Proposed Maximum Residue Limit PMRL2022-02, Pyraziflumid

Notice to the reader:

The online consultation is now closed.

Pest Management Regulatory Agency
28 February 2022
ISSN: 1925-0843 (PDF version)
Catalogue number: H113-24/2022-2E-PDF (PDF version)

Table of Contents

• Purpose of consultation
• Dietary health assessment
• Proposed MRLs
• International situation and trade implications
• Next steps

Purpose of consultation

Maximum residue limits (MRLs)^{Note de bas de page 1} are being proposed as part of the following applications submitted under pesticide submission numbers 2019-6614 and 2019-7155 for Canadian use, and submission number 2019-7049 for imported commodities.

Under the authority of the Pest Control Products Act, Health Canada’s Pest Management Regulatory Agency (PMRA) is proposing acceptability of the uses requested under the above-noted applications to register the technical grade pyraziflumid and the end-use product Parade Fungicide for use in Canada on apples, for the broad spectrum control of scab and powdery mildew.

The evaluation of these pyraziflumid applications indicated that the end-use product has value, and the human health and environmental risks associated with their proposed uses are acceptable. Details regarding these applications can be found in Proposed Registration Decision PRD2022‑04, Pyraziflumid and Parade Fungicide, posted to the Canada.ca website on 28 February 2022. Dietary risks from the consumption of foods listed in Table 1 were shown to be acceptable when pyraziflumid is used according to the supported label directions. Therefore, foods containing residues at these levels are safe to eat, and MRLs are being proposed as a result of this assessment.

In addition, Health Canada is proposing acceptability to specify MRLs for pyraziflumid on various imported commodities, for the control or suppression of certain fungal diseases, to permit the import and sale of food containing such residues. Health Canada has determined the quantity of residues that are likely to remain in or on the imported commodities when pyraziflumid is used according to label directions in the exporting country, and that such residues will not be a concern to human health. Details regarding the proposed MRLs on imported commodities can also be found in PRD2022-04, Section 3.8.

Dietary health assessment

In assessing the risk of a pesticide, Health Canada combines information on pesticide toxicity with information on the degree and duration of dietary exposure to the pesticide residue from food. The risk assessment process involves four distinct steps:

• Identifying the toxicology hazards posed by the pesticide;
• Determining the “acceptable dietary level” for Canadians (including all vulnerable populations), which is protective of adverse health effects;
• Estimating human dietary exposure to the pesticide from all applicable sources (domestic and imported commodities); and
• Characterizing human risk by comparing the estimated human dietary exposure to the acceptable dietary level.

Before registering a pesticide for food use in Canada, Health Canada must determine the quantity of residues that could remain in or on the food when the pesticide is used according to label directions and that such residues will not be a concern to human health (Steps 3 and 4). If estimated human exposure is less than or equal to the acceptable level (developed in Step 2), Health Canada’s determination is that the consumption of this amount of residue is safe. This quantity is then subject to consultation to legally specify it as an MRL. An MRL applies to the identified raw agricultural food commodity, as well as to any processed food product that contains it, except where separate MRLs are specified for the raw agricultural commodity and a processed product made from it.

Consultation on the proposed MRLs for pyraziflumid is being conducted via this document and PRD2022-04. Health Canada invites the public to submit written comments on the proposed MRLs for pyraziflumid in accordance with the guidance reported in the Next Steps Section, and with the guidance found in PRD2022-04.

To comply with Canada’s international trade obligations, consultation on the proposed MRLs is also being conducted internationally by notifying the World Trade Organization, as coordinated by Canada’s Notification Authority and Enquiry Point.

Proposed MRLs

The proposed MRLs for pyraziflumid are summarized in Table 1.

An MRL is proposed for each commodity included in the listed crop groupings in accordance with the Residue Chemistry Crop Groups webpage in the Pesticides section of Canada.ca

MRLs established in Canada may be found using the Maximum Residue Limit Database on the Maximum Residue Limits for Pesticides webpage. The database allows users to search for established MRLs, regulated under the Pest Control Products Act, both for pesticides or for food commodities.

International situation and trade implications

Pyraziflumid is a new active ingredient that is concurrently being registered in Canada and the United States. The MRLs proposed for pyraziflumid in Canada are the same as corresponding tolerances to be promulgated in the United States.

Once established, the American tolerances for pyraziflumid will be listed inthe Electronic Code of Federal Regulations, 40 CFR Part 180, by pesticide.

Currently, there are no Codex MRLs^{Footnote 2} listed for pyraziflumid in or on any commodity on the Codex Alimentarius Pesticide Index webpage.

Next steps

The PMRA invites the public to submit written comments on the proposed MRLs for pyraziflumid up to 75 days from the date of publication of this document. Please forward your comments to Publications. Health Canada will consider all comments received and a science-based approach will be applied in making a final decision on the proposed MRLs. Comments received will be addressed in a separate document linked to this PMRL. The established MRLs will be legally in effect as of the date that they are entered into the Maximum Residue Limit Database.