Corn and soybean futures extended their decline on Thursday, falling to multi-month lows as favorable growing conditions across the United States strengthened expectations for a large harvest and encouraged further selling by investors.

The most-active corn contract on the Chicago Board of Trade (CBOT) fell 1.1% to $4.26¾ per bushel, marking its lowest level since February 20. Soybeans also declined 0.6% to $11.47½ per bushel, reaching their weakest point since early April.

Meanwhile, wheat prices edged lower by 0.1% to $5.86½ per bushel as improving weather conditions and the start of the U.S. harvest increased expectations of ample supplies.

Favorable Weather Pressures Prices

The primary driver behind the selloff has been the increasingly positive outlook for U.S. corn and soybean crops.

Recent rainfall and favorable temperatures across major growing regions have improved crop prospects, reducing concerns about supply shortages. As expectations for larger harvests grow, investment funds that had accumulated sizable bullish positions earlier in the year have been reducing their exposure.

Analysts noted that speculative funds had built near-record long positions in agricultural commodities during the first half of the year, making the market vulnerable to profit-taking when crop conditions improved.

Weak Chinese Demand Adds Pressure

Another factor weighing on grain markets is the lack of significant crop purchases from China.

Despite recent trade discussions between Washington and Beijing, traders have yet to see substantial buying activity from Chinese importers. Market participants continue to monitor U.S. export sales data for signs of stronger international demand.

The absence of large Chinese purchases has created additional uncertainty for traders who had expected stronger export support for U.S. agricultural commodities.

Lower Oil Prices Remove Support

Declining crude oil prices also contributed to weakness in agricultural markets.

Oil prices eased after hopes increased for broader stability in the Middle East following reports of a ceasefire agreement between Israel and Lebanon. Lower energy prices reduce support for biofuel-related crops such as corn and soybean oil, which are important feedstocks for ethanol and renewable diesel production.

However, analysts note that grain markets have recently become more influenced by seasonal crop fundamentals than by fluctuations in energy markets.

Wheat Faces Growing Supply Pressure

In the wheat market, supply concerns continue to ease.

The U.S. winter wheat harvest is now underway, while forecasts point to increased production in Russia, one of the world's largest wheat exporters. The prospect of abundant global supplies has limited any upside potential for wheat prices.

Market Snapshot

Outlook

Agricultural markets remain heavily focused on weather conditions as the U.S. growing season progresses. If favorable weather persists, expectations for strong crop yields could continue to pressure corn and soybean prices.

At the same time, traders are watching export demand, particularly from China, as well as upcoming U.S. government crop and sales reports for clues about future market direction. With harvest expectations improving and global supplies appearing comfortable, the near-term outlook remains challenging for grain prices.