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

Iron deficiency.

PHOTO 474. Iron deficiency abnormalities are visually detectable as an interveinal yellowing of young, rapidly growing leaves, while the primary, secondary and finer veins remain green in colour.

PHOTO 475. Towards the end of the season entire grapevines can be transformed into stunted and bush-like shapes by iron deficiencies.

304 • A Guide to Grapevine Abnormalities in South Africa