The latest Prairie wind trajectory cereal rust risk report is available for download now at the following link: May 28 to June 3, 2021 report.
As of the week of May 28 to June 3, 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, for the week of May 28 – June 3, 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 crop development is
moving towards maturity and harvest in this region, no recent wind trajectories
from this area, dry conditions in the eastern Prairie region, and early stages
of Prairie spring crop development, for
the week of May 28 – June 3, 2021, the
risk of leaf and stripe rust appearance from the Texas-Nebraska corridor is low. However, scouting for these
diseases in winter wheat fields in central to eastern Saskatchewan, although
not urgent, is recommended over the next 1-2 weeks given previous trajectories
from May 21-27, 2021, and especially in those fields planted to stripe rust
susceptible varieties.
Kansas-Nebraska corridor: Stripe rust is continuing
to develop in Kansas, and is progressing in Nebraska, while there were limited
to no recent wind trajectories from this area into the Prairie region. For
the week of May 28 – June 3, 2021, the risk of leaf and stripe rust appearance
from the Kansas-Nebraska corridor is generally low, especially in relation to
the limited number of wind trajectories from this region over this period. Scouting for these diseases in
winter wheat fields, although not urgent, is recommended over the next 1-2
weeks given previous trajectories from May 21-27, 2021, and especially in those fields
planted to stripe rust susceptible varieties.
