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

Esca-associated soft wood rotting.

PHOTO 129. Internally rotten parts (Photos 127 & 128) display yellowish to whitish yellow discolourations of soft parts in the wood.

PHOTO 130. Characteristic internal pale yellow rotting (esca complex) which is usually surrounded by a dark brown to black rim.

88 • A Guide to Grapevine Abnormalities in South Africa