Identification
- Eggs are yellowish-white with greenish tinges.
- The caterpillars are 7-12 mm in length, pale yellowish green in color with fine erect back hair scattered all over the body.
- Adults are 8-10 mm long greyish-brown in color having pale whitish narrow wing inner yellow margins.
- The adult female lays eggs on the leaves either singly or in groups.
- White markings along the back of the fore wings which when folded from a diamond-shaped pattern in adult diamondback moth.
Damage
- Small slender green caterpillars on emergence feed on the leafs epidemics and later make holes in the leaves.
- Severely affected leaves are completely skeletonized.
Control
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- For the prevention of diamondback moth, bold mustard should be sown in 2 lines after every 25 lines of cabbage/Cauliflower.
- Spray the crop with Profenofos 50% EC 500 ml/acre or Profenofos 40% EC + cypermethrin 4% EC @ 400 ml/acre or
- Spinosad 25% SC100 ml/acre or Indoxacarb @ 300 ml/acre or Emamectin Benzoate 5% SG @ 100 gm/acre Spray at fortnight intervals starting from 25 days after transplanting to control the pest.
- For biological control Beauveria bassiana @ 1 kg/acre.
- Note: Mix the sticker with each spray.
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