Powdery mildew was found on three cultivars of seedless watermelon at the Clemson Coastal REC on May 23, 2023
Powdery Mildew
Preventitive sprays help hold Powdery Mildew at bay
For producers who are actively scouting for the disease, symptoms start as circular yellow areas on the leaves. As the infection progresses, growth of the fungus appears and can be observed on the underside of the leaves. “White powder” can be viewed on both surfaces of the leaves and stems as the tissue decays.
Florida Watermelon Producers Should Guard Against Powdery Mildew
Powdery mildew is different than most of the other major watermelon diseases in that it can become active under relatively dry conditions.
South Florida Pest and Disease Hotline
South Florida Pest and Disease Hotline scouting report for November 22, 2022 including updates on Whiteflies, Aphids, Viruses,
Gummy Stem Blight, and Oomycete Diseases.
Georgia vegetable disease update | AgNet Media
Cucurbit diseases such as downy mildew, powdery mildew, and gummy stem blight thrive in moist conditions. The current hot and dry weather conditions in Georgia have meant reduced disease pressure, which is normally prevalent this time of year.
Michigan vegetable report | August 2022
Powdery mildew was reported on pumpkins and hard squash across the state. Downy mildew spores have been detected in all spore traps in the state’s network.
Powdery mildew and downy mildew most common diseases in survey
American Vegetable grower magazine shared results of a recent nationwide survey. This article presents a slide show of the survey results. Powdery mildew is the top pest across five out of six U.S. regions, downy mildew topped powdery mildew by one percentage point in the Southeast.
Alabama disease update | Powdery mildew on squash
Powdery mildew reported on yellow squash and a few other cucurbits in Alabama. It typically prefers hot and dry conditions.
