Itafos CEO David Delaney expects global phosphate fertilizer prices to remain elevated for years, citing tight sulfur supplies and record sulfur costs as structural barriers that will discourage construction of new phosphate plants.

The chief executive of the domestic phosphate producer pointed to sulfur — a key input for phosphate manufacturing — as the binding constraint on industry expansion. "They don't really know where sulfur is going to...," Delaney said, speaking about would-be entrants to the phosphate market.

Sulfur is recovered largely as a byproduct of oil and gas refining, particularly from desulfurization of crude oils and natural gas. When sulfur prices reach record levels and supplies tighten, the economics of new phosphate capacity deteriorate. Each new greenfield phosphate project must clear a higher hurdle rate, and financing becomes harder to secure.

For U.S. growers, the linkage runs directly to input budgets. Phosphate — applied as DAP and MAP — typically ranks as the second-largest fertilizer expense on corn and soybean operations, behind nitrogen. Sustained elevated phosphate prices pressure crop margins at a moment when commodity revenue is already constrained.

What sulfur's role means for phosphate economics

Phosphate rock is converted into crop nutrients through acidulation, a process that consumes large volumes of sulfuric acid. When sulfur prices spike, producers absorb the cost — compressing margins — or pass it through to wholesale and retail channels, where it ultimately shows up at the farm gate. The mechanism is straightforward; the duration is the open question.

Delaney's framing matters because it tells buyers that the current price plateau is structural rather than transient. A market expecting supply to loosen would prompt buyers to wait. A market expecting constraint to persist rewards early commitments.

How long could the constraint last?

The sulfur market is tied to global energy flows. Refinery configuration, crude slate quality, and natural gas processing all determine how much recovered sulfur reaches fertilizer producers. Until new refining capacity comes online or until alternative sulfur sources scale, the supply picture remains tight.

The domestic phosphate industry has consolidated over the past two decades, and existing mines face declining ore quality at the margins. With few greenfield projects moving through permitting, the supply curve is unlikely to shift right in the near term.

What buyers should watch

Retailers and cooperative buying groups face a planning question: treat current phosphate prices as a plateau or as a floor. If Delaney's assessment holds, the answer is closer to floor. That argues for locking in fall and spring volumes earlier, managing soil-test phosphorus levels more carefully, and drawing down agronomic build-up where crops permit.

Growers, meanwhile, may need to recalibrate their fertility programs around placement efficiency and variable-rate application rather than across-the-board rate cuts. The cheapest pound of phosphate is the one already in the soil.

Looking ahead, watch sulfur pricing data and any announcements of new refining capacity as the leading indicators for whether phosphate affordability improves through the next planning cycle.