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Okra yellow vein mosaic virus
Bhendi yellow vein mosaic virus · Viral
Photo: Srigayu1996 · CC BY-SA 4.0
Okra yellow vein mosaic is a virus disease of okra spread from plant to plant by the tiny white flying insect called the whitefly (its "vector" — the insect that carries the disease). Instead of green leaves fed by hidden green veins, the fine network of veins turns bright yellow until the whole leaf glows yellow, the plant stays small, and the pods come out pale, hard, twisted and unsellable. The virus lives on in okra, in wild mallow-family weeds and in leftover okra plants between crops. Once a plant is infected there is no cure — you can only protect the healthy plants.
Why it matters
This is the most damaging disease of okra: caught early, it can wipe out as much as 80% of your harvest, and infected plants make pods that are small, pale and twisted — nobody will buy them. The reason it is so feared is that there is no cure once a plant catches it: no spray can clean the virus out of a sick plant. All you can do is stop the whitefly that spreads it and pull out the sick plants before they infect the rest — so the whole fight is about prevention and speed, not treatment.
When to act
First vein-yellowing on young leaves or rising whitefly numbers; act early on the vector and rogue infected plants, as infection is systemic and incurable.
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 okra yellow vein mosaic virus field guide
- Identify it
- Scout for it
- Control it
17 field-guide sections in the app
The full guide to okra yellow vein mosaic 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 okra yellow vein mosaic virus?
The first thing you see: the fine little veins on the youngest leaves at the top of the plant turn yellow, making a net or spider-web of yellow lines on a still-green leaf. This is the clearest early sign — look at the new growth, not the old bottom leaves.
When should I take action against okra yellow vein mosaic virus?
First vein-yellowing on young leaves or rising whitefly numbers; act early on the vector and rogue infected plants, as infection is systemic and incurable.
How do I control okra yellow vein mosaic virus?
PREVENT — plant a resistant variety (your strongest tool): where you can get it, sow a resistant or tolerant okra variety. This is the most effective and cheapest protection there is — the plant fights the virus for you. Ask your agro-dealer or extension officer which okra lines resist yellow vein mosaic in your area.
Which crops does okra yellow vein mosaic virus affect?
Among the crops covered here: Okra.
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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