Proposed Maximum Residue Limit PMRL2014-34, Metconazole

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Pest Management Regulatory Agency
6 June 2014
ISSN: 1925-0843 (PDF version)
Catalogue number: H113-24/2014-34E-PDF (PDF version)

Under the authority of the  Pest Control Products Act, Health Canada's Pest Management Regulatory Agency (PMRA) has received applications to register technical grade metconazole as a seed treatment and the end-use products Nipsit Suite Canola Seed Protectant, Metlock Fungicide and Nipsit Suite Cereals of Seed Protectant for use in Canada on canola, carinata, rapeseed, corn and wheat.

The evaluation of these metconazole applications indicated that the end-use product has merit and 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 PRD2014-14, Metconazole, posted to the Health Canada website on 23 May 2014.

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 MRLs for metconazole is being conducted via PRD2014-14. Information regarding the proposed MRLs can be found in Sections 3.5 and 7.1. The PMRA invites the public to submit written comments on the proposed MRLs for metconazole in accordance with the guidance found in PRD2014-14. Existing MRLs for clothianidin and metalaxyl are adequate to cover all uses of Nipsit Suite Canola Seed Protectant and Nipsit Suite Cereals of Seed Protectant.

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 the  Standards Council of Canada.

The proposed MRLs for metconazole are as follows.

Table 1 Proposed Maximum Residue Limits for Metconazole
Common Name Residue Definition MRL
(ppm)Table 1 footnote 1
Food Commodity

Table 1 footnotes

Table 1 footnote 1

ppm = parts per million

Return to table 1 footnote 1 referrer

Metconazole 5-[(4-chlorophenyl)methyl]-2,2-dimethyl-1-(1H-1,2,4-triazol-1-ylmethyl) cyclopentanol 0.04 Field corn, popcorn grain, sweet corn kernels plus cob with husks removed

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.

Table 2 compares the MRLs proposed for metconazole in Canada with corresponding American tolerances. American tolerances are listed inthe  Electronic Code of Federal Regulations, 40 CFR Part 180, by pesticide. Currently, there are no Codex MRLsFootnote 1 listed for metconazole in or on any commodity on the Codex Alimentarius  Pesticide Residues in Food website, by pesticide or commodity.

Table 2 Comparison of Canadian MRLs, American Tolerances and Codex MRLs (where different)
Food Commodity Canadian MRL (ppm) American Tolerance
Codex MRL
Field corn 0.04 0.02
(Field corn grain)
Not established
Popcorn grain 0.04 0.02 Not established
Sweet corn kernels plus cob with husks removed 0.04 0.01 Not established

Next Steps

The PMRA invites the public to submit written comments on the proposed MRLs for halauxifen-methyl 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 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.

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