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

Mealybug.

PHOTO 309. The incidence of mealybug and young larvae exposed by bark removal early in spring. A similar situation may also occur on grapevine roots. Note the protective action exercised by ants at this stage already in order to protect mealybug against natural enemies.

PHOTO 310. A situation which portrays the activities of ladybirds. Note the slightly shiny appearance of the shoot basis – as associated with the excretion of honeydew.

200 • A Guide to Grapevine Abnormalities in South Africa