Plant growth regulators : what agronomists need to know

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Description

This document summarized the use, performance, and limitations of plant growth regulators (PGRs) in western Canadian cereal production. It reviewed two types of PGRs: ethephon (Ethrel) and chlormequat chloride (Manipulator), and discussed their physiological effects, including reduced stem elongation and altered tillering. Field trials showed variable cultivar responses, with some wheat varieties benefiting from dual PGR applications. The document emphasized the importance of precise crop staging for effective application and noted trade and regulatory constraints, such as maximum residue limits (MRLs), that limit adoption. Research indicated inconsistent yield effects but highlighted potential protein content changes and the role of fungicide co application.

Updated

November 1, 2017

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Plant growth regulators : what agronomists need to know

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Title and publication information

Type

Fact Sheet

Series Title

Agri-facts

Frequency

Once

Publisher / Creator Information

Creator

Agriculture and Forestry

Publisher

Agriculture and Forestry

Subject Information

Topic

Agriculture

Subject (LCSH)

Plant regulators -- Alberta

Subject (LCSH)

Agricultural chemicals

Resource Dates

Date Created

2017-11-01

Date Added

2026-06-23T21:25:39.025596

Date Modified

2017-11-01

Date Issued

2017-11-01

Date Archived

2026-06-23

Audience information

Farmers Researchers Scientists

Language

English (Canadian)

Identifiers

AGDEX number

100/548-1

Usage / Licence

Usage Considerations

Digital reproduction of a Government of Alberta print publication.

Licence

Open Government Licence - Alberta

Contact

Available Fields

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Plant growth regulators : what agronomists need to know

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plant-growth-regulators-what-agronomists-need-to-know

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Fact Sheet
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Agriculture and Forestry
```
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```
Strydhorst, Sheri
```
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```
Hall, Linda M.
```
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```
Perrott, Laurel
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Plant regulators -- Alberta
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Agricultural chemicals
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  2026-06-23
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usageconsiderations | Usage Considerations

Digital reproduction of a Government of Alberta print publication.

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English (Canadian)
```
license_id | Licence
```
Open Government Licence - Alberta
```
sensitivity | Sensitivity
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Unrestricted
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Pkg Data

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Plant growth regulators : what agronomists need to know

Archived

Description

Updated

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