Across Western Canada, the cereal crop is very quickly approaching the critical period to decide on whether or not to apply a plant growth regulator, or PGR.

As Jeremy Boychyn, agronomy research extension manager with the Alberta Wheat and Barley Commissions, explains in our latest Wheat School episode, there's a few things we can think about when making the decision on whether PGR's will be beneficial to your wheat crop.

Number one, says Boychyn, is what is determining yield expectation of the crop.

"If you're heard into the 60, 70, 80 plus bushel range, that is the area where you're typically going to see more opportunity for lodging, and a PGR is going to be more beneficial," he explains.

The second factor is history of the field itself and whether crops grown on that field typically experience lodging or not.

"If you're not seeing lodging on that field," says Boychyn, "maybe it's not the best place to spend your money."

The third factor, is variety selection and lodging rating. Varieties are known to react differently to different inputs and PGRs are no different. Variety choice is going to play into how responsive the crop will be to a PGR application. Which, as Boychyn explains, is a good reminder to keep a test strip, if you are using a PGR on a certain variety for the first time, so you can note it down for next year.

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