The latest Prairie wind trajectory cereal rust risk report is available for download now at the following link: June 16-21, 2021 report.
As of the week of June 16-21, 2021 the overall Prairie cereal rust risk assessment and need for in-crop scouting is as follows:
Pacific Northwest – Even though there was a moderate number of reverse wind trajectories that passed over the PNW region and into the prairies, given limited stripe rust development in the PNW, and dry conditions in a significant portion of the Prairie region, for the week of June 16-21, 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. There have been some reports of stripe rust in barley from Washington State and Oregon and central to western Prairie producers and consultants may want to keep an eye out for this disease as barley fields progress.
Kansas/Nebraska – Although stripe rust has developed in Kansas, and was progressing in Nebraska, winter wheat crops are moving towards later growth stages, while active sporulation is declining or has stopped, especially in Kansas. There was a low number of recent wind trajectories from this area into the Prairie region for June 16-21, 2021, as well as generally limited rainfall in Saskatchewan and Manitoba. As a consequence for the week of June 16-21, 2021, the risk of leaf and stripe rust appearance from the Kansas-Nebraska corridor is low, especially as the Kansas winter wheat crop continues towards maturity and harvest, while harvesting of the Nebraska winter wheat crop will start over the next 1-3 weeks. Scouting for this disease from this US region is generally not urgent in the Prairie region.
