Symptoms of damage
- Bore holes on the buds, flower or pods
- Infested pods and flowers are webbed together.
Identification of the pest
- Larva - Greenish white with brown head. It has two pairs of dark spots on the back of each segment
- Adult - Forewings- light brown colour with white markings; Hindwings – white colour with brown markings at the lateral edge
Management:
- ETL: 3 larvae/plant
- Pheromone traps for Helicoverpa armigera 12/ha
- Mechanical collection of grown up larva and blister beetle
- Ha NPV 3 x1012 POB/ha in 0.1% teepol
- Apply any one of the following insectcides:
- Azadirachtin 0.03%WSP 2500-5000 g/ha
- Bacillus thuringiensis serovar kurstaki (3a,3b,3c) 5%WP 1000-
1250 g/ha
- Emamectin benzoate 5%SG 220 g/ha
- Indoxacarb 15.8%SC 333 ml/ha
- NPV of H. armigera 2% AS 250-500
- Quinalphos 25%EC 1400 ml/ha
- Spinosad 45%SC 125-162 ml/ha
- Phosalone 0.07%(Spray fluid 625 ml/ha)
(Note : Insecticide / Ha NPV spray should be made when the larvae are upto third instar)
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