Grains and oilseeds: U.S. wheat problems support prices, but Black Sea supply and fast corn planting cap the market

The market tone on May 22 was mixed overall. The strongest supportive cluster of news came from U.S. wheat, where a worsening winter wheat outlook, drought in Nebraska, quality issues in Kansas, and disappointing South Texas yields all pointed to tighter supply or lower-quality output.

At the same time, the broader global backdrop was not clearly bullish. Russia raised expectations for grain production and projected large 2025/26 grain exports, reinforcing the idea of ample Black Sea supply. Argentina also moved to cut wheat export taxes and signaled lower taxes for soybeans and corn over time, improving incentives to sell and export.

For corn, U.S. fundamentals leaned softer: planting is running ahead and favorable weather is improving crop prospects. Still, export demand remained active, with U.S. corn sold to Mexico and South Korea buying about 135,000 tons, helping offset some of the pressure.

For soybeans, rising Chinese imports offered support, but Argentine tax policy signals pointed in the opposite direction by potentially increasing future export availability.

Bullish factors

• The worsening outlook for the U.S. winter wheat crop supported wheat prices by pointing to tighter supply.
• Severe drought in Nebraska and reports of potentially very poor Kansas wheat production added to supply concerns.
• Kansas quality problems may reduce milling wheat availability and shift some grain into feed channels.
• Disappointing South Texas yields and wet-weather harvest delays added another supportive wheat signal.
• In corn, U.S. export sales, including sales to Mexico, provided demand-side support.
• South Korea’s purchase of about 135,000 tons of corn signaled active feed grain demand.
• For soybeans, rising Chinese imports pointed to stronger demand from the world’s largest buyer.
• In the Black Sea, refinery strikes in Russia and stalled Ukraine peace talks preserved a degree of risk premium through fuel, logistics, and export uncertainty.

Bearish factors

• Russia’s higher grain harvest estimate and expectation of large 2025/26 grain exports weighed on wheat and broader grain sentiment.
• Argentina’s wheat export tax cut encourages sales and exports, increasing available supply to the world market.
• For corn, faster U.S. planting progress and favorable weather reduced early-season production risk.
• Additional Argentine tax signals for soybeans and corn also leaned bearish, even if some of the changes are aimed at later periods rather than immediate flows.

• Wheat: supportive U.S. crop news was significant, but globally it was partly offset by Black Sea supply expectations and Argentina’s tax cut.
• Corn: the tone was mixed; better U.S. crop prospects were bearish, while export demand limited downside.
• Soybeans: stronger Chinese demand was supportive, but Argentine tax policy developments kept the broader backdrop from turning clearly bullish.

The day’s overall market signal was neutral. Wheat had the strongest bullish story because of mounting U.S. production and quality concerns, but that support was checked by expectations of ample Russian exports and more competitive Argentine supply. Corn and soybeans also showed mixed evidence, with demand support present but not strong enough to fully overcome supply-side pressure. In short, the market ended the day balancing localized crop stress against expectations of still-ample exportable supply.