Management of Little Leaf in Brinjal

26/01/2018Posted on

LITTLE LEAF IN BRINJAL

SYMPTOMS:-

  • The leaves of the infection in the early stages are light yellow in colour.
  • The leaves show a reduction in size and are malformed.
  • Disease affected plants are generally shorter in bearing a large number of branches, roots and leaves then healthy plants.
  • The petioles, axil of leaves and internodes get shortened thus giving the plants a bushy appearance.
  • Flower parts are deformed leading the plants to be sterlile.
  • Infected plants do not bear any fruits.

CONTROL:-

  • Use barriers of trap crops.
  • Remove and destroy infected plants.
  • The sowing time can be adjusted to avoid the main flight of the beet leaf hopper.
  • Spraying of Dimethoate 2ml per litre of water has been recomended for vector control.

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Shoot and Fruit Borer in Brinjal

09/01/2018Posted on

Identification

  • The female moth lays eggs individually on the shoots of young brinjal plants.
  • Creamy-white eggs are laid singly or in groups on the undersides of the leaves, stems, flower bunds or the base of the fruit.
  • The young caterpillar id 15-18mm long, dull white and turns light pink as it matures.
  • The adult moth is white with a pink or bluish tinge and brownish on its wings.
  • The newly hatched larva prefers to bore directly into the fruit.
  • When feeding is complete pupation occurs on stems, dried shoots, or among fallen leaves.
  • Multiple over lapping generations occur in warm climates.

Damage

  • The damage of the fruit starts soon after transplanting and continues till harvesting of the fruits.
  • Short pinkish larva of the pest initially bore into the terminal shoots resulting in withering and drying of the shoot.

Control

  • Continuous cropping of brinjal on the same piece of land should be avoided.
  • Fruits showing boring should be picked and destroyed.
  • Spray the crop with cypermethrin 25% EC (0.5ml/lit) or Cloropyrifos 20 % EC (4 mill ) of per litre water at fortnight intervals starting from 35 days after transplanting to control the pest.
  • Best results are obtained when all the affected fruits are removed before spraying.

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