Fungicides for powdery mildew and rust in roses

Nelson, J; Paulus, A

Fungicides for powdery mildew and rust in roses

Authors

Jerry Nelson
Albert O. Paulus

Authors Affiliations

Jerry Nelson is Extension Staff Research Associate, University of California, Riverside; Albert O. Paulus is Cooperative Extension Plant Pathologist, University of California, Riverside.

Publication Information

Hilgardia 37(3):20-21. DOI:10.3733/ca.v037n03p20. March 1983.

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Abstract

Powdery mildew is undoubtedly the most widespread disease of roses. The casual fungus, Sphaerotheca pannosa var. rosae, appears as a white or gray powdery or mealy coating on the leaves, tender stems, and flowerbuds. It distorts and discolors those areas, causes defoliation, and reduces plant vigor.

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