UPDATE 1-Mexico sees end 2018 as best case for implementing new NAFTA

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MEXICO CITY, Aug 3 (Reuters) - Under a best-case scenario, a newly negotiated North American Free Trade Agreement (NAFTA) between Mexico, the United States and Canada would not be implemented before the end of next year or the start of 2019, Mexico's economy minister said on Thursday.

Among other issues, NAFTA talks would focus on how to provide more certainty in dispute resolutions, Economy Minister Ildefonso Guajardo said in a radio interview. The three countries are set to start talks on Aug. 16.

"According to the possible calendars of approval, the best of the scenarios that we could have ... would be the start of implementation almost at the end of 2018 or the start of 2019," Guajardo said.

Mexico has set out the goals of prioritizing free access for goods and services, greater labor market integration and a strengthening of energy security.

Last week, U.S. Agriculture Secretary Sonny Perdue said during a visit to Mexico that he hoped farm business with Mexico would not suffer due to President Donald Trump's drive to get a better deal for manufacturers. (Reporting by Veronica Gomez; Editing by James Dalgleish)