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Crop Protection :: Pests of Guava

Green Scale: Coccus viridis 

Symptoms of damage

  • Nymphs and adults suck the sap from leaves
  • Yellowing of leaves.

Identification of pest

  • Nymph: Pale lemon yellow.
  • Adult – green colour, flat and oval shaped soft scale

Management

  • Prune and destroy the infested shoots at initial stage of infestation.
  • After two weeks release 20 predator beetles viz.,C. montrouzieribeetle per tree.
  • Encourage parasitoids viz., Aneristis sp Coccophgagus cowperi, C. bogoriensis
Coffee- Green coffee scale (Coccus viridis) on the back of a leaf. Note the black sooty mould

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