Wheat for December delivery dropped 6.25 cents to $4.9875 a bushel, while December corn lost 1 cent to $3.72 a bushel and oats for December delivery rose 1.5 cents to $2.515 a bushel. November soybeans slid 5.5 cents to $9.775 a bushel.
Meanwhile, beef futures advanced and pork futures traded lower on the Chicago Mercantile Exchange.
December live cattle inched up 0.15 cent to 85.8 cents a pound; November feeder cattle gained 0.52 cent to 95.12 cents a pound; December lean hogs fell 0.37 cent to 54.1 cents a pound; and February pork bellies shed 0.4 cent to 81.85 cents a pound.