Dr. James Gibson received his Ph.D. from North Carolina State University and is corporate manager of quality control for Fafard, Inc., a substrate manufacturing company and nutrient testing facility.
Dr. Dharmalingham Pitchay received his Ph.D. from North Carolina State University. He has a long-standing involvement in the physiology of plant nutrition and tropical agriculture.
Dr. Brian Whipker is a professor at North Carolina State University, with a research program focusing on plant nutrition and plant growth regulators.
Dr. Paul Nelson is a professor at NCSU, focusing on soils and nutrition of greenhouse crops. Dr. Nelson is the author of Greenhouse Operations and Management, now in its sixth edition.
Dr. John Dole is a professor in the Department of Horticultural Science at North Carolina State University. He is the co-author of Floriculture Principles and Species and Cutting Propagation.