Aaron Hager, University of Illinois-Urbana-Champaign;
Eric Anderson, University of Illinois-Urbana-Champaign;
German Bollero, University of Illinois-Urbana-Champaign;
Thomas Voigt, University of Illinois-Urbana-Champaign
W. W. Wilhelm, USDA-ARS;
J. Richard Hess, Idaho Natl. Engineering Lab;
Jane Johnson, USDA-ARS;
Hero T. Gollany, USDA-ARS;
Douglas L. Karlen, USDA-ARS;
John Baker, USDA-ARS;
Gary Varvel, USDA-ARS
Tomas Persson, The University of Georgia;
Axel Garcia y Garcia, The University of Georgia;
Joel O. Paz, The University of Georgia;
James W. Jones, University of Florida;
Gerrit Hoogenboom, The University of Georgia
C.P. West, University of Arkansas;
K.R. Brye, University of Arkansas;
M.P. Popp, University of Arkansas;
L.R. Oliver, University of Arkansas;
P.A. Beck, University of Arkansas;
J.L. Schuler, University of Arkansas
Margaret E. Mangan, University of Minnesota;
Donald L. Wyse, University of Minnesota;
Craig C. Sheaffer, University of Minnesota;
Peter H. Graham, University of Minnesota;
Sanford Weisberg, University of Minnesota