Larval attack
Secondary symptoms - The grub feeds on roots and newly formed rhizomes. In young plants and seedlings; attack by white grubs causes wilting which is characterized by an initial purpling of the leaves; followed by death of small plants and reduced vigour or lodging of larger ones. Affected crops are unfit for marketing. Prevention: Soil application of neem cake @40 kg/ha before sowing can control an extent of the attack.