Volunteer wheat can provide the summer "green bridge" for the disease wheat streak mosaic and other virus diseases. This almost always occurs as a result of wheat seed shattered from heads during hail storms.
As of June 10, diseases in Nebraska wheat fields remained at trace to low levels. Stripe rust was detected in a grower’s field in southeast Nebraska (Thayer County) on May 27, but hot and dry weather prevented its development.
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.
Reports indicate that stripe rust is present in Oklahoma and northeast Kanas. These reports suggest that there is a high likelihood that stripe rust will occur in Nebraska wheat fields. Leaf rust is also likely to occur, but we expect to see stripe rust first.