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MOSCOW, July 29 (Reuters) - Russia's Uralkali, the world's largest potash producer, said it may increase the price for a new 2015 supply contract with China by 10 percent, pressing efforts to restore prices to levels seen before last year's slump.
Global potash prices fell sharply after Uralkali quit a powerful trading alliance with Belarus in July 2013, sparking competition among producers who had previously maintained price discipline.
"Traditionally, China's market, which is set to consume 12 million tonnes of potash this year, is a growth driver," Oleg Petrov, Uralkali's head of sales, told Reuters. "The estimated price may exceed the current contract price by 10 percent."
China is the world's largest potash consumer whose contracts are seen as a benchmark by the bulk of market participants. Currently, Uralkali has a contract to supply China with 700,000 tonnes of the soil nutrient at $305 per tonne on a cost-and-freight basis.
Negotiations over the new contract are expected to start this autumn and to end by January 2015, Petrov said in emailed answers to Reuters questions. He declined to comment on the volume of future supplies.
A 10 percent increase in the 2015 contract price would still leave prices far behind the $400-per-tonne level, at which Uralkali had been supplying potash to China in the first half of 2013, before the collapse of its trading alliance.
However, a new Chinese contract should stimulate growth in consumption and global potash deliveries are expected to reach 60 million tonnes in 2015, up 2 million tonnes from 2014, Uralkali said.
Its withdrawal from the Belarus trading venture, which controlled 40 percent of the $20 billion global market for the fertiliser, left a group called Canpotex - owned by Potash Corp of Saskatchewan, Mosaic Co and Agrium Inc - as the world's top export group.
Potash Corp said last week it had a strong potash order book from U.S. buyers for the second half, and Canpotex was fully committed through the third quarter with China driving some of the renewed potash demand.
(Reporting by Polina Devitt; Editing by Elizabeth Piper and Dale Hudson)