Fire Blight Risk Remains High, May 24-29

Fire blight infection risk continues to be high to extreme/exceptional from May 24-29 in many regions of the province according to the OMAFRA prediction maps for apples and pears. Later regions will be in bloom shortly. Early regions should watch for rattail bloom in any blocks that are in petal fall.

 

Growers should keep a protective program until the risk drops back down below high. The rain, windy days and increasing pollinator activity this week will have moved bacteria to open blossoms, particularly if fire blight has been an issue in the orchard or neighbourhood. Infection will occur with any wetting event if a protectant program is not in place under high to extreme risk conditions. Under extreme risk, even orchards that did not have fire blight last year are likely to see infection.

Video: White Mold in Winter Canola | Timing, Treatment & Taking Control | Pioneer Agronomy

White mold can be one of the most damaging diseases in winter canola, but with the right approach, it doesn’t have to be.

In this video, Pioneer field agronomist Greg Pfeffer breaks down what to watch for, when to act, and how to stay ahead of infection. From early spring green-up to the critical 25% flowering stage, learn why timing is everything and how a preventative mindset can protect your yield.

This video also discusses fungicide strategies, including why multiple modes of action like Group 3, 7, and 11 offer the strongest defense. If you’re growing canola or considering it, this is your practical guide to smarter disease control in the field.