[Fhb-update_ma] FHB Update from PA, 05/19/16

FHB Updates - Mid Atlantic SWW Region fhb-update_ma at scabusa.org
Thu May 19 10:07:34 EDT 2016


Wheat has begun to flower across Southern PA. While the overall scab risk
has gone down with improving weather conditions, continue to monitor your
predicted risk levels as your wheat comes into flower. There have now been
reports of stripe rust in Southern PA. A scab treatment at early flowering
will help protect your flag leaf from foliar diseases like rust, powdery
mildew and blotch as well as head scab.
Be prepared to spray a fungicide on fields that are at the beginning of
flowering, up to about 5 days following the beginning of flowering.
Remember, sprays applied PRIOR to flowering will NOT provide significant
suppression of scab or toxin production. Caramba or Prosaro are effective on
scab and give control of most leaf diseases and glume blotch. They do not
need to be tank mixed with another product to control these diseases. If
these products are unavailable, Proline and Folicur (which together provide
the same chemicals as Prosaro) may be tank mixed at a rate of 3 + 3 fl oz/A.
Spray nozzles should be angled at 30° down from horizontal, toward the
grain heads, using forward- and backward mounted nozzles or nozzles with a
two directional spray, such as Twinjet nozzles. Do NOT use any
strobilurin-containing fungicides at heading or beyond.


--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 http://www.scabusa.org



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