Aphids: Insecticidal soap is the safest and most effective control strategy. Spray with dimethoate 30 EC @ 2 ml/l or imidacloprid 17.8 SL@ 0.5 ml/l.

Caterpillars: Bacillus thuringiensis (BT) insecticide 1 g/l or Neem-based biological insecticides like Azadirachtin 1 % @ 3 ml/l. If the incidence is severe spray with indoxacarb.Spraying late in the evening when caterpillars and adult moths are active, 14.5 SC @ 0.75 ml/l.

Grasshoppers: Spray with acephate 75 SP @ 1.5 g/l or lambda cyhalothrin 5 EC @ 1 ml/l.

Mealy bugs: Spray with profenofos 50 EC @ 1 ml/l or imidacloprid 17.8 SC @ 0.5 ml/l. Excess concentration/dose or spraying of the chemicals when the temperature is high may lead to the burning of leaves and flowers.

Mites: Spray with chemicals like dicofol @ 3 ml/l or wettable sulphur @ 3 g/l.
Scales (Coccus hesperidium): Spray pongamia oil 1%. Spray insecticides like dimethoate 30 EC @ 2 ml/l or acephate 75 SP @ 1 g/l.
White flies: Feeding by nymphs and adults of white flies results in yellowing of leaves and weakening of plants.

Management: Spray with dimethoate 30 EC @ 2 ml/l or thiamethoxam 25 WG @ 0.3 g/l at the onset of attacks.

Leaf spots: Remove all dead leaves and reduce crowding between plants. Discard infected plants. Try to avoid overhead sprinkling and late afternoon watering.
Root rot: (Rhizoctonia, Pythium, and Phytophthora): Remove and destroy symptomatic plants as soon as they are found. Avoid overwatering. Avoid planting in heavy soils.