Five of the eight retail fertilizers tracked by DTN Progressive Farmer posted declines in the opening week of August, with UAN32 solution posting the steepest drop. The weekly retail fertilizer index showed mixed pricing action across the nitrogen, phosphate and potash complexes heading into the fall application procurement window.

DTN's retail fertilizer survey tracks anhydrous ammonia, UAN28, UAN32, urea, diammonium phosphate (DAP), monoammonium phosphate (MAP), potash and ammonium sulfate. The publication did not include dollar-per-ton figures, percentage moves or four-week moving averages in the headline materials reviewed by Agribusiness Wire. The full per-ton values, regional basis differentials and survey methodology remain accessible only through DTN's subscription service.

UAN32 is the highest-nitrogen-content liquid nitrogen product commonly applied to U.S. corn and winter wheat acres. UAN32 typically trades at a premium to UAN28 because of its higher nitrogen concentration, and retailers, cooperatives and growers track the UAN28-UAN32 spread as a signal of nitrogen supply tightness. Retailers watch UAN32 pricing closely because it sets the basis for fall top-dress and side-dress contracts across Iowa, Illinois, Indiana, Nebraska and the broader Corn Belt. A sustained UAN32 decline typically signals softer nitrogen demand, often tied to compressed corn acreage expectations, or improved domestic supply following the spring fill season.

What does the early-August pattern signal for fall nitrogen?

Retail fertilizer prices typically soften through August as summer fill demand winds down and dealers clear inventory ahead of fall anhydrous application. The pattern carries weight because fall nitrogen decisions lock in input costs for the following corn crop. Growers who prepaid at summer highs — when natural gas-driven ammonia costs peaked in some regions — will watch for confirmation that early-August weakness extends through the Labor Day procurement cycle.

How does DTN build its weekly index?

• Coverage: surveyed ag retailers across the Midwest, Plains and Delta regions
• Comparisons: week-over-week and four-week moving averages
• Products: eight major nutrients used in corn, soybean and wheat rotations
• Cadence: weekly publication through the fertilizer procurement calendar

What should cooperative managers and input buyers do now?

Cooperative managers and input buyers face the immediate question of whether to lock fall nitrogen at current DTN-quoted levels or wait for further weakness. The pricing action matters because each dollar-per-ton move on UAN32 translates directly into per-acre cost shifts on corn budgets. Agribusiness Wire will track the DTN index weekly and report any sustained moves that shift the fall nitrogen cost basis for Corn Belt growers.

What is the forward catalyst to watch?

The next DTN retail fertilizer report will clarify whether the early-August softness extends through mid-August procurement or reverses as fall ammonia demand rebuilds. Growers, retailers and cooperatives will look for confirmation of the downtrend before committing to remaining fall nitrogen tons.