By Bhabesh Dutta Anthracnose in pepper is caused by a fungal group of pathogens belonging to mainly Colletotrichum gloeosporioides and C. acutatum. TWO TYPES OF ANTHRACNOSEAnthracnose in pepper is a common issue that pepper growers face, particularly after sun scalding of fruits. This type of anthracnose is called “secondary anthracnose” as the fungal pathogen needs some kind of injury to …
Beware of Spike in Vegetable Diseases Following Recent Storms
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. …
North Florida Watermelon Growers Hoping to Overcome Various Diseases
By Clint Thompson The final watermelon harvests in North Florida have growers combatting a plethora of diseases. Those attempting to stretch another picking from their fields this week will have to overcome any number of diseases. These include downy mildew, powdery mildew, Alternaria leaf spot, gummy stem blight and watermelon mosaic. Bob Hochmuth, University of Florida Institute of Food and …
A New Ilarvirus in Florida Tomatoes
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 …