Michael L. Flessner, J. Scott McElroy, James H. Baird, and Brent D. Barnes.

Michael L. Flessner is a research associate III, and J. Scott McElroy is an associate professor, agronomy and soils department, Auburn University; James H. Baird is an extension turfgrass specialist and Brent D. Barnes is an assistant specialist, department of botany and plant sciences, University of California, Riverside.