Proposed Re-evaluation Decision PRVD2022-05, 1‑Methylcyclopropene and Its Associated End-use Products

Pest Management Regulatory Agency
24 March 2022
ISSN: 1925-0967 (PDF version)
Catalogue number: H113-27/2022-5E-PDF (PDF version)

Table of contents

• Proposed re-evaluation decision
• Next Steps
• Other information
• Additional Scientific Information

Proposed re-evaluation decision

Under the authority of the Pest Control Products Act, all registered pesticides must be re- evaluated by Health Canada’s Pest Management Regulatory Agency (PMRA) to ensure that they continue to meet current health and environmental standards and continue to have value. The re- evaluation considers data and information from pesticide manufacturers, published scientific reports, and other regulatory agencies. Health Canada applies internationally accepted risk assessment methods as well as current risk management approaches and policies.

1-Methylcyclopropene is a plant growth regulator that inhibits production of ethylene, a plant hormone that promotes fruit ripening and senescence. It is used to preserve cut flowers and fruits (apples, bananas, pears and tomatoes) when applied as a post-harvest (in storage) use. It is also applied as a pre-harvest aid to apples, which delays ripening and prevents fruit drop. Currently registered products containing 1-methylcyclopropene are listed in Appendix I of the full version of PRVD2022-05. This document (Proposed Re-evaluation Decision PRVD2022-05, 1‑Methylcyclopropene and Its Associated End-use Products) presents the proposed regulatory decision for the re-evaluation of 1-methylcyclopropene.

When the current label directions are followed, the products are shown to have value, and potential risks to human health (occupational, dietary, residential and bystander) and the environment (aquatic and terrestrial organisms) are considered to be acceptable. Registered pesticide product labels include specific directions for use. Directions include risk mitigation measures to protect human health and the environment that must be followed by law. As a result of the re-evaluation of 1-methylcyclopropene, no additional risk mitigation measures are proposed by Health Canada. However, label updates are proposed to meet the current labelling standards (Appendix II of PRVD2022-05).

Under the authority of the Pest Control Products Act, and based on the evaluation of currently available scientific information, Health Canada is proposing that products containing 1‑methylcyclopropene are acceptable for continued registration for sale and use in Canada, provided that the proposed updates to label directions (Appendix II of PRVD2022-05) are in place. All products containing 1-methylcyclopropene registered in Canada are subject to this proposed re-evaluation decision. This document (PRVD2022-05) is subject to a public consultation,^{Footnote 1} during which written comments and additional information may be submitted to PMRA Publications. The final re-evaluation decision will be published taking into consideration the comments and information received during consultation.

Next Steps

The public, including the registrants and stakeholders, are encouraged to submit comments and additional information during the 90-day public consultation period upon publication of PRVD2022-05.

All comments received during the 90-day public consultation period will be taken into consideration in preparation of the re-evaluation decision document^{Footnote 2}, which could result in revised risk mitigation measures. The re-evaluation decision document will include the final re-evaluation decision, the reasons for it and a summary of comments received on the proposed re-evaluation decision with Health Canada’s responses.

Other information

When Health Canada makes its re-evaluation decision, it will publish a Re-evaluation Decision on 1-methylcyclopropene (based on the Science Evaluation of PRVD2022-05). In addition, the test data referenced in this consultation document will be available for public inspection, upon application, in the PMRA’s Reading Room.

Additional Scientific Information

No additional data are required.