Traditionally soybeans [Glycine max (L) Merr.] have not been grown in Southeastern Idaho. Prior to 2010 there have been no extensive trials to determine if it is a viable crop for this region. Rexburg, Idaho (43° 50' 2" N, 111° 48' 18" W) is located in a high desert region at an elevation of 4865 feet with an average frost-free growing period of 105 days. Results of a 2010 preliminary trial of seven Pioneer^® soybean varieties at Brigham Young University-Idaho indicate that soybeans have potential as a commercial crop in Southeastern Idaho when grown under irrigated conditions.  A follow-up study planned for 2011 will examine the same seven Pioneer^® varieties. The nitrogen-fixing bacteria, Bradyrhizobium japonicum, is not native in the soils of this region, the 2011 trial will examine yield potential of both inoculated and un-inoculated seed.