Common Pests and Diseases Affecting Tomato Farming


It is strongly recommended that farmers regularly scout their crops.

1. American bollworm – This is the larvae stage of a moth. It lays several eggs on young fruits that bear holes on the fruits upon them hatching. To control this, spray with a good insecticide.

2. Whiteflies – These are small white insects that hide behind the leaves. They spread viral diseases to the tomato crop. It is recommended to spry with insecticide.

3. Leafminers – This pest eats the leaves, stem and fruits, sucking the juice. The fruits rot and the field dries up. To control use biological alternatives which feed on the leaf miner and by spraying the leaves.

4. Aphids – This pest removes sap from the plant. This can easily be controlled by spraying neem oil.

 In general to control pests, a farmer needs to weed early, use certified seeds and use spray with effective insecticides.


1. Late and early blight – The disease is bacterial and common during rainy seasons. The leaves and fruits begin to develop dark spots and the fruit begins to rot. To control this use certified seeds, adhere to crop rotation protocols and spray with effective fungicides.

2. Furasium wilt – Found in the soil and common during high temperature seasons. The lower leaves start yellowing and wilting leading to the death of the entire plant. It is advisable to fumigate soil well before planting.

3. Powdery mildew – It forms white mold on leaves which then turn yellow and dries. To control, remove and dispose affected plants and spray with fungicides.

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