Wheat Disease Identification Guide - University of Idaho Extension ...

Wheat soilborne mosaicWinter wheat infected by wheat soilborne mosaicdevelops a pale-yellow discoloration shortly after breakingdormancy in the spring. The incidence of wheat soilbornemosaic is often greater in low areas of a field, wheremoist soil conditions favor growth of the protozoa thatspread this viral disease. Leaves of infected plants oftenhave a mosaic pattern of dark green blotches on a paleyellowbackground. Symptoms normally fade when warmweather slows the viral activity within infected plants.Management: Genetic resistance.Disease affecting leaves15