The Cladosporium spp. , and in particular Cladosporium herbarum , do not require the implementation of special protection methods, given their low incidence in the vineyard in France. Despite this, the recommended measures are well known to wine growers since they are mostly those proposed to control gray rot due to Botrytis cinerea . We therefore advise you to apply them, namely:

 

• Improve the ventilation of the vegetation as much as possible in order to reduce its humidity (trellising well, removing leaves, thinning the bunches, controlling vigor). It should be noted that severe leaf stripping of the vine favors the development of Cladosporium spp. on grape berries, and increases the risk of rotting at harvest. This cultivation operation would be at the origin of the deterioration of the lenticels, in particular on Cabernet Sauvignon and Sauvignon Blanc.
• Avoid conditions of persistent humidity on the canopy and bunches around and during the harvest period.
• Harvest early if possible, before the berries are overripe.
• Control the development of other pests in the cluster (phytophagous insects that produce honeydew - scale insects, pruinose leafhoppers; bunch worms; powdery mildew, etc. ); they can cause damage to berries and thus promote parasitism by rotting agents.

Last change : 04/19/21