Field diagnostic symptoms

• Defoliation, Feeding damage on flowers and seeds.

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

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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