Field Evaluation of Some Insecticides Against Cutworm and White Grub in Potato

摘要

Insect pests attacking potato have been considered as a major constraint in achieving higher productivity. Among those, white grabs of several species such as Holotrichia spp., Melolontha spp., Brahmina spp., Adoretus spp. and Anomala spp. of family Scarabaeidae damage the tubers by tunneling through them affecting their quality. Besides white grub, there are two important spp. of cutworms, Agrotis ipsilon (Hufn) and A. segetum associated with potato crop inflicting heavy damage in Kashmir. The judicious pesticide use by timely application seems to be sound and rational approach in alleviating pest damage and can be easily adopted as a component of Integrated Pest Management (IPM) programme. Many workers have tested various insecticides, applied before sowing and as seed treatment in different crops against white grub in different regions (Yadava et al., 1911; Nath and Srivastava, 1981). However, the present studies were undertaken to investigate the efficacy of some insecticides as post sown foliar sprays against white grub / cut worm infesting potato under rainfed conditions.