One field in North Florida has confirmed the presence of Downy Mildew in watermelon fields, South Georgia and South Alabama should be on the lookout as this disease spreads rapidly by wind. “The way that this disease typically moves, it moves from south to north.” said Bob Hochmuth, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Regional Specialized Extension agent in Live Oak, FL.
https://specialtycropindustry.com/downy-mildew-disease-confirmed-in-north-florida-watermelons/