downy mildew fungus host:ohioline.osu.edu

Listing 1 - 4 from 4 for downy mildew fungus

Downy Mildew of Grape, HYG-3013-95
... Ohio 43210-1087 Downy Mildew of Grape HYG-3013-95 Michael A. Ellis Downy mildew is a major disease of grapes throughout the eastern United States. The fungus causes ... downy mildew growth appears. Young shoots usually are stunted and become thickened and distorted. Severely infected shoots and tendrils usually die. Causal Organism Downy mildew is caused by the fungus Plasmopara viticola. The fungus ...
ohioline.osu.edu

Powdery Mildew of Grape, HYG-3018-94
... black rot or downy mildew. However, uncontrolled, the disease can be devastating on susceptible varieties under the proper environmental conditions. Unlike black rot and downy mildew, the powdery mildew fungus does not require free water on the plant tissue surface to infect. Powdery mildew can result in reduced vine ...
ohioline.osu.edu

Leaf Diseases on Ornamental Trees and Shrubs, HYG-3044-96
... chlorothalonil, mancozeb or thiophanate-methyl. Downy mildew of cranberrybush viburnum. Pathogen: Plasmopara viburni This is one of the relatively few significant downy mildew diseases of ornamentals. Spores produced ... containing mancozeb. This disease is diagnostically different from powdery mildew of viburnum in that the fungus is present on lower rather than upper leaf surfaces. Guignardia ...
ohioline.osu.edu

Downy Mildew of Crucifers, HYG-3124-96
... 2021 Coffey Road, Columbus, OH 43210-1087 Downy Mildew of Crucifers HYG-3124-96 Sally A. Miller Randall C. Rowe Richard M. Riedel Downy mildew affects all cultivated plants and weeds in ... radish these symptoms may be confused with those caused by Rhizoctonia. Causal Organism The fungus causing downy mildew in crucifers, Peronospora parasitica, overwinters in roots or in decaying portions of diseased ...
ohioline.osu.edu