Hard red winter wheat is at the heading to flowering growth stages. The spring wheat crop is still two to three weeks from heading and flowering. Currently, the greatest scab risk is in southeast ND and it is likely the eastern third of the state will be in high risk (susceptible variety) in the coming days. If a fungicide application is going to be made in winter wheat, the greatest suppression is achieved using Caramba, Miravis Ace, Proline and Prosaro. The best time to make the application is at early flowering (yellow anthers protruding from center of head). A fungicide application that occurs three to seven days after the onset of flowering can still provide good suppression of both FHB and DON.
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