A late freeze in Florida combined with hot and dry conditions in May may have contributed to no presence of Cucurbit Downy Mildew in Alabama so far during this growing season.
First reports of Cucurbit Downy Mildew in the U.S. in 2022 were reported in Florida in the end of April.
Early symptoms of Fusarium wilt appear as dull gray-green leaves which wilt during the hottest time of the day. While plants recover at night, the symptoms eventually become permanent over time. Infected plants will collapse and die.
Symptoms of the disease on watermelon plants appear as yellow blotches on the oldest leaves first.
Outbreaks of Anthracnose in watermelon and cucumber have occurred in Florida, Georgia, South Carolina, Virginia, Delaware and New York recently. University of Georgia Plant Pathologists discuss management of Anthracnose in Cucuribts.
Whitefly pressure has been increasing to high levels in Southern Florida which is normal at this time of year. Whiteflies are vectors for viruses. Management of whiteflies later in the season depends on early suppression of whitefly populations.
To receive a customized text or email alert for your area when new outbreaks of Cucurbit Downy Mildew are confirmed, fill out the form on the CDM ipmPipe Cucurbit Downy Mildew forcasting website.
Florida cucurbit growers are reporting whiteflies, gummy stem blight, powdery mildew, and cucurbit downy mildew.