Early harvest results are showing what many farmers had expected; a reduction in yield production from previous years.  Scott Stahl farms in McCook County, South Dakota and serves as the president of the South Dakota Corn Growers Association.  He says he has started harvesting both corn and soybeans.  Stahl says going into harvest he was concerned about the quality of the grain; however, he says test weights are better than expected.  As for the grain moisture levels, Stahl says his corn and soybeans have reached full maturity with relative low moisture percentage levels.  The South Dakota corn grower says his crops have matured past the point where a frost would be more beneficial than detrimental.