Questions and answers

Gray plaque on the vine

Gray plaque on the vine


We are searching data for your request:

Forums and discussions:
Manuals and reference books:
Data from registers:
Wait the end of the search in all databases.
Upon completion, a link will appear to access the found materials.

3 grape bushes of 12 are covered with some gray muck, the brushes have not matured, how to deal with it?

Answers:

Good little, most likely, you are observing a defeat of powdery mildew (Oidium, Mildew). It’s difficult to determine exactly without a photo. These fungal diseases are often activated in high humidity, when in summer the temperature does not rise above 24 degrees Celsius. Torrential rains contribute to the rapid spread of fungus. If the fungus has captured a large area without spraying with fungicides, you can not do: Delan, Hom, Abiga peak. Spraying with a mixture of Bordeaux liquid with colloidal sulfur is also effective.