[Fhb-update_ma] FHB Update from PA, 05/14/18
FHB Updates - Mid Atlantic SWW Region
fhb-update_ma at scabusa.org
Mon May 14 17:42:29 EDT 2018
If you have wheat flowering this week or barley heading this week in
DelMarVa or most of Pennsylvania, please consider spraying your crop for
scab if you have not done so already. Persistent wet weather and warm
temperatures are triggering Medium to High risk levels in many areas of the
region.
Time your application 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 https://www.scabusa.org
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