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
National Cotton Council’s Gary Adams joins us to discuss the USDA’s Great American Cotton Plan, crop conditions, prices, and efforts to boost domestic demand.
The agreement establishes a new system to monitor water deliveries to Texas and sets limits on how far Mexico can fall behind on its treaty obligations.
China’s expanding farm assistance in Cuba bears watching as food trade becomes part of regional influence.
To preserve their property rights, farmers and ranchers must understand the procedural tactics of federal enforcement and take proactive steps to document the visual realities of their land.

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:

Volunteer firefighters describe devastating scenes as crews continue battling multiple fires across the region.
USMEF President and CEO Dan Halstrom joins us to discuss China’s renewed access for U.S. beef facilities, the outlook for exports, and key conversations taking place at this week’s Spring Conference.
Operating debt remains manageable in many areas, but rising non-accrual loans show why careful cash-flow management matters in 2026.
Strong rail and ocean demand support grain movement, but weak barge traffic and high diesel costs keep freight pressure elevated.
The challenge is adoption.
The work could apply to ready-to-eat meals and delicate foods such as freeze-dried berries.