The University of Idaho confirmed late last week the detection of stripe rust in the southern portion of the state.  The rust was found in breeding plots near Buhl.  The breeding line was reportedly significantly infected, but isolated, meaning the infections were not widespread in the field.

UI said most of the plots were just past flowering, and there is a long way to go for the winter crop to finish.  Because of the cool, wet weather, this year’s crop is roughly 10-14 days behind the five-year average.  Researchers added growers are mostly past the window of application for fungicides for winter wheat, and the stripe rust disease pressure is low.

The greatest threat will be for susceptible spring wheat varieties, and growers are encouraged to scout their spring wheat fields for infection, and if stripe rust is discovered, to contact your local Extension office as soon as possible.

In addition, Washington State University says stripe rust was reported in Oregon’s Umatilla County, as well as Washington’s Walla Walla and Adams counties.  WSU officials add not only has strip rust developed, it’s spreading quickly.


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