Weekly Update 2025
Released June 13, 2025 ( Week 6 )
Welcome to Week 6 for the 2025 growing season! This week includes:• Weather synopsis• Predicted grasshopper development • Predicted bertha armyworm development• Wireworms• Alfalfa weevil• Cereal leaf beetle• Cabbage seedpod...
Weather synopsis ( Week 6 )
Similar to last week, the majority of the Prairie growing region was very warm between June 02 and June 08, with areas recording average temperatures around 13 °C (Fig. 1). In late May and early June, areas surrounding Winnipeg and Lethbridge were...
Predicted Grasshopper Development ( Week 6 )
The grasshopper model was developed for the migratory grasshopper, but closely represents the development of the other primary pest grasshopper species found in the prairie region. The model uses weather from the current growing season to estimate...
Predicted bertha armyworm development ( Week 6 )
The phenology model for bertha armyworm development on the Canadian prairies was developed by Ross Weiss and Owen Olfert. Model simulations were used to estimate development of bertha armyworm as of June 8, 2025. Model outputs predict that the...
Wireworms ( Week 6 )
Reminder - Wireworms are the larval stage of click beetles from the family Elateridae. Click beetles, the adult stage, do not cause damage to crops. Wireworms live in the soil, where it can take 4 or more years to complete larval development. In...
