. /.  WORLD TRADE  
ORGANIZATION  G/SPS/N/CAN/227 
17 November 2004 
 (04-4984) 
Committee on Sanitary a nd Phytosanitary Measures Original:   English/ 
 French 
 
 
 
NOTIFICATION  
 
1. Member to Agreement notifying:   CANADA  
If applicable, name of local government involved: 
2. Agency responsible:   Pest Management Regulatory Agency (PMRA), Department of 
Health 
3. Products covered (provide tariff item numbe r(s) as specified in national schedules 
deposited with the WTO; ICS numbers should be provided in addition, where applicable):  Mesotrione (ICS: 65.100.20, 67.040) 
4. Regions or countries likely to be affected, to the extent relevant or practicable:  Not 
stated. 
5. Title, language and number of pages of the notified document:   Proposed Amendment to 
the Food and Drug Regulations (1420 — Mesotr ione) (available in English and French; 
pages 3196-3199) 
6. Description of content:  Under authority of the Pest Control Products Act , the Pest 
Management Regulatory Agency (PMRA) of He alth Canada has approved an application 
for the registration of the pest control product (pesticide) mesotrione as a herbicide for the 
control of common ragweed, lamb's-quarters,  redroot pigweed, velvetleaf, and wild 
mustard in field corn and sweet corn as a pr e-emergent treatment, and in field corn as an 
early post-emergent treatment.  
This proposed regulatory amendment woul d establish a Maximum Residue Limit (MRL) 
under the Food and Drugs Act  for residues of mesotrione resulting from this use in field 
corn grain (the kernels of field corn) and sweet  corn kernel plus c ob with husks removed, 
in order to permit the sale of food contai ning these residues. This proposed amendment 
would also establish an MRL in eggs, in meat  and meat by-products  of cattle, goats, hogs, 
horses, poultry and sheep, and in milk to cove r residues in food derived from animals fed 
with crops treated with mesotrione.  
After the review of all available data, the PMRA has determined that an MRL for 
mesotrione of 0.01 parts per million (p.p.m.) in eggs, in field corn grain, in meat and meat 
by-products of cattle, goats, hogs, horses, poultr y and sheep, in milk, and in sweet corn 
kernel plus cob with husks removed would not  pose an unacceptable health risk to the 
public. 
7. Objective and rationale:  [ X ] food safety, [   ] animal health, [   ] plant protection, 
[   ] protect humans from animal/plant pest or disease,  [   ]  protect territory from other 
damage from pests G/SPS/N/CAN/227 
Page 2  
 
 8. International standard, guideline or recommendation:  
[   ] Codex Alimentarius Commission, [   ] World Organization for Animal Health 
(OIE), [   ] International Plant Protection Convention, [ X ] None  
If an international standard, guideline or recommendation exists, give the appropriate 
reference and briefly identify deviations:    
9. Relevant documents and language(s ) in which these are available:  Canada Gazette, 
Part I, 6 November 2004 (Avail able in English and French) 
10. Proposed date of adoption:   Normally within 5 to 8 mont hs of publication in the Canada 
Gazette, Part I. 
11. Proposed date of entry into force:   On the date the measure is adopted. 
12. Final date for comments:  20 January 2005 
Agency or authority designated to handle comments:  [   ] National notification 
authority, [ X ] National enquiry point, or  address, fax number and E-mail address (if 
available) of other body:    
13. Texts available from:  [   ] National notificati on authority, [ X ] National enquiry point, 
or address, fax number and E-mail address (if available) of other body: 
The electronic version of the regulat ory text can be downloaded at: 
http://canadagazette.gc.ca/partI/2004/20041106/pdf/g1-13845.pdf