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crop protection :: Lily

Tulip bulb aphid: Dysaphis tulipae 

Symptoms of damage

  • Cripple the young growth and distort the general look of the plants.
  • Both nymphs and adults suck the sap from the leaves.
  • Results in pale yellowing of leaves.
  • Curling of leaves.
  • Plants begin to droop.

Identification of the pest

  • Grey with wax appearance.
  • Cluster under bulb coats. 

Management

  • Spray dimethoate 30 EC 2ml/lit or methyl demeton 25 EC 2ml/lit or malathion 2ml/lit.
  • Release first instar larva of green lace wing fly.
  • Conserve predator like Aphelinus sp parasitizing a green peach aphid
aphid_sm
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