This method describes how to determine whether a lot of barley or wheat is contaminated with Fusarium graminearum using mannitol agar.
Fusarium graminearum contamination in barley or wheat can be visually determined with the naked eye after three to five days of incubation on mannitol agar.
Fusarium culmorum contamination in barley or wheat can be visually determined with the naked eye after three to five days of incubation on mannitol agar to which malachite green has been added.