Insect Pests of Fruit, Plantation, Medicinal & Aromatic Crops (2+1)

2. Grey weevil

2. Grey weevil - Myllocerus subfasciatus G.M., M.discolor Fab and M.viruidu Fab. (Curulionidae: Coleoptera.)

Damage

• Adult weevil cause notching of leaf margins. Grub feeds on roots resulting wilting of plants.
Bionomics

• M.Subfasciatus – Brownish weevil;
  
• M.discolor – Brown with white spot on elytra; .
• M.viridanus – Small light green weevil.
Management

• Collect & destruct the adult weevils
• Apply carbofuran 3 G at 15 kg/hectare at 15 days after planting.
• Dust lindane 1.3D at 25kg/ha to kill grubs.
• Spray carbaryl 50WP at 2g/1 on plants.