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Crop Protection :: Oil Seeds :: Pest of Castor

Thrips: Retithrips siriacus: Scirtothrips dorsalis

Symptoms of damage:

  • Terminal leaves silvered
  • The injury results in development of dull yellowish-green patches on the upper leaf surface and brown necrotic areas of the lower surface
  • Under heavy infestation the leaves curl and plants get stunted

 Identification of the pest:

  • Nymph: Pinkish (Retithrips siriacus); yellowish (Scirtothrips dorsalis)
  • Adult: Black with fringed wings

 Management:

  • Insecticides such as dimethoate, methyl-o-demeton at the rate of 2.0 ml/litre of water give control of thrips effectively

 

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