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.

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