Capsule borer: Helicoverpa armigera Symptoms of damage
- It feeds on flower heads and seeds of flower heads.
- Larva is greenish with dark brown grey lines along the sides of body.
- Adult moth is medium size; brown with ‘V’ shaped speck and dull black border on the hindwing.
Management
- Hand picking of the larvae.
- Use of pheromone traps at 12/ha.
- Spray NPV 250 LE / ha.
- Use of Bt spray formulation at 2g/2ml per litre of water
- Use of egg parasitoids Trichogramma chilonis at 5cc/ha