Fungicide Sensitivity of Cucurbit Powdery Mildew in Charleston, SC

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Clemson Plant Pathologist Tony Keinath believes Gatten, Vivando, Quintec and Procure fungicides provide the best management options for cucurbit producers managing powdery mildew. According to the The South Carolina Grower, a fungicide sensitivity bioassay was conducted between June 1 and June 10 to determine which fungicides can be used against the current outbreak of powdery mildew on squash, watermelon and …

Beware of Spike in Vegetable Diseases Following Recent Storms

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By Clint Thompson Cucurbit disease management is vital for vegetable growers following last week’s heavy rainfall and ahead of more rain predicted for this week. Tim Coolong, associate professor in the University of Georgia (UGA) College of Agricultural and Environmental Sciences, discussed the impact of heavy rains saturating soils across the region, especially as watermelon harvests are finally under way. …

Research Updates on Diseases in Georgia Cucurbits

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By Bhabesh Dutta Cucurbit production in Georgia is affected annually by a variety of pests and diseases. Two diseases in particular, fusarium wilt and cucurbit anthracnose, have been a cause of concern for the last five years. This article gives a brief update on the progress the University of Georgia (UGA) vegetable team1 of scientists has made studying these diseases …

Powdery Mildew Found in Various Levels Throughout South Florida

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Powdery mildew disease is being observed in cucurbits in South Florida, according to the South Florida Pest and Disease Hotline. Infestation is moderate in some squash plantings in southwest Florida. Pressure is high on mature squash along the east coast. Scouts also report increased infestations in squash fields in Homestead, Florida. All cucurbits are vulnerable to powdery mildew, though the disease …

Choanephora Blight Found on Green Bean in Charleston

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Due to frequent rains, cloudy weather and high humidity, Choanephora blight or wet rot was found throughout a one-acre planting of green bean cultivars and breeding lines at Coastal Research and Education Center last week, according to The South Carolina Grower. Growers and home gardeners may see similar symptoms on late-planted beans throughout South Carolina. Choanephora blight is a common …

Alabama Diseases Update: What to Watch for

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By Clint Thompson Alabama Extension reminds specialty crop producers that Alabama diseases are prevalent and widespread across the state. Ed Sikora, professor and Extension plant pathologist in the department of entomology and plant pathology at Auburn University, highlighted three Alabama diseases that growers should be wary of, especially during the current hot and dry conditions. “One is powdery mildew. I’m …

Downy Mildew Disease in South Carolina

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Cucurbit downy mildew disease was identified this week in South Carolina, according to the The South Carolina Grower. The disease was observed in a cucumber field in Bamberg County. Clemson Extension reminds producers to make fungicide applications every seven days. Any stretch longer than this increases the potential that the disease will spread. Recommended fungicides for cucumbers include Omega (Fluazinam, …

How to Prevent Fruit-Boring Squash Insects

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By Ayanava Majumdar, Olivia Fuller, David Lawrence and Jacob Kelley Squash and related cucurbits are favorite summer vegetables in farms across the Southeast. Though cucurbits grow fast under the right conditions, numerous insect pests feeding at various crop stages can make cucurbits a messy ordeal! In Alabama, cucumber beetles, squash vine borers and squash bugs arrive routinely during the young …

South Florida Pest and Disease Hotline: Gummy Stem Blight Concerns

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Gummy stem blight disease has increased in recent weeks in cucurbit fields across southwest Florida, according to the South Florida Pest and Disease Hotline. It has become the predominate disease in some watermelon fields in the area. The disease remains moderate in cucumber crops on the east coast. Gummy stem blight’s symptoms appear as light to dark brown circular spots …

Cucurbit Farmers: Two Diseases Already Observed in North Florida

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By Clint Thompson Cucurbit farmers in North Florida, South Georgia and South Alabama need to be wary of certain diseases that are already present in some fields. Mathews Paret, associate professor of plant pathology at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS), describes what growers should be concerned about with regards to angular leaf spot and …