Dr. David Lalman is a professor and Extension Beef Cattle Specialist at Oklahoma State University. Dr. Lalman holds the Harrington Endowed Chair with split extension and research appointment. He works primarily in the beef cattle industry focused on cow/calf and stocker cattle production. His extension and applied research program includes beef cattle nutrition and management with emphasis on beef cattle grazing and genetic by environment interactions in beef production systems. His program goals are to provide producers with information and decision tools to facilitate production system profitability, improve cow herd efficiency and to improve product quality. At Oklahoma State, Dr. Lalman serves as the Animal Science Extension Program Coordinator and the supervisor for the Range Cow Research Center.