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Gram pod borer - Kisan Suvidha
4675
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Gram pod borer

Gram pod borer

Gram pod borer: Helicoverpa armigera

Symptoms of damage

  • The young larvae feeds on the chlorophyll of young leaves and skeletonize it.
  • They feed voraciously on the foliage in early stage, may defoliate the plant and later they feed on flowers and pods.

Identification of the pest

  • Eggs:  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 and also has dark and pale bands.
  • 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

  • Deep summer ploughing
  • Install pheromone traps at a distance of 50 m @ 5 traps/ha for each insect pest.
  • Erect bird perches @ 50/ha.
  • Clip terminal shoots on 100 days of crop growth.
  • Setting of light traps (1 light trap/5 acre) to kill moth population
  • Dusting with Chlorpyriphos 1.5 % DP or fenvalerate 0.4% or quinolphos 1.5% @ 25 to 30 kg/ha
  • Spray with Chlorpyriphos 1.5 % DP @1200 ml/ha or quinolphos 25 EC @ 1.0 lit/ha.

 

Source-

  • TamilNadu Agritech Portal

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