Grain futures closed mixed Thursday on the Chicago Board of Trade as the dollar index was flat, dropping 0.08 percent. Corn was off 2 1/2 to off 3 1/4, soybeans were up 14 1/4 to up 17 1/2, wheat was off 8 34 to off 11 and oats were off 2 3/4 to off 3 1/4. Corn futures dropped modestly with equities on Wall Street closing mixed in a week that has avoided massive turns higher or lower. Wheat was lower, although China buying soybeans would likely divert more wheat to feedlots. Soybeans rose with the harvest gaining momentum and reports of China returning to a buying posture. The prices: Corn: Dec 6.38 1/4 off 2 1/2, Mar 6.49 3/4 off 3, May 6.56 1/2 off 3 1/2, Jly 6.61 1/4 off 3. Soybeans: Nov 12.57 up 17 1/2, Jan 12.66 3/4 up 17 1/4, Mar 12.74, up 17, May 12.76 3/4 up 14 1/4. Wheat: Dec 6.18 off 8 3/4, Mar 6.53 1/2 off 9 3/4, May 6.77 3/4 off 9 3/4, Jly 6.95 1/4 off 11. Oats: Dec 3.41 3/4 off 3 1/4, Mar 3.50 3/4 off 3 1/4, May 3.56 3/4 off 2 3/4, Jly 3.62 3/4 off 2 3/4.