Downy mildew
Scientific term: Plasmopara viticola, Peronospora
Genus/ Division: Mock mushroom, egg mushroom (Oomycota)
Features
Features
Slightly purple or white-gray mealy coatings form on the underside of the leaf. Either oil spots or red colored areas (see picture) are visible on the upper side of the leaf.
Consequences
Consequences
The consequence of the infestation is withering and dying of the leaves and eventually the whole vine. The grapes are then also no longer suitable for consumption.
Spread
Spread
The wind carries the spores and spreads the disease.
Treatment advices
Treatment advices
Coming soon
Sources
Sources
Viret, Olivier, Werner, Siegfried, Pierre-Henri, Dubuis, and Katia, Gindro. "Echter Mehltau".Eidg. Departement für Wirtschaft, Bildung und Forschung WBF, Agroscope, AMTRA, Version von (2014).