Fertilizer Policy In-Focus: Mosaic Curtails Phosphate Output as Sulfur Costs Surge

Corey Rosenbusch, President & CEO of The Fertilizer Institute, discusses fertilizer markets transparency efforts and the steps to ensure long-term stability for farmers and the ag economy.

Farmer on a tractor with a sprayer makes fertilizer for young vegetable_Photo by Dusan Kostic via AdobeStock_244021725.jpg

Photo by Dusan Kostic via Adobe Stock

LUBBOCK, TEXAS (RFD NEWS) — Farmers could face continued pressure on phosphate fertilizer prices as Mosaic reviews its production plan and begins partial curtailments in the U.S. and Brazil. The company says sulfur prices recently hit record levels, tightening margins for phosphate production.

Mosaic reported a first-quarter net loss of $258 million, while adjusted EBITDA totaled $416 million. Phosphate sales volumes reached 1.9 million tonnes, but the segment posted a $48 million operating loss as raw material costs rose by $280 million.

The pressure is not evenly distributed across the whole company. Potash performed better, with operating earnings of $177 million, as higher prices helped offset higher production costs. Mosaic still expects about 9 million tonnes of potash production in 2026.

Farm-Level Takeaway: Phosphate fertilizer costs may stay firm if sulfur shortages continue to limit production and squeeze margins.
Tony St. James, RFD News Markets Specialist

Brazil remains another weak spot. Mosaic Fertilizantes posted a $422 million operating loss after charges tied to idling Araxa and Patrocinio, while credit constraints weighed on distribution margins.

The company now expects 2026 capital spending of $1.25 billion and is deferring less-urgent projects. Mosaic says phosphate demand remains supported, but raw material availability will shape output.

Industry leaders are calling for greater stability and transparency in fertilizer markets as concerns over supply constraints and input costs continue to ripple through the agriculture sector. The discussion follows market challenges stemming from the war in Iran, as highlighted in recent testimony before the Senate Agriculture Committee.

Corey Rosenbusch, President and CEO of The Fertilizer Institute, joined us on Thursday’s Market Day Report to provide an update on current market conditions and the key issues being raised by producers and industry stakeholders.

In his interview with RFD News, Rosenbusch said the fertilizer industry is hearing ongoing concerns about price volatility and supply uncertainty, while emphasizing that the private sector is increasingly supportive of efforts to help farmers better understand the factors driving nutrient costs.

He also addressed his remarks during Tuesday’s hearing, expanding on the need for improved market insight and communication across the supply chain.

Rosenbusch agrees with lawmakers and USDA officials on the importance of strengthening domestic fertilizer production, noting the need to develop policies that support long-term supply stability rather than short-term fixes. He also outlined policy approaches that The Fertilizer Institute believes could improve market predictability and highlighted potential risks to agriculture if supply challenges are not addressed.

Related Stories
Dr. Gary Schnitkey from the University of Illinois discusses farmers’ sentiment toward industry consolidation, especially in the fertilizer sector, where costs remain historically high.
Weak cold chain performance can lead to slower movement, higher costs, and greater product loss after harvest or processing.
To qualify, land must be in the U.S., used substantially for farming in the last 10 years, and restricted from non-farm use for at least 10 years after the sale.

Tony St. James joined the RFD-TV talent team in August 2024, bringing a wealth of experience and a fresh perspective to RFD-TV and Rural Radio Channel 147 Sirius XM. In addition to his role as Market Specialist (collaborating with Scott “The Cow Guy” Shellady to provide radio and TV audiences with the latest updates on ag commodity markets), he hosts “Rural America Live” and serves as talent for trade shows.

LATEST STORIES BY THIS AUTHOR:

K-State economists say big swings in cattle futures can complicate hedging, margin calls, and timing of sales.
USDA says total grain inspected for export reached 2.81 million metric tons for the week ending June 11.
Tennessee’s Agriculture specialty license plate, known as the Ag Tag, is celebrating its 30th anniversary, and state agriculture leaders are giving the public a chance to help shape its next chapter.
Experts note that economic growth, fuel demand, and energy diversification are opening new opportunities for U.S. grain and ethanol exports in Southeast Asia.
The Potter Valley Project has provided irrigation water and hydroelectric power for over 100 years in Northern California, serving agriculture and municipal users.
The USDA’s new cotton initiative comes as policymakers continue to focus on stabilizing farm income across major row crops while balancing export exposure with domestic supply chain resilience.