Phomopsis Cane and Leaf Spot of Grape
Diaporthe viticola
Grapefungal
A fungal disease causing pale-centered leaf spots and bleached, cracked canes.
Symptoms
Small black spots with pale centers on leaves and canes, with bleaching and cracking at the base of affected canes.
Favorable conditions
- •Cool, wet weather early in the season
- •Overwintering inoculum on canes
Management
- 1Apply fungicide sprays early in the season
- 2Prune out infected canes
- 3Improve canopy airflow
Back to the disease library