Wheat Scab Update-April 23, 2018
For wheat flowering now, scab risk is low across North Carolina due to recent dry weather. Rain predicted for April 23-28 will make conditions more conducive to scab for wheat flowering in the coming 10 days. However, considering the amount of moisture predicted, risk for wheat flowering later this week and next week will likely remain low in most of North Carolina, with the likely exception being the Tidewater area. If your wheat is flowering in the next 2 weeks, monitor scab risk closely, especially if you have susceptible varieties.
Do not apply a strobilurin-containing fungicide after flag leaf stage. For scab, the most effective products are Caramba, Prosaro, and Proline. Aerial application may be profitable. For ground application, rear- and forward-facing nozzles should be angled down 30 degrees from horizontal.
–Christina Cowger, Plant Pathologist, USDA-ARS and North Carolina State
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