[Fhb-update_ma] FHB Update from PA, 05/19/17
FHB Updates - Mid Atlantic SWW Region
fhb-update_ma at scabusa.org
Fri May 19 15:18:18 EDT 2017
Our scab risk continues to be quite low in PA. Wheat flowering now is not
very threatened by head scab. Rains early next week may drive our risk up,
so continue to check the forecasting site regularly. Recent hot temperatures
and sunny days have compressed the heading/flowering window for wheat, so
your crop may be further along than you think.
If you choose to spray your wheat, you can do so from 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 https://www.scabusa.org
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