Paddy aphid:

The aphids are sporadic pests of paddy in humid areas. The wingless adults are rusty to dark brown in colour and nymphs are pink. Both nymphs and adults suck sap from leaves and un-ripened grains and cause yellowing of leaves. Severe infestations reduce the vigor of plants and as a result chaffy earheads may be produced.

Management:

• Avoid excess use of nitrogen.
• Protect predatory lady bird beetles from broad spectrum pesticides.