[Fhb-update_ma] FHB Update from PA, 04/24/18

[FHB Updates - Mid Atlantic SWW Region]

Currently, PA and most of Delaware are at a “low” risk of scab
development because it has been so cool. The exception is the lower eastern
portion of Sussex County, DE which is just now starting to experience
weather conditions that nudge it into "medium" risk territory.
While most of the wheat in PA is too young to worry about scab right now,
those of you wishing to apply a fungicide along with your growth regulator
spray should scout for powdery mildew before doing so. We generally
recommend only spraying for this disease if 5-10% of the fully expanded
upper leaves are infected, and because it has been so cool, your wheat will
probably not meet this threshold.
Those of you in Delaware are closer to heading, and if you are growing
barley, you may already be there. Keep a close watch on the FHB Risk
Assessment Tool as warmer temperatures and humidity may push your risk
higher over the next week. If you decide to spray your barley, target your
Caramba or Prosaro application at heading. For wheat, wait until early
flowering for your applications.

--Alyssa Collins, Extension Field Crops Pathologist, Penn 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