Tomato mosaic
One of the most persistent plant viruses, easily transmitted mechanically. Can survive in dry plant debris for several years. Causes yield loss up to 30%.
Symptoms
- Blurred light and dark green spots on leaves (mosaic)
- Deformed and dwarfed young leaves
- Narrowing of leaf blades (fern leaf)
- Uneven fruit coloring with brown spots
- Stunted plant growth
What it does to the crop
- Yield loss up to 30%
- Leaf deformation and dwarfing
- Uneven fruit ripening
- Weakened plant growth
What encourages it
- Mechanical transmission during care work
- Infected seeds
- Plant debris in soil (virus survives for years)
- Use of contaminated tools, boxes and pots
Prevention
- Disinfection of tools, boxes and pots
- Disinfection of hands and tools with milk diluted with water (1:5)
- Removal and destruction of infected plants
- Use of resistant varieties (Tm-2² gene)
- Avoid smoking tobacco near crops
⚠️ Before you reach for a spray
This atlas is informational and still growing — different diseases can look almost identical. Confirm the diagnosis and read the product label before applying any plant protection product. If you are unsure, ask your local extension or advisory service.
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