DES MOINES, Iowa (Agriculture.com)--The pre-opening prices for the CME Group grain commodities for Wednesday, September 14, 2011 are mostly lower. Corn and soybeans are seen opening 4-6 cents lower, and wheat up 5-7 cents.

In overnight electronic trading, the Dec. corn futures contract traded 4 3/4 cents lower at $7.18 1/4 per bushel. The Nov. soybean futures contract traded 4 3/4 cents lower at $13.87 per bushel. The Dec. wheat futures contract traded 5 cents higher at $7.07. For Dec. soymeal futures, the contract traded steady at $362.70 and Dec. soyoil $0.11 lower at $57.52. 

The outside markets are not supportive for Wednesday's grain trade. The real factors driving the calls are the lower overnight markets.