America's potash is dug in Saskatchewan and priced in Asia.

A U.S. farm input with a Saskatchewan address

Potassium is one of the three nutrients a corn or soybean field cannot do without, and the United States does not mine much of it.

Canada's potash mining is concentrated in Saskatchewan. Nutrien lists six potash operations, all in the province: Allan, Cory, Lanigan, Patience Lake, Rocanville and Vanscoy [12]. The company says it supplied 27.5 million tonnes of fertilizer products of all kinds to customers in more than 50 countries in 2025 [11]. For a U.S. reader the practical point is that the Corn Belt's potash arrives by rail from Saskatchewan, and that the next largest supplier on the USGS import list is Russia, at 12% [1].

How a tonne of potash gets its price

Potash prices are discovered in two kinds of transaction rather than on an exchange, and a Saskatchewan producer sells into both.

The first is the annual contract. India and China buy on large fixed-price agreements negotiated once a year, and those settlements become the benchmark that every other buyer argues from. For 2026, Belarusian Potash Company settled with Indian Potash Limited in May at US$383 a tonne cost-and-freight for June through December, on roughly 650,000 tonnes with 180 days of credit, which Fertilizer Daily reported as US$35 above China's 2026 standard contract of US$348 a tonne signed in November 2025 [5]. ICL's own announcement of its Chinese supply agreements for 2026 used the same US$348 figure [6]. Those two numbers, printed months apart, are the floor and ceiling of the offshore conversation for the year.

The second is the spot market: Brazil, Southeast Asia and the United States itself buy on shorter commitments at prices that move with the season and with the contract benchmarks.

Nutrien's sales outside Canada and the United States go through Canpotex, the export marketing company it owns in equal shares with Mosaic [4]. In the first half of 2026 Latin America took 44% of Canpotex's sales, other Asian markets 26%, China 14% and India 3% [3]. The Indian contract therefore matters to Nutrien as a benchmark more than as a customer.

What the second quarter says about the cycle

The quarter was a potash quarter and a retail quarter. It was not a nitrogen quarter. Nitrogen adjusted EBITDA fell to US$263 million from US$566 million, on volumes of 2,253 thousand tonnes against 3,017 thousand, after the controlled shutdown of the Trinidad plant in October 2025 and the sale of the company's half of Profertil in Argentina in December; the company also notes the cost of the largest turnaround in its Carseland, Alberta plant's history [2][7]. Phosphate earned US$123 million [2].

That is management's reading, not ours. The potash segment's own numbers say the cycle is in a comfortable middle: the realized price is up on the year, volumes are at a record, and the cost line is low enough that the margin per tonne is wide at either benchmark. What the numbers do not say is where the next India contract settles.

The retail counter changes the shape of the cycle, not its direction

Nutrien is the only large potash producer that also owns the store where the farmer buys it. Its retail arm sells crop nutrients, crop protection and seed, about 1,700 of them proprietary products, through outlets in North America, Australia and South America, and it runs a financing book, Nutrien Financial, that booked US$145 million of revenue in the quarter [11][2].

The farm economy is where the August data cut both ways.

The bear case has three parts

The first is the benchmark. The 2026 India and China settlements are a floor only until the 2027 negotiation opens, and nothing in Nutrien's filings controls that number.

The second is the balance sheet and the nitrogen hole. Total debt was US$11,388 million at June 30, 2026, up from US$9,863 million at the end of 2025, with US$1,434 million of long-term debt due within a year and US$921 million of cash, while the company paid out US$848 million in dividends and buybacks in the first half [3][2][7]. With nitrogen earning less than half of what it did a year ago, the potash and retail segments are carrying more of that load.

The third is trade policy. Potash was added to the U.S. Geological Survey's critical minerals list in November 2025 [10], and Blakes, a Canadian law firm, reads the July 2026 Section 338 proclamations as excluding potash, energy, fish and critical minerals from the 50% tariff that applies to a wide range of other Canadian goods, CUSMA-qualifying or not [9]. That exclusion is why the North American price line in Nutrien's third-quarter release should look like the second quarter's. It is an annex to a proclamation, and the office that wrote it can amend it.

What would change our view

A 2027 India or China contract printed below the 2026 settlements would tell us the offshore cycle had turned, whatever the North American price did. A third-quarter North American potash price below the second quarter's US$295 a tonne [2] would tell us the border premium was eroding. A change to the Section 338 annexes that brought potash inside the tariff would change the thesis entirely. Until one of those happens, the Saskatchewan dependency is a fact about U.S. agriculture, and whether Nutrien's shares reflect it fairly is a separate question that the next two quarterly releases will answer better than this one.