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

Shiraz disease.

PHOTO 230. Characteristic of Shiraz disease is regrowth at the tips of unlignified, green shoots – at an advanced stage of leaf drop (mid-July 2005).

PHOTO 231. The regrowth of shoots (as in Photo 230) in this Merlot noir grapevine (visually detectable infection with Shiraz disease) in late July 1986.

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