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First Report of Plasmopara halstedii on Perennial Black-Eyed Susan in North Florida

H. Dankers, J. W. Kimbrough, and M. T. Momol

January 2004


In August 2003, the Florida Extension Plant Diagnostic Clinic in Quincy, FL, received a perennial black-eyed-susan (orange coneflower) plant exhibiting symptoms of downy mildew. Nearly all of approximately 0.2 hectares of potted plants grown by a nursery were symptomatic. Downy mildew has not been previously reported on perennial black-eyed-susan in Florida.


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