[Fhb-update_ma] FHB Update from MD, 05/14/19

[FHB Updates - Mid Atlantic SWW Region]

Wheat in the Eastern shore has finished flowering, except for a few late
planted fields. Up in the north, wheat is anywhere from head emergence to
beginning of flowering. The FHB risk for Maryland is high across the state.
If your wheat is flowering (50% of the main tillers showing yellow anthers),
it is advised to spray fungicides for scab. The best stage recommended for
spraying fungicides is early flowering or within 4-5 days of that. The
fungicides effective for FHB are Prosaro/ Caramba/ Miravis-Ace. These
fungicides do not need to be tank mixed with another product for spraying.
The fungicide products should be applied at the full rate recommended by the
manufacturers. Strobilurin containing fungicides should not be sprayed at
this stage. Aerial application at a rate of 5 gallons per acre or ground
application at 15 gallons per acre with 300-350 um droplet size is
recommended. Spray nozzles should be angled at 30°-45° down from
horizontal, toward the grain heads, using forward- and backward mounted
nozzles or nozzles with a two directional spray, such as Twinjet nozzles. 

--Nidhi Rawat, Small grains Pathologist, University of Maryland

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