Corn, Wheat Futures Hit Multi-Year Highs on Global Supply Concerns

Corn and wheat futures on the Chicago Board of Trade surged to multi-year highs on Wednesday, as mounting concerns over U.S. crop yields and ongoing disruptions to Black Sea exports tightened the global supply outlook.

Market Reaction

The most-active corn contract on the Chicago Board of Trade (CBOT) climbed 0.8% to $5.27-3/4 per bushel as of 11:30 GMT. The contract touched an intraday high of $5.30, its highest price since July 2023, surpassing a previous high set on Tuesday.

CBOT wheat futures saw a sharper increase, rising 1.5% to $7.13-1/2 per bushel. The contract reached an intraday peak of $7.18, a level not seen since May 2024. In contrast, soybean prices were largely stable, as support from the corn rally was offset by falling crude oil prices, which weighed on soyoil futures.

U.S. Crop Woes and Black Sea Tensions

The rally in corn is primarily fueled by worries about the U.S. harvest. A widely watched U.S. Midwest crop tour last week projected that this year's corn production would be significantly below the U.S. Department of Agriculture's (USDA) current forecasts. These concerns were amplified by a USDA report on Monday showing that U.S. corn crop conditions had deteriorated more than analysts had anticipated.

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According to analysts at Argus, the combination of worsening crop health and lower yield expectations is the main factor driving prices higher. At the same time, geopolitical tensions are roiling the broader grain market. Shipments from Russian and Ukrainian Black Sea ports have come to a near standstill following mutual attacks in recent weeks, raising significant fears over the flow of Ukrainian corn and Russian wheat to global buyers.

South American Outlook

While North American and European supply faces uncertainty, some potential relief could come from South America. The Buenos Aires Grain Exchange reported on Tuesday that the El Niño weather phenomenon is expected to bring beneficial rainfall to Argentina, a major global corn exporter.

Analysts expect the country to expand its corn acreage, which could partially offset shortfalls elsewhere. However, the exchange noted that Argentine farmers still face pressure from rising production costs and the risk of crop pests, which could impact final planting decisions.