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Corn worm/ Earworm – Kisan Suvidha
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Corn worm/ Earworm

Corn worm/ Earworm

Corn worm/Earworm: Helicoverpa armigera

Symptom of damage:

  • Larva feeds on silk and developing grains

Identification of the pest:

  • Eggs: Spherical in shape and creamy white in colour
  • 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:

  • Set up of light traps
  • Set up sex pheromone traps at 12/ha
  • 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 ear heads
  • Apply any one of the followings on 18th day after panicle emergence
    • Carbaryl 10 D 25 kg/ha
    • Malathion 5 D 25 kg/ha
    • Phosalone 4 D 25 kg/ha

 

Source-

  • TNAU Agritech Portal

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