Wheat School: Flag leaf or head timing — when is a fungicide application warranted?

There are a few different scenarios to look at when it comes to deciding whether or not to spray a fungicide on wheat.

Jeremy Boychyn, agronomy research extension manager with the Alberta Wheat and Barley Commissions, says there are four key times that producers are either already going over the field, or their is potential value for an application: herbicide timing, PGR timing, flag leaf timing, or head timing.

According to research that has been conducted in Western Canada and parts of the Northern Plains in the U.S., in order to get the most out of a fungicide application, PGR timing and herbicide timing is just too early.

Where results have been more positive is when targeting either flag leaf and head timing. With that knowledge in hand, says Boychyn, we can start asking the important questions about what product, when, and if to go in at all.

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