From Meg McGrath, Long Island Horticultural Research & Extension Center, mtm3@cornell.edu: Downy mildew was confirmed affecting watermelon in the sentinel plot at LIHREC on 9/1. This is the third time this disease has been observed on this cucurbit type at LIHREC since monitoring occurrence of the different pathogen types started at LIHREC in 2008. Previous occurrences were in … Continue reading Downy Mildew Found in Watermelon on Long Island