Most of the wheat crop in Virginia is currently between flag leaf emergence and heading with some wheat close to the flowering stage. As wheat reaches the flowering stage, it is susceptible to infection with FHB, and this is the critical stage for making fungicide applications. Currently, the risk for FHB infection is low throughout Virginia. In addition, the 3-day forecast indicates risk will remain low. Recommended fungicides for control of FHB and DON contamination include Caramba, Prosaro, and Miravis Ace, and the optimum application timing is early flowering. Do not apply a strobilurin-containing fungicide after the flag leaf stage since this has the potential to increase DON concentrations in the grain.
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