Cereal rust risk report April 1 to June 29 2026 stripe rust reported in Alberta and eastern Canada along with leaf and stem rust in eastern Canada

Stripe rust development in Alberta

There are reports of stripe rust developing in Alberta, though at low levels to date. The wheat crop is maturing in the Pacific Northwest and will decline as a source of inoculum as it is harvested. The spread and development of stripe rust in Alberta now depends more on weather and crop conditions within the province going forward.

No rust reports to date in Saskatchewan and Manitoba

Cereal crops in the southern US states have nearly been harvested and were affected severely by drought this crop season. Spring cereals in the northern states are still developing but there are no reports to date of rust infection in these northern states. Crop development in many parts of Saskatchewan and Manitoba is delayed relative to normal, and frequent and heavy rains raise the risk of disease development in all crops. To date though there have been no reports of rust development in Saskatchewan and Manitoba.

Cereal rusts reported in eastern Canada

Colleagues in eastern Canada have reported symptoms of wheat leaf rust in Ontario, Quebec and Prince Edward Island. Wheat stem rust has been found in Ontario. Stripe rust has been found in Quebec and was also severe on winter wheat in Prince Edward Island.