Consultation on Trinexapac-ethyl and Its Associated End-use Products, Proposed Re-evaluation Decision PRVD2022-01

Health Canada is consulting Canadians on the proposal to continue registration of trinexapac-ethyl and all associated end-use products registered for sale and use in Canada, provided new risk mitigation measures are put in place.

Trinexapac-ethyl has value as a plant growth regulator, in managing turf growth on golf courses and sod farms by reducing the frequency of mowing and the amount of grass clippings. It also reduces lodging in perennial ryegrass grown for seed.

With respect to human health, dietary risks were shown to be acceptable when trinexapac-ethyl is used according to current conditions of registration. Occupational and postapplication risks were shown to be acceptable when trinexapac-ethyl is used according to proposed conditions of registration, which include new mitigation measures such as updated restricted-entry intervals, a drift mitigation label statement, and updated personal protective equipment label statements that reflect current standards.

The risks to the environment were shown to be acceptable when trinexapac-ethyl is used according to proposed conditions of registration, which include new mitigation measures such as additional precautionary label statements and a 1-metre spray buffer zone to protect terrestrial non-target plants and freshwater aquatic habitats.

For a full list of products containing trinexapac-ethyl, please consult Appendix I in the Proposed Re-evaluation Decision or visit the Pesticide Label Search database.

For more information on the proposed decision open the “Proposed Re-evaluation Decision”.

How to get involved

This consultation is open for comment from 25 January 2022 to 25 April 2022 (90 calendar days).

To comment on PRVD2022-01:

• Step 1 Request the full consultation document to read the Science Evaluation that is the basis of this proposed regulatory decision.
• Step 2 Submit comments to the PMRA Publications Section.

All comments received will be considered. A final re-evaluation decision will consider additional scientific information provided during the public comment period.

Please refer to the document title (for example: PRVD2022-01, Trinexapac-ethyl and Its Associated End-use Products) when providing comments.

Reporting to Canadians

Health Canada will make the results of this consultation available on this website. Once the decision is finalized, the PMRA will post a Re-evaluation Decision on the Pesticides and Pest Management Reports and Publications portion of Canada.ca.

If you have any questions, contact the Pest Management Information Service.

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