Pulse beetle (Callosobruchus chinensis) of Chickpea:
Identification & Monitoring
- Adult beetle is 3 - 4 mm long, oval shaped chockalate coloured, body is pointed towards front.
- The adult emerges out of the pupa.
- The size of the adult beetle depends upon the size of the infested portion of the pulse.
- The attack is during July-August in the stores.
- The adult and grub feed on the grain by making a small hole.
- Infested stored seed can be recognized by the white eggs on the seed surface and the round exit holes with the 'flap' of seed coat.
- Kabuli types are particularly susceptible.
- Periodical exposure of the grain to sun helps to check infestations.
- Dry the pods to optimum kernel moisture level of about 7 %.
- Store the pods in polythene-lined gunny bags and fill the top surface of the bag with a layer of 3 cm ht. sand.
- Mouth of bags should not be stitched or closed to avoid germination loss.
- Care should be taken to avoid breakage
- Broken seeds should not be stored for long periods.
- Dust an inert substance such as ABCD (attapulgite-based clay dust)
- Dip the gunny bags in 10% malathion solution.
- Apply E.D.B. ampulses @ 3 ml/q of seed in air tight storage structure.
- Fumigation with aluminum phosphide protects the seed without affecting the viability.
- Dip the old gunny bags in boiled water for 15 minutes.
- Coat the seed with small quantities of vegetable oil or mix neem leaves in the stored grain.
Submitted by Prem.verma124 on Mon, 24/05/2010 - 11:15