Ash, G. 2000. Downy mildew of grape. 2000. The Plant Health Instructor. DOI: 10.1094/PHI-I-2000-1112-01
Updated, 2005.

DISEASE:  Downy mildew

PATHOGEN:  Plasmopara viticola

HOSTS:  All cultivars of grapes in the species Vitis vinifera and many Vitis intraspecific hybrid cultivars. Susceptibility within the North American species Vitis labrusca, varies from highly susceptible to resistant.

Authors
Gavin Ash
Charles Sturt University,
Wagga Wagga, New South Wales, Australia

Downy mildew is a highly destructive disease of grapevines in all grape-growing areas of the world where there is spring and summer rainfall at temperatures above 10ºC (50ºF). In 1885, P.M.A. Millardet first used Bordeaux mixture (copper sulfate and lime) to control downy mildew in the vineyards of France, beginning the chemical era of disease control

A typical method of growing grapevines on a trellis system.
(Courtesy G. Ash)