Fertilizer Price Hikes Lifted Corn and Soybean Costs
Rising input costs are forcing farmers to adjust application rates as supply chain chokepoints impact global yields.
Updated on Oct. 1, 2026 in Agriculture
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Diammonium phosphate prices reached $802.5 per metric ton in the first nine months of 2026, a 28.4% increase from the $625 price recorded at the end of 2025. This surge in production and transport costs, driven by instability in the Middle East, has simultaneously pushed corn prices up 13.3% and soybean prices up 22.6%.
Why it matters
Disruptions at the Strait of Hormuz, which facilitates one-third of global fertilizer trade, have created critical supply constraints and raised input costs for producers. These higher overheads have forced many farmers to reduce fertilizer application rates, threatening future planting outputs.
Diammonium phosphate prices rose 28.4% during the first nine months of 2026 to reach $802.5 per metric ton, compared to $625 at the end of 2025. These spikes occurred as corn and soybean prices climbed 13.3% and 22.6%, respectively, while one-third of global fertilizer trade remained vulnerable.
The players
Strait of Hormuz
A critical maritime chokepoint that facilitates the transit of one-third of global fertilizer trade.
The details
Shipping disruptions in the Strait of Hormuz have compelled global suppliers to reroute chains across significantly longer distances, adding substantial risk premiums to transport. Concurrently, rising natural gas and ammonia prices have elevated the baseline production cost of nitrogen-based fertilizers. These dual pressures are squeezing operational margins for farmers, who are now forced to compromise on application volumes to maintain solvency.
Timeline
Prices at the end of 2025 were $625 per metric ton.
Fertilizer prices rose 28.4% during the first nine months of 2026.
Hostilities resumed in mid-July 2026 following a collapsed ceasefire.
Farmers are adjusting application rates for the 2026-2027 planting season.
Market Landscape
This volatility follows the collapse of a regional ceasefire in mid-July 2026, which exacerbated existing fragilities in energy and input supply chains. It echoes historical precedents where regional conflict serves as a multiplier for inflationary pressure on essential agricultural inputs.
Operators should monitor energy price fluctuations as a leading indicator for nitrogen-based fertilizer costs in the coming quarter. Suppliers and producers must prepare for potential yield variations as lower application rates impact the upcoming planting season.
The takeaway
The intersection of energy risk premiums and maritime chokepoints has fundamentally shifted the cost-benefit analysis for crop fertilization. Operators should track nitrogen-based fertilizer pricing as a key metric for managing input costs throughout the remainder of the 2026-2027 season.
Further reading
For broader trends in supply chain management, visit our Agriculture section.
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