Methods of protection 

  • Use grape varieties tolerant or resistant or rootstocks.
  • 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.
  • Control other diseases and pests of the vine (especially fruit moths, powdery mildew ...).
  • Eliminate the sources of inoculum such as wood carrying sclerotia, dried stems .
  • 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.
  • Apply chemical protection against Botrytis at one or two of the 4 key periods of the vine's development cycle:
  • - End of flowering / drop of floral caps (stage A);
  • - Closure of the cluster (stage B);
  • - Beginning of veraison (stage C);
  • - Three weeks before harvest (stage D)


We advise you to consult the Periods of symptom expression on leaves and on bunch. As well as the list of active ingredients currently approved in France for the treatment of  plants and aerial parts of the vine.


Fungicide applications at stages A and C are part of a reasoned protection strategy.

Warning: many strains of B. cinerea resistant to fungicides belonging to various chemical families are present in the vineyard or are likely to be selected quickly. We therefore advise you to alternate fungicides with different modes of action.

hen applying anti- fungicides Botrytis, take care to protect the bunches.

Use a risk forecasting model and / or follow plant health bulletins.

Use unconventional methods (biopesticides, SDN ).

* Chemical control : As the number of pesticides available for a given use is constantly changing, we advise you to always confirm your choice by consulting the e-phy site of the Ministry of Agriculture and Fisheries which is an online catalog of plant protection products and their uses, fertilizers and growing media approved in France. This also applies to all biological products based on microorganisms or natural substances.


Last change : 07/08/21