Identification
- Eggs are yellowish-white with greenish tings.
- The caterpillars are 7-12 mm in length, pale yellowish green in colour with fine erect back hair scattered all over the body.
- Adults are 8-10mm long greyish-brown in colour 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 diamond back 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 skletonised.
Control
- For the prevention of diamond back moth, bold mustard should be sown in 2 lines after every 25 lines of cabbage/Cauliflower.
- Spray the crop with Profenofos 50% EC (3 ml/lit) or Spinosad 25% SC (0.5 Ml/litre ) or Indoxacarb (1.5 Ml/Litre) of water at fortnight intervals starting from 25 days after transplanting to control the pest.
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