The USDA says export sales for a couple of key commodities hit marketing year lows during the week ending March 7th. Beef and wheat saw lower than average movement due to heavy competition from other exporters and the relative strength of the dollar. Corn remains one of the bright spots, with sales up on the week and ahead of what’s needed to meet projections for the current marketing year. The USDA’s next set of supply and demand estimates is out April 11th.