By Clint Thompson Botrytis gray mold is an annual disease of strawberry producers. It may continue to worsen the more resistant it becomes to certain fungicides. Ed Sikora, professor and Extension plant pathologist in the Department of Entomology and Plant Pathology at Auburn University, said he and other colleagues have examined strawberry fields for more than a year. In about …
Powdery Mildew Detected in North Florida Watermelon
By Clint Thompson Lab testing has confirmed powdery mildew disease in watermelon in the Suwanee Valley region of Florida. Growers should be proactive in beginning their fungicide spray programs, says Bob Hochmuth, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Regional Specialized Extension agent in Live Oak, Florida. “We got the first confirmation, and it was very good …
North Florida Watching for Powdery Mildew
By Clint Thompson North Florida watermelon farmers and industry leaders have yet to see a widespread attack of any one disease, such as powdery mildew. But they are paying close attention to the plants that are in the ground. Bob Hochmuth, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) regional specialized Extension agent in Live Oak, Florida, is …
Nematode Control Important for Turf Producers
By Clint Thompson The booming housing market in Florida means a spike in sod sales for the turfgrass industry. But it also means increased risk for nematode damage. Billy Crow, University of Florida professor of nematology in the entomology and nematology department, discusses the importance of nematode control. “You’ll have slower growth in which increases the amount of time the …
Vidalia Onions Could Be Impacted by Rain at Harvest
By Clint Thompson Farmers of Georgia’s Vidalia onions are crossing their fingers and hoping for minimal impact from the rains the Southeast Georgia region has experienced in recent weeks. Onions are vulnerable to secondary pathogens during weather events, especially as the crop is being harvested. Bhabesh Dutta, University of Georgia Cooperative Extension plant pathologist, believes the impact could be felt …
Phytoplasma Disease Confirmed in Florida
Scientists at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) have recorded the first North American case of a harmful phytoplasma disease known for its threat to fruit, vegetable and ornamental crops in South America and the Middle East. The phytoplasma species called Candidatus Phytoplasma brasiliense is documented in regions of Brazil and Peru to harm hibiscus, …
New Viruses to Watch for in Watermelon and Other Cucurbits
By Pamela D. Roberts Whitefly-transmitted viruses are the major disease problem for watermelons grown in South Florida. For the past few decades, whitefly-transmitted viruses have included squash vein yellowing virus (SqVYV), cucurbit leaf crumple virus (CuLCrV) and cucurbit yellow stunting disorder virus (CYSDV). A HISTORY OF VIRUSESAlthough SqVYV was first identified from squash in Florida in 2005, it had most likely been …
South Florida Pest and Disease Hotline: Gummy Stem Blight Concerns
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 …
Pecan Growers Should Delay Fungicide Applications, Unless Crop is Highly Vulnerable to Scab Disease
By Clint Thompson Increased rainfall last week had pecan producers feeling antsy about applying fungicide sprays for scab disease. But that should only apply to a small percentage. Most growers still can wait to start their fungicide applications, says University of Georgia Cooperative Extension Pecan Specialist Lenny Wells. “I’ve had calls from some (growers), and some of them I agree, …
Cucurbit Farmers: Two Diseases Already Observed in North Florida
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 …