Business Week (May 3, 2011) | CHICAGO Grains futures traded lower Monday on the Chicago Board of Trade. Wheat for July delivery fell 9.50 cents to $7.9175 a bushelJuly corn dropped 22 cents to $7.3450 a bushelJuly oats were down 9.50 cents to $3.43 a bushelwhile July soybeans edged down 1 cent to $13.93 a bushel.