Since 2019, the Prairie Crop Disease Monitoring Network (PCDMN) has released a series of weekly Cereal Rust Risk Reports throughout May and June. Read the OVERVIEW describing the collaborative nature of this effort and the methods employed. Information related to trajectory events based on forecast and diagnostic wind fields and cereal rust risk is experimental, and is offered to the public for informational purposes only.
The latest Prairie wind trajectory cereal rust risk report is available for download now at the following link: May 1-13, 2021 report.
As of May 13, 2021 the overall Prairie cereal rust risk assessment and need for in-crop scouting is as follows:
a. Rust inoculum from the 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, generally dry Prairie weather conditions, and early stages of Prairie crop development, as of May 13, 2021 the risk of stripe rust appearance from the PNW is limited and scouting for this disease is generally not urgent.b. Rust inoculum from the Texas-Oklahoma corridor – Given limited leaf and stripe rust development in this corridor, a limited number of recent wind trajectories from this area, generally dry Prairie weather conditions, and early stages of Prairie crop development, as of May 13, 2021 the risk of leaf and stripe rust appearance from the Texas-Nebraska corridor is limited and scouting for these diseases is not urgent.c. Rust inoculum from the Kansas-Nebraska corridor – Although stripe rust is continuing to develop in Kansas, it is just starting to develop in Nebraska, there were a limited number of recent wind trajectories from this area, generally dry Prairie weather conditions, and early stages of Prairie crop development, as of May 13, 2021 the risk of leaf and stripe rust appearance from the Kansas-Nebraska corridor is limited and scouting for these diseases is not urgent. However, rust risk for the prairie region, especially for stripe rust, may increase with further rust development in these States coupled with more frequent wind trajectories from this region.