South Dakota is a major corn, soybean, and winter wheat state with the James River Valley and eastern South Dakota black soils averaging 155–175 bu/acre corn. DAP (Diammonium Phosphate) is currently priced at $717–$829/ton in South Dakota markets as of spring 2026, reflecting Great Plains supply chain conditions.
| Benchmark | Price | vs. 2025 |
|---|---|---|
| NOLA barge (national reference) | $640–$740/ton | +15–25% |
| South Dakota co-op / distributor | $717–$829/ton | +27–37% |
| South Dakota retail delivered | $736–$851/ton | +29–39% |
Hold aggressive pre-buying until August China restriction decision. Spot may correct 10–15% if restrictions lift.
South Dakota receives fertilizer via Missouri River barge terminals at Sioux City and by rail; western South Dakota pays premiums of 12–18% over NOLA.
| Driver | Impact |
|---|---|
| China phosphate export ban | China restricted phosphate exports through August 2026, removing ~30% of global trade volume — the single largest price driver. |
| Morocco and Saudi supply | Alternative suppliers (OCP, SABIC) run at capacity but cannot fully offset China volumes. |
| Ammonia input costs | DAP production requires ammonia; elevated natural gas costs raise the cost floor. |
| Spring demand surge | Concentrated spring application demand amplifies price spikes during March–May. |
South Dakota farmers typically source DAP (Diammonium Phosphate) through regional co-operatives, independent retailers, and direct distributor contracts. The most effective strategy in Great Plains markets is to compare co-op pre-pay pricing versus spot retail, as pre-pay discounts of 5–12% are standard for early fall bookings.
As of spring 2026, DAP (Diammonium Phosphate) in South Dakota is priced at approximately $717–$829/ton. Prices vary by county, co-op, and contract type. GrainBrief tracks weekly USDA AMS price reports and sends price alerts when signals change.
South Dakota sits in the Great Plains supply zone. South Dakota receives fertilizer via Missouri River barge terminals at Sioux City and by rail. Premiums over NOLA benchmarks typically run 12–20% depending on season and logistics conditions.
Historically, fall pre-buy programs (August–October) offer the best pricing for the following spring application season. In-season spot prices during March–June carry a 5–15% logistics premium. GrainBrief's weekly signal tells you exactly when to act.
GrainBrief tracks USDA AMS, FRED, and EIA data weekly and sends you a buy, hold, or negotiate signal. Stop guessing. Start buying on data.
Start Free Trial →