1)Maggots: Infestation observed in January-February Month. They feed on roots because browning of leaves. Base of plant become watery.
If infestation is observed, apply Carbaryl@4kg or Phorate@4kg to the soil and give light irrigation. Or Apply Chlorpyriphos @1.5Ltr/acre along with irrigation water or sand.
2)Thrips: If not controlled properly can cause yield loss up to 50%. Mostly observed in dry weather. They suck sap from the foliage and results in curling of leaves, leaves become cup shaped or curved upward.
To check severity of thrips incidence, keep blue sticky traps @6-8 per acre. If infestation observed in field take spray of Fipronil (Reagent)@30ml/15Ltr water or Profenofos@10ml /10Ltr water by 8-10days interval.