Potash Prices
Potash (MOP) Price in Illinois — Spring 2026
GrainBrief — Updated May 2026 — USDA AMS, FRED, EIA data
Potash (MOP) is priced at $295–$360/ton in Illinois in spring 2026. Illinois potash prices are consistently among the lowest in the Midwest due to Illinois River terminal access.
Illinois Price vs. National Benchmark
| Market | Price Range | vs. 2025 |
|---|
| Illinois retail average | $295–$360/ton | +6% |
| Corn Belt average | $310–$380/ton | +25–30% |
| NOLA barge reference | $290–$350/ton | +20–25% |
What Drives Illinois Potash (MOP) Pricing
Illinois potash prices are consistently among the lowest in the Midwest due to Illinois River terminal access.
- Compare quotes to USDA AMS benchmark — USDA publishes weekly retail fertilizer prices by region. If your quote is more than 8% above benchmark, push back.
- Watch NOLA barge prices — terminal prices follow NOLA barge within 2–3 weeks. A barge price drop signals incoming retail relief.
- Pre-buy fall applications before August — China export restriction decisions in August will move the market; pre-buying locks in current prices.
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