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Researcher believes plant growth regulators are worth a try

Research being conducted on plant growth regulators (PGR) show the product can help a cereal crop but there are no guarantees.

There has been increased use of these products on the prairies, according to Dr. Breanne Tidemann, a research scientist with Agriculture and Agri-Food Canada based in Lacombe, Alta.

Tidemann said PGRs are chemicals that are applied to plants that change how they grow. In western Canadian agriculture, it is typically used to shorten the plants and then reduce their chance of lodging in field crops.

“Wheat and barley in particular are the two that we’re using them on, and the goal is to be able to up nitrogen rates and still get some increased yield, but not get the increased height with the plants falling every which way that we sometimes see when we do that,” Tidemann said.

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Trending Video

Supplemental Nitrogen on Soybeans: Can Early Nitrogen Increase Yield?

Video: Supplemental Nitrogen on Soybeans: Can Early Nitrogen Increase Yield?

Can supplemental nitrogen help soybeans reach higher yield potential? Technical Agronomist Tim Sickman walks through an ongoing trial at the Nutrien Innovation Farm in Owensboro, Kentucky, exploring whether a modest amount of nitrogen applied at planting can support higher-yielding soybean environments.

The trial compares 30 pounds of supplemental nitrogen across both 15- and 30-inch rows, along with treatments that include sulfur and micronutrients. Similar trials conducted in 2024 and 2025 delivered a six- to seven-bushel yield response, prompting the team to expand the research this season.

Early observations show that treated soybeans are slightly taller and averaging about two additional nodes on the main stem. These added nodes could create more opportunities for blooms and pods, but the true results will come at harvest when the team evaluates pod development, seed fill and final yield.

In This Video:

Why high-yield soybeans may need supplemental nitrogen

Results from the 2024 and 2025 trials

Nitrogen treatments in 15- and 30-inch rows

Fertilizer placement and application methods

Differences in plant height and node counts

Potential effects on pod development and yield