Canada has requested a formal meeting with China before the World Trade Organization to resolve a Chinese ban on Canadian canola shipments.

International Trade Minister Jim Carr announced Friday that Canada is seeking a bilateral consultation at the WTO because the two sides have been unable to resolve the issue.

"Our government is committed to rules-based international trade and has continued to advocate on behalf of Canadian farming families since China raised concerns over Canadian canola earlier this year," said Carr in a statement.

"In order to make progress, Canada is seeking bilateral consultations at the WTO, which is the usual next step when direct engagement does not lead to resolution."

Carr added that the federal government is standing by Canada's "robust food inspection system" and will continue to keep farmers and producers informed of progress at the WTO.

China's decision to ban canola shipments is part of disintegrating relations with Canada following the RCMP's December arrest of Huawei executive Meng Wanzhou in Vancouver on a U.S. extradition request.

Nine days later, China imprisoned two Canadian men, ex-diplomat Michael Kovrig and entrepreneur Michael Spavor, on suspicion of spying in what is widely viewed as an act of retaliation for Meng's arrest.

Prime Minister Justin Trudeau said earlier this week that China uses arbitrary detentions as a tool to achieve its international and domestic political goals.

That comment sparked the ire of a spokesman for China's foreign ministry on Friday, who reiterated Beijing's position that Meng's arrest had no basis in law and that Canada was acting as an American pawn.

Industry welcomes WTO move

China blocked imports of Canadian canola seeds, alleging inspectors found pests in some shipments. The federal government says it has tried unsuccessfully to send a delegation of Canadian experts to China to examine the evidence.

The government has supplied an additional $150 million in insurance to canola farmers.

Saskatchewan's Trade and Export Development Minister Jeremy Harrison said Friday the federal move was months overdue.

"We'd been calling for the national government to initiate the WTO challenge from virtually day 1 of the Chinese decision to exclude canola into their market," said Harrison.

"If they had initiated it in April, when I think was when we first asked them to do that, that would have been six months further along in this process than we are right now."

The Canola Council of Canada welcomed the government's decision because "the scientific basis for China's actions remains unclear," Jim Everson, the council president, said in a statement.

"China has an obligation to explain the scientific basis for its actions as part of its commitments to World Trade Organization rules."