Corn and soybean markets have been torn back and forth every day this week based on the 2012/13 supply and demand projections from the USDA Outlook Conference that concluded today. There was really nothing new in this week's numbers. The initial baseline projections were made public a few weeks ago (they were prepared back in November for budgeting purposes since USDA needs some basis for projecting farm program costs in future years).Corn has been the leading bearish attraction because of the widespread belief, supported by USDA's projections, that U.S. farmers are going to plant a lot of corn in 2012. There is no reason to argue with that assumption. Net per acre returns for corn far exceed nearly every other crop on today's farm crop b...