The necrosis Cortical screw, commonly called Escoriosi, is adversity potential of each grape variety, especially in the hills: some are more susceptible than others, such as Cabernet, Groppello, Chardonnay.

Escoriosi miceto causes a fungus, Phomopsis the wine, belonging to the genus Phomopsis that in general can cause galls on ornamental plants like gardenia, or even as oak, ash tall.

During the winter, this fungus is present as pycnidia and mycelium, the branches of the vines, or on the ground.
In early spring, with the help of the rains, the pycnidia release spores and fungus spreads and multiplies through stomata or cracks to the branches causing infections evident after about 3 or 4 weeks.
Form points blacks generators escoriosi on the leaves and at the base of young shoots, which expands causing cracks and fissures. (1)
Bunches on the fungus is inoculated nell'acino to sprout in spring, and remains latent until maturity. (2)

To limit the presence of escoriosi, you first need to intervene at the time of pruning: to separate the sick from the healthy ones screws, remove the parts from the vineyard pruned by burning.
For the control of this disease escoriotica, they were effective remedies of chemical protective prior to infection, sulfates, as well as treatments in water at 50 ° C for thirty minutes. (3)
Field trials have also stressed the effectiveness dell'azixtrobina, remedies anti powdery mildew and downy mildew anti; generally decrease nitrogen-based fertilizers.


(1) Phomopsis Cane and Leaf Spot Phomopsis viticola, Joy Hilton, 2011
(2) Phomopsis Cane and Leaf Spot of Grape, Anco, Erincik, A. Ellis, 2011
(3) Phomopsis viticola: pathogenicity and management, Rawnsley, Wicks, 2002