[Fhb-update_ma] FHB Update from MD, 05/18/11

FHB Updates - Mid Atlantic SWW Region fhb-update_ma at scabusa.org
Wed May 18 06:41:19 PDT 2011


The risk level for scab is high to medium for a broad swath of Maryland (May 18). The weather forecasts indicate that the risk level will remain high through the week and into next. Many of the medium risk areas will become high risk with this weather pattern. In the regions where the risk level is medium to high, wheat that is flowering should be considered for fungicide application. Wheat that is about 5 days or more past initial flowering cannot be treated. The labels state the last stage of application is mid-flower and there is a 30-day to harvest restriction. Since fungicides do not completely protect the plant, and fields that are past flowering can get some infection, it is recommended that areas that are designated as medium to high risk be harvested with a high fan speed on the combine. This will clean out some of the infected seed that tends to be lighter and will reduce the toxin level in the final product.

 --Arv Grybauskas, Extension Plant Pathologist, University of Maryland

 For more details, go to the FHB Risk Assessment Tool at http://www.wheatscab.psu.edu/riskTool_2011.html


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