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Fruit Borer: Helicoverpa armigera

Symptoms of damage:

  • Young larvae feed on tender foliage
  • Mature larvae bore circular holes
  • Thrust only a part of its body into fruit and eat the inner content
Larval damage Larval damage Adult damaged fruit

Identification of pest:

  • Eggs: Eggs are sculptured and creamy white in colour, laid singly
  • Larva: Shows colour variation from greenish to brown. It has dark brown grey lines on the body with lateral white lines and also has dark band 
  • Pupa: Brown in colour, occurs in soil, leaf, pod and crop debris 
  • Adult: Female light pale brownish yellow stout moth, Male – Pale greenish moth V shaped speck.
    • Forewing: olive green to pale brown with a dark brown circular spot in the centre
    • Hindwing:  is pale smoky white with a broad blackish outer margin

Management:

  • 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 1:16 rows
  • Setup pheromone trap with Helilure at 12/ha
  • Collection and destroy of damaged fruits and grown up caterpillars.
  • Release Trichogramma pretiosum @ 1 lakh/ha at an interval of 7 days starting from flower initiation stage.
  • Spray HaNPV 1.5 x 1012 POBs/ha.
  • For Helicoverpa armigera: HaNPV 1.5 x 1012 POBs/ha i.e. NPV of H. armigera  0.43%  AS @ 3.0 ml/lit or 2 % AS @ 1.0 ml per lit
  • For Spodoptera litura: Sl NPV 1.5 x 1012 POBs/ha
  • Provide poison bait with carbaryl 50 WP 1.25 kg, rice bran 12.5 kg, jaggery 1.25 kg and water 7.5 lit/ha
  • Spray Bacillus thuringiensis 2g/lit or any one of the following insecticide 
  • Spray Azadirachtin 1.0 % EC (10000 ppm) 2.0 ml/ lit. or apply Bacillus thuringiensis 2g/lit. during evening hours.

Egg Larva
Pupa
Adult

Insecticide Dose
Indoxacarb 14.5 SC 8 ml/ 10 lit
Flubendiamide 39.35 SC 2 ml/10 lit
Flubendiamide 20 WG 2 g/10 lit
Novaluron 10 % EC 7.5 ml/10 lit
Phosalone 35 % EC 13 ml/10 lit
Quinalphos 25 % EC 1.0 ml/ lit
Chlorantraniliprole 18.5 SC 3.0 ml/ 10 lit
Cyantraniliprole 10.26 OD 18 ml/ 10 lit
Updated on October, 2022

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