Vergilbung

General term for the yellowish discoloration of the Leaf of Vine . This can have various causes such as lack of Nutrients (for example, Manganese ) Or as a consequence of diseases such as chlorosis (called, significantly, also jaundice), or leafroll . In particular, such a group is understood by so-called yellowing disease. This worldwide occurring...
Found on http://www.wein-plus.eu/en/Yellowing_3.0.6384.html
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