âPathogen diversity
In the Northwest, a recent survey with collaborators from University of Idaho, Oregon State University, and Washington State University showed that Fusarium sambucinum and Fusarium oxysporum were the two most prevalent species associated with Fusarium dry rot in the region. Other species found in the region that were shown to cause dry rot include F. avenaceum, F. cerealis, F. culmorum, F. graminearum, and F. redolens, among others (Table 1). The different species that cause dry rot can look very different when they are in pure culture (Figure 1). Laboratory tests can determine which pathogen is causing dry rot.