Field diagnostic symptoms

• Defoliation, Feeding damage on flowers and seeds.

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Identification of insect pests :

• Eggs: Round, yellowish and singly laid. Larva: 2” long, greenish with dark brown gray lines and dark and pale bands. Chromorphism. Pupa: Obtect type, brown colour Adult: Forewing: Brown colour with a ‘V’ shaped speck . Hindwing: White with dull black border .

Egg and Larva Pupa Adult

Management

• Application of nuclear polyhedrosis virus (NPV) at 3 x 1012 POB /ha in evening hours at 7 and 12 weeks after sowing.
• Set up sex pheromone traps at 12/ha.
• Conservation and augmentation of natural predators and parasitoids.
• Release of egg parasitioid, Trichogramma chilonis at 6.25 cc/ha