A Guide to Grapevine Abnormalities in South Africa - P.G. GOUSSARD
Boron toxicity.
PHOTO 480. A further example of boron toxicity. Especially note the absence of teeth on the leaf curling downwards, the edge being smooth and the surface bullate – as illustrated in the 11:00 position.
A Guide to Grapevine Abnormalities in South Africa • 307
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