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

Black and blue-green moulds (97); black moulds (98).

PHOTO 97. Black and blue-green moulds display an intense onslaught.

PHOTO 98. Black moulds on hanging bunches often cause adjacent parts of shoots to turn black.

68 • A Guide to Grapevine Abnormalities in South Africa