Proposed Maximum Residue Limit PMRL2021-21, Ametoctradin

Notice to the reader:

The online consultation is now closed.

Pest Management Regulatory Agency
29 June 2021
ISSN: 1925-0843 (PDF version)
Catalogue number: H113-24/2021-21E-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 the new use on blackberries to the product label of Zampro Fungicide, containing technical grade ametoctradin and dimethomorph, is acceptable. The specific uses approved in Canada are detailed on the label of Zampro Fungicide, Pest Control Products Act Registration Number 30321.

The evaluation of this ametoctradin and dimethomorph application indicated that the end-use product has value and the human health and environmental risks associated with the new use 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 ametoctradin is being conducted via this document (see Next steps). A summary of the field trial data used to support the proposed MRL can be found in Appendix I. MRL consultation for the other active ingredient, dimethomorph, present in Zampro Fungicide is being conducted under a separate action.

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 ametoctradin, is as follows.

Table 1 Proposed maximum residue limits for ametoctradin
Common name Residue definition MRL
(ppm)Table 1 Footnote 1
Food commodity
Ametoctradin 5-ethyl-6-octyl[1,2,4]triazolo[1,5-a]pyrimidin-7-amine 3.0 Caneberries (crop subgroup 13-07A)

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

MRLs may vary from one country to another for a number of reasons, including differences in pesticide use patterns and the locations of the crop field trials used to generate residue chemistry data.

Currently, there are no American tolerances for ametoctradin in or on the petitioned commodities listed in the Electronic Code of Federal Regulations, 40 CFR Part 180, by pesticide; nor are there Codex MRL.Footnote 1 listed for ametoctradin in or on the petitioned commodities on the Codex Alimentarius Pesticide Index webpage.

Next steps

The PMRA invites the public to submit written comments on the proposed MRL for ametoctradin 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 limits

Residue data for ametoctradin on blackberries and raspberries were submitted to support the use of Zampro Fungicide on blackberries.

Maximum residue limits

The recommendation for the maximum residue limit (MRL) for ametoctradin 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 caneberries.

Table A1 Summary of field trial data used to support the MRLs
Commodity Application method/Total application rate
(g a.i./ha)Table A1 Footnote 1
Preharvest interval
Lowest average field trial residues
Highest average field trial residues
Raspberry and Blackberry 906–927 13–14 0.674 1.12

Following the review of all available data, the MRL as proposed in Table 1 is recommended to cover residues of ametoctradin. Residues of ametoctradin 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.

Report a problem or mistake on this page
Please select all that apply:

Thank you for your help!

You will not receive a reply. For enquiries, contact us.

Date modified: