Water Soluble Fertilizer Prices Rose in September
Rising raw material costs and production cuts drove price increases for essential crop nutrients.
Updated on Oct. 14, 2026 in Agriculture
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In September 2026, the United States market for water soluble fertilizer saw significant price hikes. Mono Ammonium Phosphate costs increased by 14.1 percent as supply chain constraints hampered domestic production.
Why it matters
Geopolitical export restrictions in Russia and China have tightened global sulfur availability, creating bottlenecks for producers. These raw material shortages have forced manufacturers like Mosaic to cut operating rates, directly impacting agricultural input costs.
Mono Ammonium Phosphate prices rose 14.1 percent in September 2026. Production requires four tonnes of sulfur for every ten tonnes of finished fertilizer, with sulfur prices in Tampa remaining above $1,000 per tonne since May 2026.
The players
Mosaic
Mosaic is a major producer of crop nutrients that recently reduced operating rates at its production facilities in Florida and Louisiana.
The details
Mosaic reduced operating rates at its facilities in Florida and Louisiana, limiting the volume of fertilizer available for domestic use. The industry now faces sustained cost pressure as reliance on sulfur, a critical raw material currently trading above $1,100 per tonne in Tampa, continues to climb.
Timeline
May 2026: Tampa sulfur prices moved above $1,000 per tonne.
August 2026: This month served as the baseline for the price comparison.
September 2026: Mono Ammonium Phosphate prices rose 14.1 percent.
Fall 2026: Fertilizer prices are expected to remain firm through this application season.
Market Landscape
This price spike reflects long-term vulnerabilities in agricultural supply chains dependent on imported raw materials. It highlights the industry shift toward consolidated production as companies like Mosaic adjust output to navigate rising global commodity prices.
Farmers across the country should prepare for higher input costs during the upcoming fall application season. These price hikes are expected to influence operational budgets as growers manage the rising expense of essential crop nutrients.
The takeaway
Growers may consider expanding precision fertigation and foliar nutrition techniques to optimize nutrient efficiency during periods of high market pricing. Efficient application strategies can help mitigate the financial impact of sustained spikes in fertilizer costs.
Further reading
Learn more about domestic supply dynamics by visiting the United States Agriculture section.
Live Poll
Do you expect rising fertilizer costs to increase your household food expenses soon?
