The best window to lock in fertilizer prices in 2026 is August–October for nitrogen and phosphate — before spring demand spikes and after the August China export restriction decision provides market clarity. Potash and herbicide prices are already favorable; lock in now. USDA AMS data shows pre-season contracts average 12–18% below peak spring spot prices over the past 5 years.
| Product | Pre-season avg | Spring spot avg | Typical savings |
|---|---|---|---|
| Anhydrous ammonia | 10–15% below | Peak demand | $90–$150/ton |
| DAP/MAP | 8–12% below | Peak demand | $55–$90/ton |
| Potash | 5–8% below | Peak demand | $18–$30/ton |
| UAN 32% | 8–12% below | In-season side-dress | $0.03–$0.05/gal |
Most co-ops and retailers offer pre-pay or pre-book fertilizer contracts in August–November for spring delivery. Pre-pay (full payment at contract) typically gets the best price. Pre-book (payment at delivery) locks in the price but delays cash outlay. Some contracts include price-drop protection — ask for it.
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