Extension
Date of this Version
2002
Abstract
Management practices for wheat streak mosaic and high plains diseases of wheat are discussed in this NebFact.
Wheat streak mosaic and high plains diseases occur from mid-May to July and September to October. Both viruses are transmitted by the wheat curl mite.
Symptoms of wheat streak mosaci are yellow to light green mosaic pattern of parallel discontinuous streaks on leaves. Plants are somewhat stunted and rosetted. Affected fields often show a yellow gradient from the edge to the center. Symptoms of high plans disease are leaves with a mosaic pattern of yellow spots and streaks and yellow areas in fields. Dual infection with wheat streak mosaic often causes premature death. Outbreaks of both wheat streak mosaic and high plains are associated with the presence of volunteer wheat.
To manage, check for the presence of wheat curl mites in volunteer wheat. Destroy volunteer wheat that arose before harvest due to hail at least one month before fall planting. Practice weed control, do not plant winter wheat adjacent to late maturing corn and follow date of planting recommendations for your geographical area.
Comments
© 2002, The Board of Regents of the University of Nebraska on behalf of the University of Nebraska–Lincoln Extension. All rights reserved.