By Rod Nickel

WINNIPEG, Manitoba (Reuters) -BHP has signed non-binding sales agreements for all potash production from both phases of the Canadian mine it is building, and will look to convert those into firm offtakes within 12-18 months, a senior executive told Reuters.

BHP Chief Commercial Officer Ragnar Udd also said the company is not interested in acquiring the idled Cobre Panama copper mine from First Quantum Minerals.

Australia-based BHP's entry into selling potash is expected to shake up the global fertilizer market, which producers in Canada, Belarus and Russia dominate. Fertilizer is a key input for farmers to boost yields of crops such as corn.

BHP expects to begin production at Jansen, Saskatchewan in late 2026, ramping up to 4.35 million metric tons annually. A second phase approved by BHP will boost yearly output to 8.5 million tons, expanding global supply by roughly 10%.

BHP plans to sell potash to distributors, rather than directly to companies that re-sell the fertilizer to farmers, Udd said, declining to name the companies.

BHP has not previously disclosed the sales agreements or how it will market its potash.

Selling to distributors reflects the fact that BHP does not own a potash distribution network and allows it to focus on what it is best at – production, Udd said in an interview.

"A lot of the feedback we've had from customers is how thrilled they are to be seeing a new reliable, stable form of supply coming in from an industry player that's well-known," Udd said.

BHP will turn tentative sales into binding contracts – typically lasting one year – as production comes online, with the first likely in late 2025 or early 2026, Udd said.

BHP will provide stiff competition to Nutrien, Mosaic, Belaruskali and Uralkali. The company's entry may initially be "quite destructive" to prices, said Humphrey Knight, principal analyst of potash and phosphates at consultancy CRU.

Selling to distributors runs counter to how BHP usually operates, controlling much of the supply chain itself, Knight said.

The U.S. is the prime market for Canadian potash due to its proximity, but it has been difficult to penetrate for another producer, Germany's K+S AG, Knight said.

Udd said he would not give specifics about BHP's U.S. plan but said it is "quite comfortable" with its ability to compete there.

BHP, best-known for mining iron ore, copper, nickel and metallurgical coal, is not interested in acquiring First Quantum's Cobre Panama, one of the world's largest open-pit copper mines, which was forced to shut down in December after Panama's top court ruled that its contract was unconstitutional.

"Honestly, while we're always looking for opportunities, I think that's a situation best left for Panama and others," Udd said.

(Reporting by Rod Nickel in Winnipeg; additional reporting by Divya Rajagopal in Toronto, Editing by Franklin Paul)