the description of the symptoms of the disease is on :
- branch tendrils
- leaves
- grapes
there are information about the nuisibility and the biology of the fungus and presents chemical and non-chemical control methods
About non chemical;
What methods of prophylaxis against Botrytis?
We must reduce the vigour
• lowering the nitrogen
• in cover-cropping between the rows
You must have a good control against damage related to powdery mildew, grape berry moths to 2nd and 3rd generation that create gateways for botrytis.
Finally, we must facilitate the grape aeration:
• disbudding
• eliminating leaves at the fruiting zone
• thinning to avoid a lot of grapes at the same place...
You can find all these technical sheets on:
