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Agritech Archive

Production · Protection · Nutrients · Water
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Fruit borer, Deudorix isocrates

Symptoms of damage
Caterpillar bores into young fruits Feeds on internal contents (pulp and seeds) Fruit rotting and dropping
Symptoms of damage
Caterpillar feed on the leaves Defoliation
  • Caterpillar bores into young fruits
  • Feeds on internal contents (pulp and seeds)
  • Fruit rotting and dropping
  • Larvae - dark brown, short and stout, covered with short hairs
  • Adult - bluish brown butterfly
  • Female – V shaped patch on forewing
Management
Hand pick the larvae and destroy Early stage - spraying of 1.5ml monocrotophos or 2 ml of methyl parathion per litre of water Field release of parasitoids Trichogramme evanescens and Telenomus sp on eggs Brachymeria sp on larvae and Pterolus sp . on Pupae
  • Collect and destroy damaged fruits
  • Clean cultivation as weed plants serve as alternate hosts
  • Endemic areas - grow less susceptible varieties
  • Adopt ETL (5 eggs/plant)
  • Cover the fruit with polythene bags when the fruits are up to 5 cm
  • Use light trap @ 1/ ha to monitor the activity of adults
  • Insecticides: malathion 50 EC 0.1% or two rounds, one at flower formation and next at fruit set.
  • Flowering stage - spray NSKE 5% or neem formulations 2 ml/1
  • Apply dimethoate 30 EC 1.5 ml/1.
  • Release Trichogramma chilonis at one lakh/acre.

Citrus butterfly , Papilio demolious

  • Caterpillar feed on the leaves
  • Defoliation
  • Larvae Early stage larva resembles bird dropping Grown up larva – cylindrical, stout, green and brown lateral bond Adult - Dark brown swallowtail butterfly with numerous yellow marking
  • Early stage larva resembles bird dropping
  • Grown up larva – cylindrical, stout, green and brown lateral bond
  • Adult - Dark brown swallowtail butterfly with numerous yellow marking
  • Hand pick the larvae and destroy
  • Early stage - spraying of 1.5ml monocrotophos or 2 ml of methyl parathion per litre of water
  • Field release of parasitoids Trichogramme evanescens and Telenomus sp on eggs

Brachymeria sp on larvae and Pterolus sp . on Pupae