FHB Update from KY, 05/02/19

Wheat fields in most of the state should now be flowering. Although current risk of Fusarium head blight is predicted to be low, rainfall events that occur over the next few days may change the risk level. Fungicides that are effective in managing Fusarium head blight and the associated mycotoxin, deoxynivalenol (DON; vomitoxin) include Caramba (BASF Corp.), Prosaro (Bayer CropScience), and Miravis Ace (Syngenta Crop Protection). In general, in university research trials, the most effective application timing for management of Fusarium head blight and DON has been Feekes 10.5.1 (beginning flowering), but applications 4-6 days after Feekes 10.5.1 also have been found to be similarly effective. Be sure to read and follow fungicide labels, including pre-harvest interval restrictions before making any fungicide applications.

--Carl Bradley, Extension Plant Pathologist, University of Kentucky

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