1. Dep. of Plant and Soil SciencesUniversity of Kentucky417 Plant and Soil Science Building, 1405 Veterans Dr.LexingtonKY40546
2. UF/IFAS Fort Lauderdale Research and Education CenterUniv. of Florida3205 College Ave.Ft. LauderdaleFL33314
3. Ohio State Univ.344 Howlett Hall, 2001 Fyffe Ct.ColumbusOH43210
4. Dep. of Plant and Environmental SciencesNew Mexico State Univ.P.O. Box 30001Las CrucesNM88003
5. Auburn Univ.Crop, Soil and Environmental Sciences Dep.Funchess HallAuburnAL36849
6. Dep. of Agronomy and HorticultureUniv. of Nebraska‐LincolnLincolnNE68583
7. Dep. of Crop and Soil SciencesNorth Carolina State Univ.Campus Box 7620RaleighNC27695
8. Mississippi State Univ.356 Dorman HallStarkvilleMS39762
9. West Florida Research and Education CenterUniv. of Florida4235 Experiment Dr.JayFL32565