[1
]Department of Agronomy and Horticulture University of Nebraska Lincoln NE 68583 USA
[2
]Ethiopian Institute of Agricultural Research B. O. Box 2003 Addis Ababa Ethiopia
[3
]National Drought Mitigation Center School of Natural Resources University of Nebraska
Lincoln NE 68583 USA
[4
]Feed the Future Sustainable Intensification Innovation Lab Kansas State University
Manhattan KS 66506 USA
[5
]International Maize and Wheat Improvement Center (CIMMYT) ILRI Sholla Campus P. O.
Box 5689 Addis Ababa Ethiopia