Evaluation of Novel Insecticides for Controlling Mango Leaf Hopper (Amritodes atkinsoni) in Mango (Mangifera indica) Cultivation

The study was carried out to the evaluation of newer insecticides molucules against mango leaf hopper, Amritodes atkinsoni Leth. infesting in Maldah. The treatments Thiomethoxam 25 WG (0.3 gm/L) and Imidacloprid 17.8 SL (0.3 ml/L) were found highest per cent reduction (87.74% and 86.08%) against mango leaf hopper. Moreover, Clothianidin 50 WDG (0.25 gm/L), Difentheuron 50 WP and Acetamiprid 20 SP (0.5 gm/L) were next effective treatments against mango leaf hopper i.e. 81.22%, 79.98% and 77.73%, respectively. The other treatments viz, Cypermethrin 10 EC (1.5 ml/L), Buprofezin 25 EC (1.0 ml/L) and Azadirachtin 3000 PPM (3 ml/L) were found least effective against mango leaf hopper over control. The significantly highest fruit yield and benefit cost ratio was also found in treatment Thiomethoxam 25 WG (232.67 kg/tree and 4.33:1) in compression to farmer’s practice (192.43 kg/tree and 2.16:1).