Most of the spring wheat is past flowering but for late planted or late maturing spring wheat varieties, flowering may still be going on. These fields are at risk for Fusarium head blight (FHB or scab). The FHB prediction tool is showing moderate to high risk for FHB mainly for the eastern-most counties and a few southeast areas. Spring wheat in these areas that is at flowering should be protected from FHB using a triazole (FRAC group 3) fungicide. For fields that were not treated due to wet conditions, a fungicide can still be applied within 6 days post flowering, however, the most efficacious timing for FHB management is when 50% of the wheat plants are at flowering.
–Emmanuel Byamukama, Extension Plant Pathologist , South Dakota State University
For more details, go to the FHB Risk assessment tool at http://www.wheatscab.psu.edu
For the latest news and updates from the U.S. Wheat & Barley Scab Initiative, go to https://www.scabusa.org