John T. O'Donovan¹, Kenneth Neil Harker², Thomas Kelly Turkington³, Guy P. Lafond⁴, Newton Z. Lupwayi⁵, Robert E. Blackshaw⁶, George W. Clayton⁶ and Lloyd M. Dosdall⁷, (1)6000 C&E Trail, Agriculture & Agri-Food Canada, Lacombe, AB, CANADA, (2)Agriculture and Agri-Food Canada, Lacombe, AB, Canada, (3)Agriculture & Agri-Food Canada, Lacombe, AB, Canada, (4)Agriculture & Agri-Food Canada, Indian Head, SK, Canada, (5)PO Box 3000, Agriculture & Agri-Food Canada, Lethbridge, AB, CANADA, (6)Lethbridge Research Centre, Agriculture & Agri-Food Canada, Lethbridge, AB, Canada, (7)University of Alberta, Edmonton, AB, Canada