Photo credit: Jason Brock, University of Georgia, Bugwood.org
Target spot has been observed throughout South Georgia and is known to cause the most issues in fields with rank growth. Growers with a crop between the first week of bloom and the sixth week of bloom may consider protecting their crop with a fungicide. However, not every grower will benefit from this application and should scout fields prior to making this management decision. This disease is characterized by leaf spots with concentric rings (shown above). Defoliation begins at the lower leaves and progresses up the stalk. Conditions are favorable for the disease and early detection is critical. Once defoliation has reached more that 25% a fungicide application may no longer be feasible.