PESTS OF GINGELLY :: Major Pests :: Leaf Webber

Distribution and status: India, Africa, South Europe, Malta, Burma, Bangladesh, Indonesia, Sri Lanka   and U.S.S.R.

Host range: Sesame, Antirrhinum and Duranta.

Damage symptoms: Larva webs the top leaves together and bore the tender shoots in the vegetative phase.  Flowers and young capsules are bored at reproductive stage.

Bionomics: Moth is brown with yellowish brown wings.  It lays eggs on tender parts of plants. The egg period is 4-5 days. Fully grown pale green larva with black head and dots all over the body measures 20 mm in length.  The larval period is 11-16 days.  It pupates in leaf folds in a white silken cocoon for 4-7 days.

ETL:  2 webbed leaves/sq.m. (or) 10% damage.

Management

1. Culture of sesame like EH7, 57, 84, 105, 106 and 156 should be encouraged as these are observed to be completely resistant against A. catalaunalis.
2. Dusting the crop with 2% parathion.
3. Spraying with dimethoate 30 EC  500 ml or methyl parathion 50 EC 500 ml or  endosulfan 35 EC 1.25 L or  carbaryl 50% WP I kg in 700 L water per hectare.