Anthracnose Risk Establishment Based on Age-Related Susceptibility of Grape Leaves, Flowers, and Berries to Infection by .

Anthracnose is an important disease of grapevines caused by the fungus . In recent years, there have been regular outbreaks in humid grape-growing regions around the world. Young leaves and berries are reported to be highly susceptible to , but detailed and seasonal development of age-related susceptibility remains unclear.

Influence of Leaf Wetness Duration and Temperature on Infection of Grape Leaves by under Controlled and Vineyard Conditions.

On susceptible varieties, indirect damage to vines infected by range from reduced vigor to complete defoliation while, on berries, damage ranges from reduced quality to complete yield loss. Limited knowledge about the relationship between weather conditions and infection makes anthracnose management difficult and favors routine application of fungicides. The influence of leaf wetness duration and temperature on infection of grape leaves by was studied under both controlled and vineyard conditions.