Even though the average trade estimate for corn production shows very little change from the November USDA report, there are a number of analysts who believe the average corn yield could be increased by a half-bushel or more.USDA will release many numbers tomorrow morning, but it is unlikely that any of them will make any significant changes in the market outlook. This is due to several reasons: U.S. and world supplies are very comfortable; the Northern Hemisphere growing season is still months away; and there are no significant worries today about Brazil and Argentina production. Following are several items to watch in tomorrow’s numbers:U.S. Final 2015 Crop ProductionEven though the average trade estimate for corn production shows very li...