D.A. Sleper1, H. F. Mayland, R.J. Crawford, G.E. Shewmaker, M.D. Massie. 1. Dep. of Agronomy, Univ. of Missouri-Columbia, Columbia, MO 65211. Univ. of Missouri-Columbia, the Southwest Research Center, Mt. Vernon, MO 65712. USDA-ARS, Kimberly, ID 83341. Univ. of Idaho, Twin Falls, ID 83303.