Groundnut plants wilting and dying in patches, white grubs in the soil

Patches of wilting plants that pull out easily because the roots are eaten, with fat white C shaped grubs in the soil, is white grub, the larva of the beetle that emerges with the first monsoon rains. They feed on roots underground so above ground sprays do little once damage shows. The most effective control is community action at beetle emergence, when adults swarm to host trees like neem and khejri on the first rains, the village collects or sprays them on those trees to stop egg laying. In the soil, a recommended seed treatment insecticide at sowing and applying a recommended entomopathogenic fungus or insecticide with irrigation are the practical options, so much of this is a planning decision. Deep summer ploughing exposes grubs to birds and heat. Confirm the grub species and current control with your KVK or Agriculture University, Jodhpur or SKNAU Jobner.