Marbling of the vine: locut. Grapevine mottle is a grapevine virus disease called grapevine fleck virus (or GFkV) which manifests as leaf mottling (see also esca * and its slow form)
* Esca is a wood disease caused by several fungi successively intervening in the degradation of wood. In its slow form, the leaves show yellowish spots that turn red and then leaf wilting appears. There are black spots ...
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