Jute Stem Weevil: Apion corchori (Apionidae: Coleoptera)

Damaging stage: adult

Damaging symptoms: damage to the quality of fiber by making hole

Identification

Egg: make holes in the stem and lay eggs, eggs are generally laid at” the base of the petiole or in the basal region of the stem.

Grub: Grub damages the fiber bundles and as a result of injury, mucilaginous and gummy substances produce the stem and produced in the stem produced knot in the fiber. Fiber has a knot called knotty fiber.

Adult: Brown or dull color, white setae on the body.

Management

• The pest may be suppressed by the removal and destruction of infested plants at the time of thinning the crop and by collecting and destroying the stubble after harvest.
• Spray 5 kg of carbaryl 50WP in 625 L of water per ha.