The result on efficacy of module 4 (first spray at panicle emergence with spinosad 0.004%, second spray of thiamethoxam 0.008% after 21 days of 1st spray and third spray (need based) of neem azal 1000 ppm when fruits were at pea size) was found to be most effective in reducing (5.13 hoppers/panicle/week, 63%) mango hopper population in Zone III of Bihar. Next best was module 3 (first spray of thiamethoxam 0.008% at panicle emergence, second spray of profenophos 0.05% after 21 days of 1st spray and third spray (need based) of carbaryl 0.15% when fruits were at pea size) (5.84 hoppers/panicle/week, 58%). While maximum (113.68/100 panicle) fruit set/100 panicle at marble stage was recorded in module 4. Considering yield and cost-benefit ratio against management of mango hopper over the period of investigation, module 4 (88.20 kg/tree, 49%) was found most economical and it was followed by module 3 (80.38 kg/tree, 45%).
Amritodus atkinsoni, Mangifera indica, Management modules
