Jute Stem Weevil: Apion corchori (Apionidae: Coleoptera)
Damaging stage: adult
Damaging symptoms: damage to the quality of fibre 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.
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Grub: Grub damage the fiber bundles and a resultsof injury,mucilaginous and gummy substance produced n the stem and produced in the stem and produced knot on the fiber. Fiber having knot called knotty fiber.
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Adult: Brown or dull color, white setae on 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.