By Ozgur Batuman and Salih Yilmaz Ilarviruses can infect both herbaceous and woody plants and are known to be transmitted by pollen and seed with varying efficiency. Thrips have been associated as vectors of ilarviruses since they create wounds during feeding that can serve as entry points for virus particles carried in or on infected pollen. Tobacco streak virus (TSV) …
Neopestalotiopsis Disease Management Update
By Natalia A. Peres and Vance Whitaker As the Florida strawberry season comes to an end, it is a good time to reflect on what has been learned over the past five years about managing the emerging disease caused by the fungus Neopestalotiopsis sp. This fungus has been present for as long as strawberries have been grown but was considered …
New Way to Treat Pathogens Shows Promise
By Matthew Cutulle Soil-borne pathogenic bacteria, fungi and other microorganisms cause approximately 90% of diseases affecting the most widely cultivated agricultural crops in the United States. These soil-borne pathogens are among the most damaging factors in crop productivity affecting yield, plant vigor and overall marketability. One of the most problematic pathogens that growers in the Southeast deal with is the …
Powdery Mildew Discovered in North Florida Melons
Another week of watermelon production in Florida’s Suwanee Valley region, another confirmation of a potentially devastating disease. Fortunately, it appears that producers were ready for powdery mildew disease, says Bob Hochmuth, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) regional specialized Extension agent in Live Oak, Florida. “It is confirmation, sort of like the downy mildew situation, where they’re …
Downy Mildew Disease Confirmed in North Florida Watermelons
By Clint Thompson Downy mildew disease has been confirmed in North Florida watermelons. South Georgia and South Alabama watermelon producers should be wary since the disease can spread easily by the high winds being experienced this week. “With the way the winds have been blowing here recently I think we’re in a situation where it’s relatively high risk throughout the …
Research Updates on Diseases in Georgia Cucurbits
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
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 …
Disease Management Recommendations for Florida Melon Growers
By Clint Thompson University of Florida Institute of Food and Agricultural Sciences recommends North Florida watermelon producers continue a weekly application of Bravo or other chlorothalonil product. This helps protects against early disease development, said Bob Hochmuth, UF/IFAS Regional Specialized Extension agent in Live Oak, Florida. “Early in the season, we suggest that they continue with a weekly application of chlorothalonil,” …
Blueberry Rust a Problem Throughout the Year for Florida Growers
By Clint Thompson One blueberry disease continues to surface to the top of concerns for Florida growers. Leaf rust is an ongoing problem that plagues production throughout the state, says Phil Harmon, professor and Extension plant pathologist at the University of Florida. “In evergreen production, rust has still been an issue. The dry weather has reduced it compared to last …
Bayer Announces Luna® Pro Fungicide
Luna® Pro fungicide, a premium premix fungicide that provides control of foliar and soilborne diseases in potatoes, is the latest release from Bayer. It utilizes prothioconazole, a DMI (DeMethylation Inhibitors) foliar fungicide, and fluopyram, an SDHI (succinate dehydrogenase inhibitor) fungicide. The combination of the two proven active ingredients offers a defense against early blight, white mold and other key potato …