(New throughout, adds latest prices from US trading session)
CHICAGO, Nov 3 (Reuters) - Chicago Board of Trade corn futures fell to a four-month low on Tuesday while soybean futures set a 2-1/2-month low on expectations for large US crops and concerns over export demand, analysts said.
Wheat futures also declined as traders focused on plans for peace talks next week between Russia and Ukraine, both of which are large exporters.
Disappointment over US corn export sales weighed on CBOT futures. The US Department of Agriculture has previously estimated that farmers this year produced the nation's second-largest corn crop on record, analysts said.
The USDA reported that exporters sold 315,000 metric tons of US corn to Mexico and 136,000 metric tons to South Korea for delivery in 2026/27. On Monday, the agency confirmed sales of 1.7 million metric tons to Mexico, including 1.1 million tons for 2026/27 delivery.