I recently worked with Tracey Wasylik on a project studying the effect of Nitrogen release rates on St. Augustine performance. We were particularly interested in how the no-fertilization summer blackout period affected the study.
You can watch Tracey's seminar here:

Watch the seminar
Tracey is a part of the Soil and Water Science Department at the University of Florida's Ft. Lauderdale Research and Education Center.
About Dr. Raymond Snyder
Dr. Raymond Snyder is the Director of Agronomy at Harrell’s, LLC where he has worked since 2003. Dr. Snyder is a graduate of the University of Florida where he received his Ph.D. in Soil Science specializing in Soil Fertility and Fertilizers. He is responsible for investigating new product opportunities, proprietary product development, and providing technical sales support.