BY BLOOMBERG Soybeans dropped the most in more than two weeks as demand for supplies from the U.S. declines and the harvest advances in Brazil, set to be the world's largest grower this year. Corn also fell. About 17.1 million bushels of soybeans were inspected for export in the week through March 7, down 58% from the prior seven days and the lowest since September, U.S. Department of Agriculture data show. In Brazil, 48% of the crop was harvested