Proposed Re-evaluation Decision PRVD2022-03, Chondrostereum purpureum strain PFC2139 and Its Associated End-use Products

Notice to the reader:

The online consultation is now closed.

Pest Management Regulatory Agency
22 March 2022
ISSN: 1925-0967 (PDF version)
Catalogue number: H113-27/2022-3E-PDF (PDF version)

Table of contents

• Proposed re-evaluation decision
• Next steps
• Additional scientific information

Proposed re-evaluation decision

Under the Pest Control Products Act, all registered pesticides must be regularly 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 to all re-evaluations.

Chondrostereum purpureum strain PFC2139 is a naturally-occurring biological herbicide registered for use in Canada for inhibiting resprouting and regrowth from cut stumps of certain deciduous trees in rights-of-way and for forest vegetation management. Chondrostereum purpureum strain PFC2139 is a native, fungus that is commonly distributed across Canada. The fungus is not host specific and has a wide host range with a preference for broad-leaved trees. Currently registered products containing Chondrostereum purpureum strain PFC2139 can be found in Appendix I of the full version of PRVD2022-03, Chondrostereum purpureum strain PFC2139 and Its Associated End-use Products.

This document (PRVD2022-03) presents the proposed regulatory decision for the re-evaluation of Chondrostereum purpureum strain PFC2139.

These products are shown to have value in providing a pest management solution. When the label directions are followed, potential risks to human health from occupational, dietary, and bystander exposure and to the environment are acceptable. Label directions, including risk mitigation measures to protect human health and the environment, must be followed by law. In order to meet current standards, label updates for products containing Chondrostereum purpureum strain PFC2139 are proposed in Appendix II of PRVD2022-03.

Under the authority of the Pest Control Products Act, and based on the evaluation of currently available scientific information, products containing Chondrostereum purpureum strain PFC2139 listed in Appendix I of PRVD2022-03 are proposed for continued registration in Canada. All products containing Chondrostereum purpureum strain PFC2139 registered in Canada are subject to this proposed re-evaluation decision.

This document is subject to a public consultation,^{Footnote 1} during which written comments and additional information may be submitted to PMRA Publications. Before making a final re-evaluation decision on Chondrostereum purpureum strain PFC2139, Health Canada will consider any written comments received in response to this consultation document.

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 this proposed re-evaluation decision.

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.

The relevant confidential test data on which the decision is based (as referenced in PRVD2022-03) are available for public inspection, upon application, in the PMRA's Reading Room. For more information, please contact the PMRA's Pest Management Information Service by phone (1-800-267-6315) or by e-mail (pmra-info-arla@hc-sc.gc.ca).

Additional scientific information

No additional data are required.