Pulse beetle (Callosobruchus chinensis) of Chickpea

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Presentation transcript:

Pulse beetle (Callosobruchus chinensis) of Chickpea

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.

Damage 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.

Cultural Control 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)

Chemical Control 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.

Mechanical Control Dip the old gunny bags in boiled water for 15 minutes.

Biological Control Coat the seed with small quantities of vegetable oil or mix neem leaves in the stored grain.