Update on barley stripe rust 1997 Patrick Hayes, Ann Corey, Russ Karow, Chris Mundt OSU Stripe rust is not an end to Pacific Barley production as we know it, but I would rate it as the most serious biotic threat to production in the region. The disease has been reported in every western state. There have been commercial-level epidemics, the most severe in California.
Inoculum is probably present at varying levels throughout the region.
The other two pieces of the epidemic puzzle are genotype and environment. There are some very susceptible varieties, a group of intermediate types, some resistant varieties, and more on the horizon. The wild card is the environment. Colter, Russell, and Morex are extremely susceptible. Gwen, a winter 6-row, is extremely susceptible, but I do not believe there are commercial volumes of seed available.