Proposed Maximum Residue Limit PMRL2018-42, Picoxystrobin
Notice to the reader:
This consultation is now closed.
Pest Management Regulatory Agency
31 August 2018
ISSN: 1925-0843 (PDF version)
Catalogue number: H113-24/2018-42E-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 potatoes, sunflowers, bulb vegetables, sugar beets, almonds, and peanuts to the product label of DuPont Acapela Fungicide, containing technical grade picoxystrobin, is acceptable. The specific uses approved in Canada are detailed on the label of DuPont Acapela Fungicide, Pest Control Products Act Registration Number 30470.
The evaluation of this picoxystrobin 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 is made from it.
Consultation on the proposed MRLs for picoxystrobin is being conducted via this document (see Next Steps). A summary of the field trial data used to support the proposed MRLs 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 MRLs, to be added to the MRLs already established for picoxystrobin, are as follows:
|Common Name||Residue Definition||MRL (ppm)Footnote 1||Food Commodity|
|Picoxystrobin||methyl (αE)-α-(methoxymethylene)-2-[[[6-(trifluoromethyl)-2-pyridinyl]oxy]methyl] benzeneacetate||15||Green onions (crop subgroup 3-07B)|
|3||Sunflowers (revised) (crop subgroup 20B)|
|0.8||Bulb onions (crop subgroup 3-07A)|
|0.6||Sugar beet roots|
Tuberous and corm vegetables
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 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
Currently, there are no American tolerances for picoxystrobin on the petitioned commodities listed in the Electronic Code of Federal Regulations, 40 CFR Part 180, by pesticide, nor are there any Codex MRLsFootnote 1 listed for picoxystrobin in or on the petitioned commodities on the Codex Alimentarius Pesticide Index webpage, by pesticide or commodity.
The PMRA invites the public to submit written comments on the proposed MRLs for picoxystrobin 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.
Summary of Field Trial Data Used to Support the Proposed Maximum Residue Limits
Residue data for picoxystrobin in various crops were submitted to support the domestic use of DuPont Acapela Fungicide in almond nuts, peanuts, sugar beet roots, tuberous and corm vegetables (crop subgroup 1C), bulb onions (crop subgroup 3-07A), green onions (crop subgroup 3-07B) and sunflowers (revised crop subgroup 20B). In addition, processing studies in treated potatoes and sugar beet roots were reviewed to determine the potential for concentration of residues of picoxystrobin into processed commodities. The canola processing study was also reassessed in the framework of this petition to determine the potential for concentration into sunflower oil.
Maximum Residue Limits
The recommendation for maximum residue limits (MRLs) for picoxystrobin 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 MRLs.
|Commodity||Application Method/ Total Application Rate (g a.i./ha)Footnote 1||Preharvest Interval (days)||Lowest Average Field Trial Residues (ppm)||Highest Average Field Trial Residues (ppm)||Experimental Processing Factor|
|Almond nuts||Foliar/998-1008||7||< 0.01||0.018||Not required|
|Dry bulb onion||Foliar/988-1012||0||0.014||0.50||Not required|
|Green onion||Foliar/983-1015||0||2.4||8.0||Not required|
|Peanuts||Foliar/988-1014||7-8||< 0.01||0.05||Not required|
|Potatoes||Foliar/983-1023||3||< 0.01||0.037||Chips: < 0.2×
Flakes: < 0.2×
|Sugar beet roots||Foliar/982-1029||3||0.013||0.43||Refined sugar: 0.1×|
|Sunflower seeds||Foliar/993-1019||6-9||0.015||1.5||Canola oil: 0.1×|
Following the review of all available data, MRLs as proposed in Table 1 are recommended to cover residues of picoxystrobin. Residues of picoxystrobin in these crop commodities at the proposed MRLs will not pose an unacceptable risk to any segment of the population, including infants, children, adults and seniors.
- Footnote 1
The Codex Alimentarius Commission is an international organization under the auspices of the United Nations that develops international food standards, including MRLs.
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