Use tolerant grape varieties or rootstocks. For example Chardonnay, Merlot and Syrah would be moderately resistant, Cabernet sauvigon and Petit Verdot rather sensitive.
Respect the planting densities in order to obtain a well aerated vines.
Control the vigor of the vine:
Choose a poorly vigorous rootstock;
Control fertilization, especially nitrogen, reduce it if necessary;
Enherber.
Modify the microclimate of the plant cover and the cluster
Ebourgeonner;
Remove leaves from the fruiting zone;
Manually or "physiologically" thin out the bunches.
Minimize wounds on berries as much as possible.
Control the other diseases and pests of the vine at the origin of various injuries.
Eliminate the sources of inoculum such as wood carrying cankers, dried stems, mummified berries. In other words, destroy all sources of potential inoculum.
Avoid irrigation by sprinkling.
Eliminate the first diseased organs.
Eliminate plant debris during and at the end of cultivation.
Do not work in the vineyard when the plants are wet.
Crops