The wheat crop condition was good to excellent in the majority of fields surveyed this week in south central and southwest Nebraska. Stripe rust has been confirmed in 15 counties; leaf rust has been confirmed in one county.
A survey of wheat fields in southern west central Nebraska (Furnas and Harlan Counties) on May 19 found most fields to have little or no disease. Two fields had a high incidence of barley yellow dwarf.
This year late-season hailstorms led to increases in volunteer wheat that emerged shortly before wheat harvest. If left uncontrolled until wheat emergence in the fall, growers can expect a large buildup of mites and virus, leading to yield-robbing disease outbreaks next spring and summer.
Four videos illustrate the spread of wheat curl mites among neighboring wheat fields and the importance of controlling these mites to curtail the development of three key viruses of winter wheat in Nebraska.