[Fhb-update_ma] FHB Update from PA, 05/29/14
FHB Updates - Mid Atlantic SWW Region
fhb-update_ma at scabusa.org
Thu May 29 05:10:25 PDT 2014
The wheat in the southern tier of PA has mostly headed and is beginning to
flower. Currently risk levels are low in most of the state, with some areas
at medium risk in the southeast. With spotty rains and moist weather
forecast for the next week, use your judgment as conditions at a weather
station may not be the same as at your farm. Closely follow the risk levels
at this time to determine if a fungicide application is needed. Remember,
sprays applied PRIOR to flowering will NOT provide significant suppression
of scab or toxin production. However, good control can be obtained with an
application up to 5 days following the majority of the field flowering.
Watch your days-to-harvest restriction.
Caramba, Proline 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. Do not use
products that contain a strobilurin. 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.
--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
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