By Philip Harmon and Doug Phillips Anthracnose fruit rot (AFR), also known as ripe rot, is a significant disease on southern highbush blueberries. Caused by the fungal pathogen Colletotrichum gloeosporioides on southern highbush blueberries in Florida, AFR creates sunken lesions on the surface of blueberries. This is followed by eruptions of orange- or salmon-colored spores from the lesions when the …
Fusarium Wilt Observed in North Florida Watermelons
By Clint Thompson Fusarium wilt disease continues to be observed in North Florida watermelons. Bob Hochmuth, University of Florida Institute of Food and Agricultural Sciences (UF/IFAS) Regional Specialized Extension agent in Live Oak, Florida, cautions growers against spending large amounts of money on potential remedies. They won’t be effective this late in the growing season. “I saw some of these …
San Jose Scale Management Begins Now
By Clint Thompson The first peak of San Jose scale activity is occurring now in Georgia peach orchards. Growers should be proactive in beginning their insecticide applications, says Brett Blaauw, assistant professor at the University of Georgia (UGA) College of Agricultural and Environmental Sciences “We’re just at the beginning of the first real activity period,” Blaauw said. “Most of the …
How to Manage Botrytis in Strawberries
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 …