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

Sunburn.

PHOTO 403. Severe sunburn damage in this bunch – as related to wilting, shrivelling and eventual desiccation of berries due to direct exposure.

PHOTO 404. Light brown to orange-yellow discolouration in individual berries – which may be associated with varying degrees of shrivelling – is considered characteristic of direct exposure to the sun on exceptionally hot days.

258 • A Guide to Grapevine Abnormalities in South Africa