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Ear Head caterpillar – Kisan Suvidha
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Ear Head caterpillar

Ear Head caterpillar

Ear Head caterpillar: Helicoverpa armigera

Symptom of damage:

  • Earheads are partially eaten with chalky appearance
  • Feacal pellets are visible within the ear heads

Identification of the pest:

  • Egg: Spherical in shape 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
  • Pupa: Brown in colour, occurs in soil, leaf, pod and crop debris
  • Adult:  Light pale brownish yellow stout moth. Forewings are olive green to pale brown with a dark brown circular spot in the centre. Hind wings are pale smoky white with a broad blackish outer margin

Management:

ETL: 2/earhead

  • Set up of light traps till mid night to monitor, attract and kill adults of stem borer, grain midge and earhead caterpillars
  • Set up sex pheromone traps at 12/ha to attract male moths of Helicoverpa armigera from flowering to grain hardening.
  • Two applications of NPV at 10 days interval at 1.5 X1012 POB along with crude sugar 2.5 kg + cotton seed kernel powder 250 g on the earheads is effective in educing the larval population of Helicoverpa

 

Source-

  • TNAU Agritech Portal

 

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