The most active wheat contract for December delivery was down 1.25 cents, or 0.25 percent, to settle at 4.8925 U.S. dollars per bushel. December corn was up 2.25 cents, or 0.58 percent, to 3.87 dollars per bushel. November soybeans fell 1 cent, or 0.11 percent, to 9.1525 dollars per bushel.
Soybean futures ended slightly lower despite fresh crop export sales to China.
The U.S. Department of Agriculture said on Monday (USDA) that private exporters reported the sale of 198,000 metric tons of soybeans to China for delivery in the 2019/20 marketing year.
Another sale of 240,000 metric tons of U.S. soybeans was reported for delivery to unknown destinations.
Wheat futures went down on technical selling and ample global supplies.