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Crop Protection :: Pests of Mango

Mango nut weevil: Sternochaetus mangiferae

Symptoms of damage

  • Grub makes zigzag tunnels in pulp
  • Eats unripe tissue and bore into cotyledons
  • Fruit dropping at marble stage
  • oviposition injuries on marble sized fruits.
  • Tunnelled cotyledons in mature fruit by grubs.

Identification of pest

  • Grub - A full grown grub is legless, fleshly and yellow with dark head.
  • Dark weevils after emergence remain inactive, hidden in the cracks and crevices on the trunk
  • Adult - Adult is dark brown with a short snout.
Symtom Grub on mango Grub Adult on Mango

Management

  • Collect and destroy the fallen fruits
  • Maintain hygiene in storage place
  • Spray any one of the following pesticides
  • Acephate 75 SP 1.5g/lit. or Lambdacyhalothrin 5 EC 2.5 ml/lit at marble size stage of fruits, Phosalone 35 EC 2 ml/lit against Mango nut weevil  

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