1. Department of Soil and Crop Sciences, Texas A&M Agrilife Research, Texas A&M University System, El Paso, TX, USA
2. Plant and Environmental Sciences Dept., New Mexico State University, Las Cruces, NM, USA
3. Department of Horticultural Sciences, Texas A&M Agrilife Research, Texas A&M University System, El Paso, TX, USA
4. Plant and Soil Sciences, Oklahoma State University, Stillwater, OK, USA