Divisi
Chilli leaf curl virus
· Viral
Photo: Kembangraps · CC0
Chilli leaf curl is a virus disease of chilli, sweet pepper and tomato, carried from plant to plant by tiny white flies called whitefly. A virus is a germ that lives inside the plant for good — you cannot spray a cure onto a plant once it is infected — so the whole fight is about keeping the virus out of your young plants and stopping the whiteflies that spread it. It hits hardest in the hot, dry months when whiteflies are thickest, and a plant caught while it is young may never set a decent chilli.
Kembangraps · CC0
Why it matters
Chilli leaf curl is carried by tiny whiteflies, and once the virus is inside a plant there is no cure — no spray will bring that plant back. Caught young, a plant curls up, stays a stunted little bush, and sets almost no sellable chillies; a bad outbreak can cost you up to 9 in every 10 fruit (90% of your crop). It spreads fast from every infected plant and from weeds nearby, so one curled plant you leave standing becomes the source that infects all the rest. The only way to win is to stop it early — clean young plants, no whiteflies, and pull out the first sick plant the day you see it.
When to act
Zero tolerance on young plants: rogue symptomatic seedlings at once and act on whitefly the moment adults are found on the crop, especially in the nursery and first month.
This guidance is general, compiled from published agronomic references including FAO and CABI. Thresholds and timing shift with your crop, your variety and the season.
In much of the region a spray is simply called mushonga — medicine. But a chemical group you cannot name is one you cannot rotate, and a product you did not write down has no pre-harvest interval you can observe. Mushonga, and other farming words →
The full chilli leaf curl virus field guide
- Identify it
- Scout for it
- Control it
14 field-guide sections in the app
The full guide to chilli leaf curl virus — every symptom to check, how and when to walk your field looking for it, and the controls that actually work, ranked. Built into your crop plan, so you are told to look before it costs you a harvest.
Crops it affects
Frequently asked questions
How do I identify chilli leaf curl virus?
The first sign: the youngest leaves at the top of the plant curl upward and cup like a spoon, go crinkled and puckered, and turn yellow — often yellowest between the veins. The new leaves also come out smaller than normal.
When should I take action against chilli leaf curl virus?
Zero tolerance on young plants: rogue symptomatic seedlings at once and act on whitefly the moment adults are found on the crop, especially in the nursery and first month.
How do I control chilli leaf curl virus?
Prevent it — start with the right seed. Where you can get it, plant a tolerant or resistant chilli or pepper variety. Under heavy whitefly pressure this is your strongest and longest-lasting protection, because the plant shrugs off the virus even when whiteflies bite it.
Which crops does chilli leaf curl virus affect?
Among the crops covered here: Hot pepper, Tomato.
Catch it before it costs you a harvest
Divisi builds scouting into your crop plan — it tells you when to walk your field, what to look for at that stage, and what to do when you find it. Free for farmers, works offline.
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