It has been reported in most counties in the eastern two thirds of Kansas and in many irrigated circles in southwest Kansas. Above 68 F disease progress stops.
Symptoms typically appear in early spring right after green-up.
By the time of jointing, mosaic symptoms have usually faded, but stunting may persist until maturity. Soilborne mosaic is usually first noticed as large, irregular areas of yellow, stunted wheat. The field pattern often follows the drainage pattern of the field because the fungal carrier requires moisture in order to infect. Unlike some other diseases, the patches of soilborne mosaic do not grow in size as the season progresses. Unfortunately, the typical symptoms are not always present.