[Fhb-update_ma] FHB Update from PA, 05/09/18

[FHB Updates - Mid Atlantic SWW Region]

Wheat in lower Delaware is flowering, and barley in lower Pennsylvania is
heading. If you farm in these areas, your scab infection risk is currently
low, with the exception of the extreme southeast corner of Sussex County,
DE. 
As temperatures warm and humidity increases across the region, it is likely
our infection risk levels will increase. Please stay tuned to this risk tool
since the crops are moving along, too. 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 https://www.scabusa.org