1Cotton Research Station, TNAU, Srivilliputhur626135, Tamil Nadu, India
2Krishi Vigyan Kendra, Madurai
3Department of HorticultureAgricultural College and Research Institute, TNAU, Madurai625104, Tamil Nadu, India
Department of Agricultural Entomology, Krishi Vigyan Kendra, Madurai
*Email: suresh.k@tnau.ac.in (corresponding author)
Online Published on 24 January, 2023.
The contact toxicity of insecticides used in the cashew ecosystem viz., thiamethoxam, carbosulfan, buprofezin, lambdacyhalothrin, imidacloprid, chlorpyriphos and profenophos were evaluated against Indian bee Apis cerana indica F., and stingless bee Tetragonula iridipennis S. under laboratory conditions. It was observed that buprofezin caused the least mortality of 21.48 and 19.91% with A. cerana indica and T. iridipennis, respectively; chlorpyriphos led to maximum mortality of 100% to with both the bees, and thus highly toxic at 24 hours after treatment (HAT). Imidacloprid led to >70% mortality with both the bee species at 24 HAT, while it varied from 40 to 60% the bees with thiamethoxam, carbosulfan and lambda cyhalothrin at 24 HAT.
Cashew, Contact toxicity, Insecticides, Apis cerana indica, Tetragonula iridipennis, Buprofezin, Thiamethoxam, Carbosulfan, Lambda cyhalothrin, Imidacloprid, Chlorpyriphos, Profenophos
