OMAHA (DTN) -- Retail fertilizer prices continue to be mixed, according to locations tracked by DTN for the second week of September 2025.

Four fertilizers were higher compared to last month while the other four were slightly lower. For the second week in a row, one fertilizer had a sizeable move. DTN designates a significant move as anything 5% or more.

DAP was 5% more expensive compared to last month. The phosphorous fertilizer has an average price of $862/ton.

Three other fertilizers had slightly higher prices. MAP had an average price of $917/ton, potash $488/ton and anhydrous $768/ton.

Four fertilizers were slightly lower looking back to the prior month. Urea had an average price of $631/ton, 10-34-0 $667/ton, UAN28 $414/ton and UAN32 $482/ton.

On a price per pound of nitrogen basis, the average urea price was $0.69/lb.N, anhydrous $0.47/lb.N, UAN28 $0.74/lb.N and UAN32 $0.75/lb.N.

Three U.S. senators are reintroducing legislation to examine why the cost of fertilizer is high, according to a press release. The Fertilizer Research Act would require USDA to conduct a survey on competition and trends in the fertilizer market and the impact on prices.

Sens. Chuck Grassley, R-Iowa; Tammy Baldwin, D-Wis.; and Joni Ernst, R-Iowa, are the senators who are reintroducing the legislation. Sen. Raphael Warnock, D-Ga., is also a co-sponsor of the legislation.

Within one year of the bill's passage, the Secretary of Agriculture, in consultation with the Economic Research Service, would be required to issue a report on USDA's website regarding the U.S. fertilizer industry.

"Fertilizer is one of the ag industry's biggest inputs, and family farmers across the nation are severely hurting right now due to its high cost," Grassley said.

All eight fertilizers are now higher in price compared to one year earlier.

The last holdout, potash, is now 5% higher. 10-34-0 is 5% more expensive, both 10-34-0 and anhydrous are 12% higher, MAP is 14% more expensive, DAP is 17% higher, UAN28 is 26% more expensive, urea is 29% higher and UAN32 is 37% more expensive looking back to last year.

DTN gathers fertilizer price bids from agriculture retailers each week to compile the DTN Fertilizer Index. DTN first began reporting data in November 2008.

In addition to national averages, MyDTN subscribers can access the full DTN Fertilizer Index, which includes state averages, here: https://www.mydtn.com/….

The global supply of nitrogen, specifically UAN, is facing some major issues, according to one fertilizer analyst. You can read about it here: https://www.dtnpf.com/….

Russ Quinn can be reached at Russ.Quinn@dtn.com

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