A Guide to Grapevine Abnormalities in South Africa - P.G. GOUSSARD

Dead-arm (139); Petri disease (140).

PHOTO 139. Internal wood rotting as per the example in Photo 138 – not to be confused with eutypa dieback.

PHOTO 140. Gradual dieback/dwarfing of certain grapevines in vineyards that normally perform otherwise. Obviously it is a priority to obtain expert advice, in view of the fact that widely divergent causes may be involved.

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