Efficacy of insecticides against mango hoppers and fruit yield.
Samanta A., Gosh A., Hembram T. K., Patra S., Somchowdhury A. K.
Author Affiliation: Department of Agril. Entomology, B.C.K.V., Mohanpur, Nadia 741 252, India.
Annals of Plant Protection Sciences 17 : 243-244
Abstract : A field experiment was conducted in Mohanpur, West Bengal, India, during 2004-05 to test the efficacy of new insecticides against mango hoppers Amritodus atkinsoni, Idioscopus clypealis and Idioscopus neveasparsus. The treatments comprised imidacloprid (0.005 and 0.01%), thiamethoxam (0.008 and 0.016%), monocrotophos (0.05 and 0.10%) and the control. All the treatments were significantly superior in reducing hopper population and increased yield compared to the control. The best result was observed with 0.016% thiamethoxam that resulted in the lowest mean hopper population (4.53) and highest yield (180 fruits per tree and 72 kg per tree) including highest cost-benefit ratio (2.89).