Chicago Board of Trade (CBOT) grains futures closed lower on Tuesday with soybeans continuing to fall due to improved weather and profit-taking.

The most active corn contract for December delivery fell 0.5 cent, or 0.14 percent, to 3.50 U.S. dollars per bushel. December wheat delivery went down 1.75 cents, or 0.40 percent, to 4.3475 dollars per bushel.

November soybeans declined by 6.25 cents, or 0.63 percent, to 9.8475 dollars per bushel.

CBOT floor brokers reported that funds bought 2,000 contracts of corn, sold 4,000 contracts of soybeans while were flat in wheat.

Profit-taking in the past two sessions sent soybeans back below 10-dollar-per-bushel level. Meanwhile, the improved weather after days of thunderstorm in U.S. Mideast allowed farmers to continue the delayed harvest.

Russian wheat exports have been large so far in October. Some analysts are now raising their annual exports of Russian wheat to 34 million metric tons, while the U.S. Department of Agriculture has put its estimate at 32.5 million metric tons.

Corn market was relatively calm on Tuesday, with its prices remaining almost unchanged.