Bud or Brown Weevil

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What is Bud Weevil?

Bud Weevils are known for their elongated snouts. They are usually small and herbivorous.

Scientific Name: Ochyromera artocarpi 

Life Cycle-

Egg: The gravid females make small cavities on young jackfruit buds and lay eggs in them singly. The egg is pearl white, smooth and oblong or oval. eggs hatch in 3 to 4 days.

Grub: The newly hatched legless grub is pale white with a pale brown head. It bores through the tissue in all directions and becomes mature in 12 to 15 days. The full-grown grub is whitish in colour. Its head is light brown but darker at the frontal region. This is the most damaging phase of the insect.

Pupae: The pupal stage lasts for 5 to 6 days. The adult emerges by boring a hole on the outer skin.

Adults: The adult is a small, active, greyish brown weevil is irregular in shape and has small bare spots. It is often found in groups feeding on the tissue inflorescence.

How does Bud Weevil damage? 

  • The adult feeds on leaves, stem & fruits.
  •  The larvae make more damage as it moves deeper in the endocarp portion of the fruits and feed on it.
  •  Adult weevil emerges from the dried fallen fruits by making small circular holes and female lays egg over plant tissues.
  • Severe infestation results in premature flower bud & fruit drop.

How to manage Bud Weevil?

Cultural MethodChemical Control
Collection and destruction of infested flower buds, fallen fruits checks the further spread of infestation by weevil. Proper sanitation of orchard should be followed.Pheromones trap can be placed.Foliar Application:Imidachloropid 17.8 SL @0.5 ml/litre. Chloropyriphos 50% EC + Cypermethrin 5% EC @1 ml/litre.Spinosad 45% EC @ 0.4 ml/litre.

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