Due to significant rainfall and warmer temperatures, the forecast map is indicating significant risk of head scab in southern MI where flowering will likely begin next week (week on May 27). The risk may dissipate to an extent by the time flowers appear. However, the threat will likely remain to some extent as current conditions are encouraging spore development and there is more wet weather in the forecast. In central Michigan, as of May 23, flag leaves are emerging. The risk of head scab and foliar diseases are below normal. Of course, this could change in a week’s time.
Martin Nagelkirk & Martin Chilvers
--Martin Nagelkirk, Extension Educator, Michigan 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