1. Department of Ecosystem Science and ManagementTexas A&M AgriLifeFort Stockton Texas USA
2. Department of Ecosystem Science and ManagementTexas A&M UniversityCollege Station Texas USA
3. Dow AgroSciencesStephenville Texas USA
4. Department of Biological and Agricultural EngineeringTexas A&M AgriLifeEl Paso Texas USA
5. Department of Natural Resource Ecology and ManagementOklahoma State UniversityStillwater Oklahoma USA