MORRISON, Alexander1, SIMPKINS, William W.
2, FRANZ, Kristie J.
3, WANAMAKER, Alan D. Jr
4, ACAR, Özlem
2, HELMERS, Matthew J.
5, and CRUSE, Richard M.
6, (1) Dept. of Geological and Atmospheric Sciences, Iowa State University, Ames, IA 50011, alexmo@iastate.edu, (2) Department of Geological and Atmospheric Sciences, Iowa State University, 253 Science I, Ames, IA 50011, (3) Geological and Atmospheric Sciences, Iowa State University, 3023 Agronomy Hall, Ames, IA 50011, (4) Department of Geological and Atmospheric Sciences, Iowa State University, 253 Science I, Ames, IA 50011-3212, (5) Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50010, (6) Department of Agronomy, Iowa State University, 3212 Agronomy Hall, Ames, IA 50011