Proposed Maximum Residue Limit PMRL2016-27, Pyraclostrobin
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Pest Management Regulatory Agency
27 May 2016
ISSN: 1925-0843 (PDF version)
Catalogue number: H113-24/2016-27E-PDF (PDF version)
Under the authority of the Pest Control Products Act, Health Canada’s Pest Management Regulatory Agency (PMRA) is proposing to establish maximum residue limit (MRLs) for pyraclostrobin on various commodities to permit the import and sale of foods containing such residues.
Pyraclostrobin is a fungicide currently registered in Canada for use on various commodities.
The PMRA must determine the quantity of residues that are likely to remain in or on the imported food commodities when pyraclostrobin is used according to label directions in the exporting country, and that such residues will not be a concern to human health. This quantity is then legally established as an MRL on the corresponding imported commodity. 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 pyraclostrobin 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 MRLs can be found in Appendix I.
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 Canada’s Notification Authority and Enquiry Point.
The proposed MRLs, to replace or be added to the MRLs already established for cyantraniliprole, are as follows.
|Common Name||Residue Definition||MRL
(ppm)Table 1 footnote 1
Methyl N-[2-[[[1-(4-chlorophenyl)-1H-pyrazol-3-yl]oxy]methyl]phenyl]-N-methoxycarbamate including the metabolite [2-[[[1-(4-chlorophenyl)-1H-pyrazol-3-yl]oxy]methyl]
|200||Dried herbs (Crop Group 19A)|
|40||Crop Group 2 (Leaves of root and tuber vegetables, except garden beet tops and radish topsTable 1 footnote2Table 1 footnote 3),fresh herbs (crop group 19A), dill seeds, fresh chive leaves|
|3.0||American persimmons, globe artichokes|
|2.5||Crop group 12-09 (stone fruits)Table 1 footnote4|
|1.4||BarleyTable 1 footnote 5|
|0.6||Tropical and subtropical fruits – medium to large fruits, smooth, inedible peel, except bananaTable 1 footnote 6 (Crop subgroup 24B)Table 1 footnote 7, mamey sapotes, sapodillas, sorghum|
|0.45||Undelinted cotton seeds|
|0.3||Green coffee beans|
Table 1 footnotes
MRLs are proposed for each commodity included in the listed crop groupings in accordance with the Residue Chemistry Crop Groups webpage in the Pesticides and Pest Management section of Health Canada’s 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 MRLs proposed for pyraclostrobin in Canada are the same as corresponding American tolerances, but differ from Codex MRLsTable A1 footnote 11. Table 2 compares the MRLs proposed for pyraclostrobin in Canada with corresponding American tolerances and Codex MRLs. American tolerances are listed inthe Electronic Code of Federal Regulations, 40 CFR Part 180, by pesticide. A listing of established Codex MRLs is available on the Codex Alimentarius Pesticide Residues in Food website, by pesticide or commodity.
|Commodity||Canadian MRL (ppm)||American Tolerance (ppm)||Codex MRL (ppm)|
|Crop Subgroup 19A (Dried Herbs)||200||None||None|
|Crop Subgroup 19A (Fresh Herbs)||40||40||None|
|Fresh chive leaves||40||40||None|
|Crop Group 2
(Leaves of Root and Tuber Vegetables)
|40||16||20 (Radish leaves, including radish tops)|
|Crop Group 12-09 (Stone Fruits)||2.5||2.5||3.0 (Cherries)
0.3 (Nectarine, peach)
0.8 (Plums, including prunes)
|Crop Subgroup 24B (Tropical and Subtropical Fruits – medium to large fruits, smooth, inedible peel, except banana)||0.6||0.6 (Avocado, canistel, mango, papaya, black sapote, and star apple)||0.05 (Mango)
|Crop Group 20 (Oilseeds)||0.45||0.45||0.4 (Oilseed, except peanut)|
The PMRA invites the public to submit written comments on the proposed MRLs for pyraclostrobin 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 pyraclostrobin in various crops were submitted to support the maximum residue limits on imported globe artichokes, green coffee beans, cotton seeds, sugarcane, persimmon, sorghum grain, Crop Group 2 (Leaves or Root and Tuber Vegetables – except sugar beet), Crop Subgroup 19A (Herbs – fresh and dried), dill (fresh leaves and seeds), tropical fruits (avocado, black sapote, canistel, mamey sapote, sapodilla and star apple), and to revise the maximum residue limits on barley grain, mango, papaya and Crop Group 12-09 (Stone Fruits).
