Bhendi fruit borer: Helicoverpa armigera
Symptoms of damage:
- Feed on the flowers
- Circular boreholes on fruits
- Larva thrust only part of their body inside the fruit feed
Identification of pest:
- Eggs: Are spherical in shape and creamy white in colour, laid singly
- Larva: Shows colour variation from greenish to brown
- Pupa: Brown in colour, occurs in soil, leaf, and pod
- Adult: Female brownish yellow stout moth, Male is pale greenish in colour with V shaped markings
- Collect and destroy the infected fruits and grown up larvae
- Grow simultaneously 40 days old American tall marigold and 25 days old tomato seedling at 1:10 rows to attract Helicoverpa adults for egg laying.
- Setup pheromone trap with Helilure at 15/ha
- Six releases of T. chilonis @ 50,000/ha per week coinciding with flowering time
- Release Chrysoperla carnea at weekly interval at 50,000 eggs or grubs/ha from 30 DAS
- Spray HaNPV at 1.5×1012 POB/ha along with cottonseed oil 300 g/ha to kill larvae.
- Spray carbaryl 50 WP 2 g/lit or B. thuringiensis 2 g/lit
- Do not spray insecticides after maturity of fruits.
- TamilNadu Agritech Portal