Disease Descriptions and Management
Black rot is one of the most serious diseases of grapes in the eastern United States.
Crown gall occurs on more than 600 species of plants. The disease is characterized by galls or overgrowths that form on the roots, trunk, and arms of grape vines.
Downy mildew is caused by a fungus that can infect berries, leaves and young shoots.
Eutypa dieback is a fungal disease appearing as cankers on trunks and arms of infected grapevines. It is one of the most destructive diseases on the woody tissue of grapes.
Phomopsis cane, leaf spot, and fruit rot is one of two distinct diseases that used to be referred to as "dead arm" and is widely distributed in vineyards. The disease can weaken vines, reduce yields, and lower fruit quality.