Tomato Yellow Leaf Curl VirusIdentification & Treatment Guide 2026
Tomato yellow leaf curl virus (TYLCV) · Family: Geminiviridae
Tomato yellow leaf curl virus (TYLCV) is a begomovirus spread by whiteflies (Bemisia tabaci). Infected plants show upward leaf curling, yellowing leaf margins, stunted growth, and flower drop. There is no cure — management relies on resistant varieties, whitefly control with neem or imidacloprid, reflective mulches, and insect-proof netting.
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criticalTomato Yellow Leaf Curl Virus
- Affects
- leavesstemsflowers
- Peak Season
- Year-round in tropics; peaks during hot, dry seasons when whitefly populations are highest
- Spread Risk
- Fast
- Spread By
- Whitefly (Bemisia tabaci) — persistent, circulative transmission
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Symptoms: What does Tomato Yellow Leaf Curl Virus look like?
Visual identification guide — tap each stage for details
Mild upward curling of young leaves
Newly emerging leaves show slight upward cupping and curling at margins. Plants may appear slightly pale compared to healthy neighbors.
Severe curling, yellowing, and stunting
Leaves curl severely upward and inward, becoming cupped and rigid. Leaf margins turn yellow. Internodes shorten dramatically, giving a bushy, stunted appearance.
Flower drop and no fruit set
Infected plants produce few or no flowers. Existing flowers abort. If any fruit sets, it is small and unmarketable. Growth nearly stops.
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