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By Charles Hurburgh, Department of Agricultural and Biosystems Engineering; Roger Elmore, Department of Agronomy

Weather this fall has benefited the corn crop by allowing late planted corn to mature. Much of the state recently experienced its first killing frost. The USDA October yield estimate of 172 bushels per acre in Iowa surprised many. If this is the final yield, 2008 will produce the third highest yield recorded, behind the 173 bushels per acre of 2005 and 181 bushels per acre in 2004.