CHICAGO (AP) _ Grain futures were mostly higher in early trading Wednesday on the Chicago Board of Trade. Sept. corn…CHICAGO (AP) _ Grain futures were mostly higher in early trading Wednesday on the Chicago Board of Trade. Sept. wheat rose by 1.75 cents at $6.32 a bushel. Aug. soybeans rose by 7.5 cents at $11.55 a bushel. Beef was mixed and pork was lower on the Chicago Mercantile Exchange.