Pest Management: Symptoms
Chilli - Gram caterpillar: Helicoverpa armigera
- Symptoms of Damage:
Early instar feeds on foliage
Grown up larvae mainly bore into the fruits
- Identification of Pest:
Larva: Shows colour variation from greenish to brown
Adult: Female is brownish yellow stout moth, Male is light greenish in colour with V shaped markings.
Eggs: Are spherical in shape and creamy white in colour, laid singly
Pupa: Brown in colour, occurs in soil, leaf, pod and crop debris
Collect and destroy the infected fruits and grown up larvae
Setup pheromone trap with Helilure at 15/ha
Six releases of Trichogramma 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 1.5x1012 POB/ha along with cotton seed oil 300 g/ha to kill larvae.
Spray carbaryl 50 WP 2 g/lit or B. thuringiensis 2 g/lit
Provide poison bait with carbaryl 1.25 kg, rice bran 12.5 kg, jaggery 1.25 kg and water 7.5 lit/ha or spray any one of the follo
Emamectin benzoate 5 % SG @ 4 g/10 lit.
Flubendiamide 20 WDG@ 6.0 g /10 lit
Indoxacarb 14.5 % SC @ 6.5 ml/10 lit.
Novaluron 10 % EC @ 7.5 ml/10 lit.
Spinosad 45 % SC @ 3.2 ml/10 lit.
Thiodicarb 75 % WP @ 2.0 g/lit.
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