Damage Symptoms:

Leaf Curling and Yellowing: Aphids feeding on plant sap can cause leaves to curl, twist, or bend. Heavily infested leaves may turn yellow and eventually wilt. 

Stunted Growth: Aphids weaken plants by extracting nutrients, leading to reduced vigour and slow growth. 

Honeydew and Sooty Mold: Aphids secrete honeydew, a sugary substance that can become covered in sooty mould, a black fungal growth. This can reduce photosynthesis and further damage the plant. 

Malformed Flowers and Fruits: Aphids feeding on flower buds and fruits can cause malformed or aborted blooms and fruit. 

Ants: Honeydew attracts ants, which may protect aphids from natural enemies. 

Target crops:

Aphids are a broad group of sap-sucking insects: They feed on various plants, including vegetables, fruits, flowers, and ornamental plants. 

Common examples of aphids include: Black bean aphid, cotton aphid, green peach aphid, and woolly apple aphid. 

Aphids can be found on different parts of the plant: Shoots, flower buds, and the undersides of leaves are common locations. 

They can also infest roots: Some aphid species feed on roots, causing similar symptoms to foliar infestations.