Red Palm Weevil (RPW)

  • Common name :
    Red Palm Weevil

  • Scientific name :
    Rhynchophorus Ferrugineus

  • Crops :
    Coconut, Oil Palm, Date Palm

RPW Life Cycle

Identification of the pest

  • Egg :
    Oval and creamy white in colour. Eggs laid in scooped out small cavities, wounds and other cut injuries on the trunk
  • Grub :
    Light yellowish grub without legs. Stout, fleshy and apodous with a conical body bulged in middle and tapering towards the end
  • Pupa :
    The full frown larva pupates inside the stem and fibrous cocoon made out of fibrous strands
  • Adult :
    Reddish brown weevil has six dark spots on thorax. Male has conspicuous long snout has a tuft of hairs.

Identification of the pest

  • The hole can be seen on the stem with chewed up fibres protruding out.
  • Many times reddish brown liquid can be seen oozing out from the hole.
  • The grubs cause damage inside the stem or crown by feeding on soft tissues and often cause severe damage especially when a large number of them bore into the soft, growing parts. In case of severe infestation the inside portion of trunk is completely eaten and become full of rotting fibres.
  • In case of young palms the top withers while in older palms the top portion of trunk bends and ultimately breaks at the bend (wilting).
  • Sometimes the gnawing sound produced by the feeding grubs inside will also be audible.
  • In the advanced stage of infestation yellowing of the inner whorl of leaves occur. The crowns falls down or dry up later when palm is dead

Trap Method : Pheromone Trap

  • Controlling Method : Use AXON IPM Pheromone lures and traps.
  • Number of Pheromone Traps Required : Install Pheromone traps 1-2 per acre
  • Type of Trap : Bucket Trap
  • Install Pheromone trap @ one or two trap per ha
  • Step 1:
    Specialized buckets with 3 of 4 holes are made, the bucket is wound with coconut fibre/ jute sack, so that the pests can enter.
  • Step 2:
    The lure is suspended inside the bucket and add one liter of soap water.
  • Step 3:
    The bait buckets are placed at sites in the farm, where infestation is seen most.
  • Step 4:
    After a week the water is checked for the catch & refilled to prevent mosquitoes from breeding.
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