Previously reviewed residue data from field trials conducted in/on Crop Group 2 (Leaves or Root and Tuber Vegetables), Crop Group 12-09 (Stone Fruits), Crop Group 20 (Oilseeds), banana and mango were reassessed in the framework of this petition. In addition, processing studies on treated cotton seed, coffee green beans and sugarcane were reviewed and processing studies on treated plums and wheat grain were also reassessed to determine the potential for concentration of residues of pyraclostrobin into processed commodities.
Maximum Residue Limits
The recommendation for maximum residue limits (MRLs) for pyraclostrobin 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 for imported crops.
|Commodity||Application Method/ Total Application Rate (g ai/ha) Table A1 footnote 1||Preharvest Interval (days)||Lowest Avergare Field Trial Residues (ppm)Table A1 footnote 2a||Highest Average Field Trial Residues (ppm)Table A1 footnote 2b||Experimental Processing Factor|
|Turnip greens||Foliar spray / 896||0||3.49||12.52||Not required|
|Radish tops||Foliar spray/ 661-694||0||7.67||15.37||Not required|
|Sweet cherry||Foliar spray / 660-672||0||<0.27||<0.44||Not required|
|Foliar spray / 665||0||<0.05||1.61|
|Tart cherry||Foliar spray / 660-672||0||0.46||0.66||Not required|
|Foliar spray / 665||0||0.59||1.17|
|Peach||Foliar spray / 660-672||0||<0.09||<0.33||Not required|
|Foliar spray / 650||0||<0.25||<0.63|
|Foliar spray / 665||0||<0.33||1.65|
|Plum||Foliar spray / 660-672||0||<0.04||<0.21||Dried prune: 1.3x|
|Foliar spray / 650||0||<0.11||0.45|
|Foliar spray / 665||0||<0.04||0.4|
|Barley, grain||Foliar spray / 328-339||14-15||0.54||0.93||Based on wheat grain:
|Sorghum, grain||Foliar spray / 217-228||46-122||<0.04||0.41||Not required|
|Basil, fresh leaves||Foliar spray / 896-930||0||7.86||16.08||Not required|
|Basil, dried leaves||Foliar spray / 896-930||0||40.11||80.57||Not required|
|Chive, fresh leaves||Foliar spray / 907-930||0||0.93||7.83||Not required|
|Dill, seeds||Foliar spray / 896-930||0||3.86||21.39||Not required|
|Cotton, undelinted seeds||Foliar spray / 896||29-33||<0.04||0.15||Cotton seed oil: 0.3x|
|Avocado||Foliar spray / 819-870||0||0.08||0.39||Not required|
|Banana||Foliar spray / 743-902||0||<0.04||<0.04||Not required|
|Mango||Foliar spray / 448||0||<0.10||<0.10||Not required|
|Persimmon||Foliar spray / 632-641||0||0.11||1.23||Not required|
|Artichoke (Globe), flower head||Foliar spray / 615-630||0||0.64||1.1||Not required|
|Coffee, green beans||Foliar spray / 350-400||45||<0.04||0.14||Roasted coffee bean: 0.5x
Instant coffee: 0.5x
|Sugarcane||Foliar spray / 875-909||13-14||<0.04||0.12||Blackstrap molasses: 0.3x
Refined sugar: 0.2x
Following the review of all available data, MRLs as proposed in Table 1 are recommended to cover residues of cyantraniliprole. Residues of pyraclostrobin in these crop/livestock commodities at the proposed MRLs will not pose an unacceptable risk to any segment of the population, including infants, children, adults and seniors.
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