The latest Prairie PCDMN wind trajectory cereal rust risk report is available for download now at the following link: June 28 to July 4, 2022 report.
As of the week of June 28-July 4, 2022 the overall Prairie cereal rust risk assessments and need for in-crop scouting are as follows:
Pacific Northwest – There was a low-moderate number of wind trajectories that passed over the PNW region from June 28-July 4, 2022 and into the prairies, while key stages of crop development are occurring for spring wheat. Winter wheat is well into grain filling and the potential impact of stripe rust arrival is reduced compared to earlier growth stages. In terms of stripe rust development in the PNW there have been increasing reports of occurrence including in commercial fields. Some Prairie regions (Alberta) where most trajectories ended , did receive more moisture from June 28-July 4, 2022. Thus, as of July 4, 2022, the risk of stripe rust appearance from the PNW is low to moderate, while scouting for this disease in the Prairie region should be considered for those locations that received increased trajectories and moisture, especially where stripe rust susceptible varieties are planted.
Kansas-Nebraska corridor – Currently there is limited leaf and stripe rust development in this corridor, a low number of recent wind trajectories from this area, while rainfall was lower in the eastern Prairie region. Given these conditions, as of July 4, 2022, the risk of leaf and stripe rust appearance from the Kansas-Nebraska corridor is generally limited and scouting for these diseases in the Prairies is not urgent.
