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Gram pod borer - Kisan Suvidha
4287
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Gram pod borer

Gram pod borer

Gram pod borer: Helicoverpa armigera

Symptoms of damage 

  • Defoliation in early stages
  • Larva’s head alone thrust inside the pods and the rest of the body hanging out.
  • Pods with round holes
  • Small spots appear on the leaves. These spots increase in size and produces brown ring. In ring, lines are purple in colour.
  • When the disease increases,these spots become large and  interconnected with each other

Identification of the pest

    • Eggs – are spherical in shape and creamy white in colour, laid singly
    • Larva – shows colour variation from greenish to brown. Green with dark brown grey lines laterally 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. Fore wing grey to pale brown with V shaped speck.Hind wings are pale smoky white with a broad blackish outer margin.

Management

    • For pod borers, raise one row of sunflower as intercrop for
      every 9 rows of pigeon pea and plant maize as border crop.
    • Pheromone traps for Helicoverpa armigera 12/ha
    • Bird perches 50/ha
    • Mechanical collection of grown up larva and blister beetle
    • Ha NPV 3 x1012 POB/ha in 0.1% teepol
    • Apply any one of the following insectcides:
      • Azadirachtin 0.03 % WSP 2500-5000 g/ha
      • Bacillus thuringiensis serovar kurstaki (3a,3b,3c) 5%WP1000-1250 g/ha
      • Dimethoate 30% EC 1237 ml/ha
      • Emamectin benzoate 5% SG 220 g/ha
      • Indoxacarb 15.8% SC 333 ml/ha
      • Chlorantraniliprole 18.5 SC 150ml/ha
      • Spinosad 45%SC 125-162 ml/ha
      • NSKE 5% twice followed by triazophos 0.05%
      • Neem oil 2%
      • Phosalone 0.07%
        (Spray fluid 625 ml/ha) Note : Insecticide / Ha NPV spray

 

Source-

  • TNAU Agritech Portal.

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