US and Canadian WSF Markets Weaken on Lower Demand and Improved Supply

US and Canadian water soluble fertilizer prices recorded sharp monthly declines in August 2026, with MAP FOB Texas falling 10.34% and MAP CFR Vancouver declining 9.7% compared to July — corrections that reflected the convergence of easing geopolitical supply premiums, demand destruction from elevated conflict-period prices, and a landmark structural development in North American phosphate supply infrastructure.

The primary driver behind the sharp monthly water soluble fertilizer - MAP price decline was the progressive unwinding of the geopolitical risk premium that had elevated North American water soluble fertilizer prices through the conflict period. The partial normalization of Strait of Hormuz navigation following US-Iran diplomatic engagement reduced the supply scarcity premium embedded in water soluble fertilizer FOB Texas assessments, with improved global phosphate trade flows compressing the Atlantic Basin price premium that domestic US water soluble fertilizer producers had sustained through Q2 2026. US imports of ammonium phosphate fertilizers fell 12.92% year over year in H1 2026, while exports surged 49.34%, demonstrating how conflict-period price dynamics had redirected US phosphate flows toward export markets — and how the normalization of those flows simultaneously eased domestic water soluble fertilizer price pressure through August.

The demand-side narrative told an equally important story for water soluble fertilizer . Phosphate application in North America was approximately 30% below a typical year, according to Mosaic, as farmers responded to the conflict-period price peaks by deferring applications — demand destruction that Mosaic CEO acknowledged created a difficult volume environment even as water soluble fertilizer prices remained elevated relative to year-ago levels. Nutrien missed profit estimates as lower volumes blunted the impact of higher fertilizer prices, confirming that the demand destruction was broad-based and measurable across the Canadian fertilizer distribution network as well.

Against this backdrop, agricultural cooperative CHS and Morocco-based OCP North America announced on August 26 a joint venture to build the first new phosphate fertilizer plant in the United States since 1984. The facility will be built at Cornerstone Energy Park in Waggaman, Louisiana, with an investment of up to USD 450 million and planned annual capacity of more than one million metric tons of phosphate-based fertilizer. Construction is expected to take up to 24 months. CHS President and CEO Jay Debertin called the project an exciting moment for American agriculture, while Kevin Kimm of OCP North America described it as a milestone in the company's commitment to serving American agriculture.

In Canada, water-soluble fertilizer prices at CFR Vancouver fell 9.7%, closely following the decline in the U.S. FOB Texas market. This reflects the strong connection between the Canadian and U.S. phosphate fertilizer markets. Fertilizer Canada continued to support the Mercosur trade deal, which could help diversify fertilizer supply sources. However, ongoing trade tensions with the United States created uncertainty for farmers in the Prairie provinces ahead of the autumn pre-plant season. Overall, prices are easing in the short term, while new supply investments are expected to improve long-term market security.