Mary Collins¹, Dawn Ferris², Nicholas Balster³, Birl Lowery⁴, Carrie Laboski⁵, Patrick Drohan⁶, Nicholas Basta⁷, Fred Madison⁵ and Michel D. Ransom⁸, (1)Soil and Water Science Department, University of Florida, Elkader, IA, (2)Soil Science Society of America, Madison, WI, (3)1525 Observatory Drive, University of Wisconsin-Madison, Madison, WI, (4)UW Madison, Madison, WI, (5)Soil Science, University of Wisconsin, Madison, WI, (6)Pennsylvania State University, University Park, PA, (7)The Ohio State University, Columbus, OH, (8)2004 Throckmorton Plant Science Center, Kansas State University, Manhattan, KS