The price of corn is falling to a three-week low as early harvests come in strong.
December corn fell 8.5 cents to $4.61 a bushel Thursday.
December wheat fell 6 cents to $6.4025 a bushel and November soybeans rose 15 cents to $13.675 a bushel.
Gold and most other metals fell. Copper closed slightly higher.
Gold for December delivery lost $17 to $1,373 an ounce.
Energy prices were mixed.
Crude oil and natural gas moved in opposite directions after the U.S. government issued weekly supply reports for both commodities.
Benchmark oil for October delivery rose $1.14, or 1 percent, to close at $108.37 a barrel. Natural gas futures fell 10.8 cents, or 3 percent, to $3.575 per 1,000 cubic feet