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

1. Aphid - Aphis gossypii Glover. (Aphididae: Hemiptera)

Damage

• Both nymphs and adults desap the tender shoot and leaves causing yellowing curling and crinkling of leaves.
Bionomics

• Two forms of females are valuable in an aphid colony.
  
• The alate (winged) and apterous (wingless) forms which can reproduce parthenogenetically and viviparously, giving birth to 10-20 nymphs per day.
  
• The nymphs become adults in another weeks time.
Management

• Spray chlorpyriphos at 2 ml/litre on agathi leaves, clip off excess infested agathi leaves.