Grapevine Fanleaf Disease
Grapevine fanleaf virus
Grapeviral
A dagger-nematode-transmitted virus causing fan-shaped leaf malformation and reduced yield.
Symptoms
Fan-shaped, malformed leaves, shortened internodes, and reduced yield and fruit set.
Favorable conditions
- •Dagger nematode vectors in the soil
- •Replanting on virus-infested former vineyard ground
Management
- 1Control dagger nematode vectors before replanting
- 2Use certified virus-free planting material
- 3Fumigate soil on known replant sites
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