Identifying Common Pests in East Africa
What You’ll Learn
Always check the undersides of leaves when scouting — that is where most sucking pests hide and feed.
Yellow sticky traps are a cheap, reliable way to monitor flying pests like whiteflies before populations build.
Catching a pest problem early is the difference between a small cost and a crop-threatening outbreak.
Sucking Pests: Aphids and Whiteflies
Aphids gather on leaf undersides and growing tips, causing curled leaves, sticky honeydew deposits, and stunted growth. Whiteflies look like tiny white moths that burst into clouds when you disturb the plant. Both carry viral diseases that can sweep through an entire field — early detection is not optional here, it is essential.
Spider Mites
Spider mites love hot, dry weather and leave fine webbing on leaf undersides. Infested leaves turn yellow and speckled, then drop early. Populations can explode fast — a handful of mites can grow into thousands within two weeks. Overhead irrigation or simply spraying water on leaf undersides helps knock back numbers.
Fruit Flies and Bollworms
Fruit flies leave small puncture marks on ripening fruit and lay eggs inside the flesh. Baited traps help you catch rising adult populations before damage becomes visible. Bollworms and caterpillars chew holes in fruit and leaves and leave characteristic frass droppings near entry points. Check early in the morning when caterpillars are most active on the plant surface.
Monitoring and Early Action
Hang yellow sticky traps at crop canopy height to catch flying pests and give you advance warning of building populations. Walk your fields weekly, checking at least 20 plants in several locations. Record what you find and compare it week to week — a rising trend is your signal to act before real economic damage sets in.