Urea-to-corn price ratio: how the exchange relationship has shifted from 2018 to 2026

Tracking the ratio between urea prices and corn values in the first half of each year reveals significant shifts in farmers' purchasing power over time. Between 2018 and 2026, this relationship went through periods of intense pressure and relative relief, directly affecting fertilization decisions. Understanding this historical pattern helps growers better manage production costs and risk exposure.

The exchange ratio between urea and corn serves as a key indicator of production cost dynamics for grain farmers. When more bags of corn are needed to purchase a ton of nitrogen fertilizer, farm profitability is squeezed. The opposite scenario signals a more favorable environment for producers.

Over the period analyzed, the first halves of 2021 and 2022 stood out as the most challenging, reflecting the global surge in fertilizer prices driven by logistical bottlenecks, geopolitical conflicts, and rising energy costs. During that stretch, growers needed a substantially larger volume of corn to cover the same urea expenditure compared to earlier years.

From 2023 onward, the normalization of supply chains and a decline in international fertilizer prices brought some relief, improving the exchange ratio. In 2025 and 2026, conditions appear more balanced, although volatility in domestic corn prices still calls for caution in crop planning.

For producers, monitoring this indicator throughout the year is a practical management tool. Locking in urea purchases when the exchange ratio is favorable can translate into real margin gains, particularly for summer and second-crop corn, where nitrogen accounts for a significant share of variable costs.