The fourth weekly Prairie Crop Disease Monitoring Network (PCDMN) Prairie wind trajectory cereal rust risk report for 2025 is available for download now at the following link: May 27-June 2, 2025 report Pacific Northwest Texas-Oklahoma corridor Kansas-Nebraska corridor.
Please note that the previous third weekly Prairie Crop Disease Monitoring Network (PCDMN) Prairie wind trajectory cereal rust risk report for 2025 is currently being updated as there were some data processing issues in relation to the wind trajectories.
General weather and crop conditions
- Prairie winter wheat crops are generally in the flag leaf emergence to booting growth stages, while much of the spring wheat crop is now seeded with plants ranging from the seedling to 4-5 leaf stages, with tillering starting in some fields.
- Temperatures have been somewhat higher than normal for most of the Prairie region since April 1, 2025, and from May 25-June 1, 2025 temperatures have ranged from around 8.5 to 15.7°C.
- These temperatures are generally not conducive to rust development, although cooler temperatures are more conducive for stripe rust versus leaf and stem rust.
- Growing season rainfall for the Prairie region has been generally drier than normal.
- Recent rainfall in some areas the Prairies could potentially have washed rust spores from the air and into wheat crops, especially winter wheat, while also resulting in canopy moisture conditions that may favour infection and further rust development.
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