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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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Designing a Robotic Berry Picker

Video: Designing a Robotic Berry Picker


Since blackberries must be harvested by hand, the process is time-consuming and labor-intensive. To support a growing blackberry industry in Arkansas, food science associate professor Renee Threlfall is collaborating with mechanical engineering assistant professor Anthony Gunderman to develop a mechanical harvesting system. Most recently, the team designed a device to measure the force needed to pick a blackberry without damaging it. The data from this device will help inform the next stage of development and move the team closer to the goal of a fully autonomous robotic berry picker. The device was developed by Gunderman, with Yue Chen, a former U of A professor now at Georgia Tech, and Jeremy Collins, then a U of A undergraduate engineering student. To determine the force needed to pick blackberries without damage, the engineers worked with Threlfall and Andrea Myers, then a graduate student.