HAZELTON, Idaho — University of Idaho researchers detected stripe rust in a wheat field near Hazelton May 29.
The plant disease, which can cause yield losses of up to 60 percent in susceptible wheat varieties, was confirmed in one field of Brundage soft white winter wheat near Hazelton, which is east of Twin Falls.
UI plant pathologist Juliet Marshall alerted growers about the find today. She said the disease showed up in southern Idaho much earlier than she expected this year and was likely blown in from Arizona or northern California.
The affected field showed heavy and uniform stripe rust infection and there’s a good chance the disease could be much more widespread, Marshall said.
“If you have a susceptible variety, you better be spraying,” she said.
Stripe rust in winter wheat was also detected in the Parma area in southwestern Idaho.