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Pest Management: Symptoms

Chilli  -  Gram caterpillar: Helicoverpa armigera

Pest management
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
Management: 
 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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