The latest Prairie wind trajectory cereal rust risk report is available for download now at the following link: May 21-27, 2021 report.
As of May 27, 2021 the overall Prairie cereal rust risk assessment and need for in-crop scouting is as follows:
Pacific Northwest: Even though there were a number of reverse wind trajectories that passed over the PNW region and into the prairies, given limited stripe rust development in the PNW and early stages of Prairie spring crop development, as of May 27, 2021 the risk of stripe rust appearance from the PNW is limited and scouting for this disease from this US region is generally not urgent.
Texas-Oklahoma corridor: Given increasing stripe rust development in this corridor (especially Oklahoma), an increased number of recent wind trajectories from this area into the central to western Prairie region, as well as the Kindersley, SK area, and early stages of Prairie spring crop development, as of May 27, 2021 the risk of leaf and stripe rust appearance from the Texas-Nebraska corridor is low-moderate. Scouting for these diseases in winter wheat fields in central to eastern Saskatchewan as well as the Kindersley region, and Manitoba locations is recommended over the next 1-2 weeks, especially those planted to stripe rust susceptible varieties.
