 20 EC (0.12%), Endosulfan 35 EC (0.20%) and exposed to carton nest termite, Microcerotermes beesoni for 60 days. On the basis of the weight loss in wooden blocks due to feeding of termites, Endosulfan 35 EC was found to be most effective, followed by Chlorpyriphos 20 EC and Actara 25 WSG respectively.