Corn Futures Hit 13-Month High on U.S. Yield Concerns and Black Sea Disruptions

Corn futures surged to their highest level in over a year on Wednesday, as traders priced in concerns over a smaller-than-expected U.S. harvest and persistent global supply chain issues. The most-active December corn contract on the Chicago Board of Trade (CBOT) climbed to $5.30 per bushel, a peak not seen on a continuous chart since July 2023.

U.S. Crop Conditions Deteriorate

The primary catalyst for the rally was a downward revision of U.S. corn yield expectations. According to a report from the U.S. Department of Agriculture (USDA) on Monday, weekly crop condition ratings declined more sharply than traders had anticipated. This unexpected drop in crop quality has prompted market participants to lower their forecasts for the upcoming harvest, adding upward pressure to prices.

Global Supply Pressures

Beyond domestic concerns, ongoing disruptions to grain exports from the Black Sea region continue to provide support for corn prices. These geopolitical tensions have tightened the global supply outlook, making U.S. grain more critical to international buyers.

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In contrast, supply prospects from South America appear stable. The Buenos Aires Grains Exchange reported on Tuesday that Argentina plans to plant 8.4 million hectares of corn for the 2026/27 season. This figure matches the previous cycle's acreage, with planting decisions supported by favorable moisture conditions linked to the El Niño weather pattern.

Market Reaction

Across the board, corn futures contracts on the CBOT registered gains of 3 to 5 cents per bushel during Wednesday's trading session. The move to a 13-month high signals a significant shift in market sentiment, which had been less bullish in previous months. Investors will be closely watching upcoming weather patterns and future USDA reports for further indications on crop yields.