Agronomy Publications Agronomy 8-2014 2014 North Central Regional Conference C. Lee Burras Iowa State University, lburras@iastate.edu Follow this and additional works at: htp://lib.dr.iastate.edu/agron_pubs Part of the Agronomy and Crop Sciences Commons , and the Soil Science Commons Te complete bibliographic information for this item can be found at htp://lib.dr.iastate.edu/ agron_pubs/58. For information on how to cite this item, please visit htp://lib.dr.iastate.edu/ howtocite.html. Tis Article is brought to you for free and open access by the Agronomy at Iowa State University Digital Repository. It has been accepted for inclusion in Agronomy Publications by an authorized administrator of Iowa State University Digital Repository. For more information, please contact digirep@iastate.edu.