Grains mostly higher Tuesday - UPI.com CHICAGO, Jan. 31 (UPI) -- Grain futures closed mostly higher Tuesday on the Chicago Board of Trade as the dollar index rose 0.18 percent. Corn was up 6 1/4 to up 7 1/2, soybeans were up 12 to up 13 3/4, wheat was up 17 1/2 to up 21 1/2 and oats were off 1 to up 6. Mexico reported corn production for 2011 came in at 19.2 million metric tons. In Ukraine, a drought that has hit the winter wheat crop is likely to result in more acres being turned around to corn. Fear of winter kill damage in the Black Sea region supported gains in U.S. wheat prices. In the soybean market, early gains were held in check by the stronger dollar, while weather patterns in South America were also viewed as negative. The prices: Corn: Mar 6.39 up 7 1/4, May 6.45 1/4 up 7 1/2, Jly 6.48 3/4 up 7 1/2, Sep 5.93 1/2 up 6 1/4. Soybeans: Mar 11.99 up 13 3/4, May 12.08 1/2 up 13 1/4, Jly 12.18 up 13, Aug 12.16 up 12. Wheat: Mar 6.66 up 21 1/4, May 6.80 1/4 up 21 1/2, Jly 6.91 up 19 3/4, Sep 7.04 up 17 1/2. Oats: Mar 2.98 up 6, May 2.92 3/4 off 1, Jly 2.97 unchanged, Sep 3.02 off 1/2.