Corn futures extended their midweek losses on Wednesday, with front-month contracts dropping 8 to 10 cents as a sharp decline in crude oil prices weighed on the agricultural commodity complex. The selloff in crude oil, which fell more than $6 per barrel, followed reports that the United States and Iran are nearing a memorandum of understanding that could ease geopolitical tensions and allow safe passage through the Strait of Hormuz.
Market Movers: Crude Oil and Geopolitical Developments
The potential US-Iran agreement, which also includes a path toward ending the broader conflict, triggered a broad-based selloff in energy markets. Crude oil’s decline pressured corn futures because lower energy costs reduce demand for ethanol, a key corn-based biofuel. The CmdtyView national average cash corn price fell 10 cents to $4.28 3/4 per bushel.
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May 2026 corn futures settled at $4.52 1/4, down 13 1/4 cents on the session. July 2026 corn fell 10 cents to $4.70, while December 2026 corn dropped 9 cents to $4.91 1/2. New crop cash prices also declined, settling 9 1/2 cents lower at $4.47 1/4.
Ethanol Production and Inventory Data
Weekly data from the Energy Information Administration (EIA) released Wednesday morning showed ethanol production rising by 8,000 barrels per day in the week ending May 1, bringing total output to 1.017 million barrels per day. Ethanol inventories increased by 139,000 barrels to 26.02 million barrels.
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However, ethanol blending activity weakened during the same period. Blender inputs fell by 31,000 barrels per day to 139,000 bpd, while refiner inputs dropped by 15,000 bpd to 902,000 bpd. The decline in blending demand suggests that lower crude oil prices are already reducing the economic incentive for ethanol use.
What This Means for Corn Markets
The combination of lower crude oil prices and softening ethanol demand creates headwinds for corn prices heading into the summer growing season. Corn is the primary feedstock for US ethanol production, which accounts for roughly 40% of total domestic corn consumption. When crude oil prices fall, ethanol becomes less competitive as a fuel additive, potentially reducing corn demand from the biofuel sector.
Additionally, 304 delivery notices were issued against May corn futures overnight, all by the ADM house account, signaling ample physical supplies available for delivery. This further reinforces the bearish near-term outlook.
Conclusion
Corn futures face sustained pressure from the energy sector as a potential US-Iran agreement reshapes global oil markets. While ethanol production remains relatively sturdy, declining blending activity and rising inventories suggest that lower crude prices could erode corn demand in the weeks ahead. Traders will monitor geopolitical developments and weekly EIA data for further signals on the direction of energy and agricultural markets.
FAQs
Q1: Why does crude oil affect corn prices?
Crude oil prices influence corn because corn is used to produce ethanol, a biofuel blended with gasoline. When crude oil prices fall, ethanol becomes less economically attractive, reducing demand for corn from ethanol producers.
Q2: What is the Strait of Hormuz and why does it matter?
The Strait of Hormuz is a narrow waterway between the Persian Gulf and the Gulf of Oman through which about 20% of the world’s oil passes. A US-Iran agreement ensuring safe passage through the strait would increase global oil supply expectations, pushing crude prices lower.
Q3: How much corn goes to ethanol production?
Approximately 40% of the US corn crop is used for ethanol production, making it the single largest source of corn demand. Changes in ethanol demand directly impact corn prices and farmer profitability.
