Submitted by sabitha on Tue, 06/01/2009 - 15:58
Posted in
- Biotic stress
- Grapholita critica
- Insect pest
- Protection technology
- Leaf webber
- Pigeonpea
- India
- Icrisat
- English
- Image
Discription
- Inconspicuous brown moth (Figure).
- Eggs are laid in clusters of about ten, on buds and young leaves.
- Cream-yellow larvae pupates in the webs.
- The life-cycle takes 3-4 weeks.
Damage Symptoms
- Leaflets (Figure), flowers and pods are held together to form a web.
- Larvae feed from inside these webs.
- Growth of the terminal shoot is impaired if infested.
- Infestations may begin as early as seedling stage and continue during flowering and podding.
- Late infestation may also result as pod borer.
Control
- Impact of damage is negligible.
- In case of severe infestation application of systemetic/contact insecticide with fumigent action (monocrotophos @ 1.5//nuvan @ 1.0 ml/litre) can provide effective control of leaf webbers.
Leaf Webber Symptoms
Leaf Webber Adult
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