Proposed Maximum Residue Limit PMRL2018-37, Dodine

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Pest Management Regulatory Agency
28 August 2018
ISSN: 1925-0843 (PDF version)
Catalogue number: H113-24/2018-37E-PDF (PDF version)

Under the authority of the Pest Control Products Act, Health Canada’s Pest Management Regulatory Agency (PMRA) has concluded that the addition of new uses on peaches and nectarines to the product label of Syllit 400 FL, containing technical grade dodine, is acceptable. The specific uses approved in Canada are detailed on the label of Syllit 400 FL, Pest Control Products Act Registration #28351.

The evaluation of this dodine application indicated that the end-use product has value and the human health and environmental risks associated with the new uses are acceptable.

Before registering a pesticide for food use in Canada, the PMRA must determine the quantity of residues that are likely to 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. This quantity is then legally established as a maximum residue limit (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 MRL for dodine is being conducted via this document (see Next Steps, the last section of this document). A summary of the field trial data used to support the proposed MRL can be found in Appendix I.

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

The proposed MRL, to be added to the MRLs already established for dodine, is as follows.

Table 1 Proposed Maximum Residue Limit for Dodine
Common Name Residue Definition MRL (ppm)Table 1 Footnote 1 Food Commodity
Dodine Dodecylguanidine monoacetate 5.0 Peaches subgroup (crop subgroup 12-09B)
Table 1 Footnote 1

ppm = parts per million

Return to table 1 footnote 1 referrer

MRLs are proposed for each commodity included in the listed crop groupings in accordance with the Residue Chemistry Crop Groups webpage in the Pesticides section of the Canada.ca website.

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

The MRL proposed for dodine in Canada is the same as the corresponding American tolerance and Codex MRLs.Footnote 1 American tolerances are listed in the Electronic Code of Federal Regulations, 40 CFR Part 180, by pesticide. A listing of established Codex MRLs is available on the Codex Alimentarius Pesticide Index webpage, by pesticide or commodity.

Next Steps

The PMRA invites the public to submit written comments on the proposed MRL for dodine up to 75 days from the date of publication of this document. Please forward your comments to Publications. The PMRA will consider all comments received before making a final decision on the proposed MRL. Comments received will be addressed in a separate document linked to this PMRL. The established MRL will be legally in effect as of the date that it is entered into the Maximum Residue Limit Database.

Appendix I

Summary of Field Trial Data Used to Support the Proposed Maximum Residue Limit

Residue data for dodine in peaches were submitted to support the domestic use of Syllit 400 FL on peaches and nectarines.

Maximum Residue Limit

The recommendation for a maximum residue limit (MRL) for dodine was based upon the submitted field trial data, and the guidance provided in the OECD MRL Calculator. Table A1 summarizes the residue data used to calculate the proposed MRL for crop subgroup 12-09B (Peaches).

Table A1 Summary of Field Trial Data Used to Support the MRL
Commodity Application Method/ Total Application Rate
(kg a.i./ha)Table A1 Footnote 1
Preharvest Interval (days) Lowest Average Field Trial Residues
(ppm)
Highest Average Field Trial Residues
(ppm)
Peaches Foliar/7.29 – 7.45 11–15 0.464 3.704
Table A1 Footnote 1

kg a.i./ha = kilograms of active ingredient per hectare

Table A1 Return to footnote 1 referrer

Following the review of all available data, an MRL as proposed in Table 1 is recommended to cover residues of dodine. Residues of dodine in these crop commodities at the proposed MRL will not pose an unacceptable risk to any segment of the population, including infants, children, adults and seniors.

Footnotes

Footnote 1

The Codex Alimentarius Commission is an international organization under the auspices of the United Nations that develops international food standards, including MRLs.

Return to footnote 1 referrer

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