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

Paraquat phytotoxicity.

PHOTO 484. Direct contact with spray-drift of paraquat is associated with a localised incidence of irregular, chlorotic spots – to be followed by rapid necrosis.

PHOTO 485. Severe phytotoxicity interventions in instances where leaves, young shoot parts and flower clusters are subjected to direct contact with spray-drift of paraquat.

312 • A Guide to Grapevine Abnormalities in South Africa