Yam mosaic virus
A virus that gives yam leaves a light and dark green pattern and makes them small.

What it looks like

Every field looks a little different. If you are not sure, ask in the app’s Farmers, or ask an agronomist.
When it comes
| Crop | Stage | Check |
|---|---|---|
| Yam | Vegetative growth | Scout every 2 weeks |
What to look for
Every 2 weeks, look at the leaves and vines. Yellow patchy patterns on leaves = a virus (no cure — only prevention is using clean seed yam). White or brown crusty patches on stems = scale insects. Bronze-coloured leaves in dry weather = tiny mites.
Also watch for
General advice from crop guides for Ghana. Before you spray, ask your agro-input dealer for a product registered for this pest, read the label, and wear gloves. For a serious attack, call your district agriculture office or an agronomist.
Catch it early
AsaaseYaa reminds you when to check your crop for pests, and shows you what to look for. Free.