Southern corn rust has been confirmed in Jackson County, Florida, near the southwestern Georgia border. The infected plant sample was brought into the Seminole County Extension Office, where it was examined by current Seminole County Extension Agent Justin Odum and former UGA Extension Agent Rome Ethredge. Images taken under the microscope were sent to Dr. Bob Kemerait, UGA Extension Row Crop Pathologist, who confirmed the presence of Puccinia polysora, the fungal pathogen responsible for southern corn rust.
This is an important early detection, as southern corn rust can develop rapidly under favorable weather conditions, posing a serious threat to corn yields.
Georgia growers should remain vigilant and continue scouting corn fields regularly for signs of rust. UGA Extension sentinel plots are being closely monitored, and coordinated scouting efforts are ongoing across the state by Extension agents and private crop consultants.
If you suspect southern corn rust in your fields, contact your local Extension office for assistance with identification and management recommendations. Early detection and timely fungicide applications are key to minimizing yield losses.
Stay tuned for updates and guidance as conditions evolve.
