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

Esca dieback.

PHOTO 123. The last signs of life in this particular Roobernet grapevine (Photos 120, 121 & 122) are accentuated by the shoots drying out and dying back.

PHOTO 124. Characteristic discolouration patterns of Cabernet Sauvignon leaves related to esca – in due course this results in the occurrence of intervenal, finger-like brown and dead tissue.

A Guide to Grapevine Abnormalities in South Africa • 85