By Bhabesh Dutta Fusarium wilt has emerged as a chronic problem in watermelon-growing regions in the United States, including Georgia. The disease has been responsible for significant pre- and post-harvest losses in yield and quality. Fusarium wilt is caused by the fungal pathogen Fusarium oxysporum f. sp. niveum (FON). DISEASE SYMPTOMSIn the field, symptoms typically start within two to three …
Hot and Dry: Weather Conditions Not Conducive for Pecan Scab Development
By Clint Thompson What a difference a year has made so far for Georgia pecan producers. Unlike last season when persistent rainfall forced growers to be active in their fungicide applications, this year’s dry conditions have allowed farmers to be more conservative in their scab sprays. “It could not be any better. Everybody should have their irrigation running,” University of …
Nematode Control in Potatoes
By Clint Thompson Potato producers need to be diligent in applying nematicides. Nematode control is essential every year, especially for farmers in Northeast Florida, says Zane Grabau, assistant professor of nematology at the University of Florida Institute of Food and Agricultural Sciences (UF/IFAS). “The main thing is you can’t take a year off from applying a nematicide. If you do, …
What’s Happening? Clemson Extension Agents Provide Updates
Clemson Extension agents provide updates in The South Carolina Grower this week about the status of various crops being produced throughout the state. Weekly Field Update Coastal Region Zack Snipes reports, “It seems like everything happened all of a sudden this week. We are flushed with strawberries right now. I am seeing some anthracnose on berries as well as lots of …
What To Do About Anthracnose Fruit Rot in Blueberries
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 …