Aie encore une maladie de la vigne ... encore des choses à modéliser pour un géographe :-)
Trunk diseases - the new phylloxera ? | Articles | JancisRobinson.com
▻http://www.jancisrobinson.com/articles/trunk-diseases-the-new-phylloxera
The trunk-disease problem is particularly acute in the Cognac region of western France and last December major producer Hennessy announced it was dedicating €600,000 to related research.