1. Visiting Scientist, Semiarid Prairie Agricultural Research Centre (SPARC), Agriculture and Agri-Food Canada, Box 1030, Swift Current, Saskatchewan S9H 3X2 Canada
2. Canadian
Light Source, University of Saskatchewan, Saskatoon, Saskatchewan S7N 2V3 Canada
3. Delaware
Environmental Institute and Department of Plant and Soil Sciences, University of Delaware, Newark, Delaware 19711 United States
4. Department
of Soils and Agri-Food Engineering, Université Laval, Québec, Québec G1V 0A6 Canada
5. Semiarid
Prairie Agricultural Research Centre (SPARC), Agriculture and Agri-Food Canada, Box
1030, Swift Current, Saskatchewan S9H 3X2 Canada