By Madalyn Shires and Cody Molnar et.al
Recent Southern Rust Reports
In late July, reports began about possible Southern Rust on corn fields in several South Dakota counties. Upon scouting, we were able to confirm that the disease was found in Clay, Yankton, and Bon Homme counties (Figures 1 and 2). We received pictures of southern rust, which was confirmed in Union County. We also observed extremely early disease development in Brookings, Moody, and Deuel counties (one or two lesions on a few plants in the scouted field).
Source : sdstate.edu