[Fhb-update_ma] FHB Update from MD, 05/11/15
FHB Updates - Mid Atlantic SWW Region
fhb-update_ma at scabusa.org
Mon May 11 08:27:01 EDT 2015
Wheat has begun to flower in Southern Maryland and the Lower Eastern Shore
and will progress through the state this week. The risk of a serious and
widespread scab epidemic is low because conditions have not been favorable
for high numbers of spores to be developed. However warm humid conditions
coupled with showers that may develop over the next week to ten days will
make it possible for some infection to occur on very susceptible and
susceptible varieties. There is also an unconfirmed report of stripe rust in
Southern Maryland. Therefore it is highly advisable to scout fields at or
near flowering for signs of rust infection to determine your need for a
fungicide application, and to continue to monitor this website for changes
in scab risk. The fungicides, Prosaro and Caramba, registered for use at
flowering for scab management are also effective against rust. See my
previous comment posted on May 4 for sources of varietal resistance
information and fungicide application comments. You can see the previous
post by changing the Assessment date in the Weather Forecast Mode section of
the risk assessment tool.
--Arv Grybauskas, Extension Plant 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 http://www.scabusa.org
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