Graybill has been in his current position as Agronomy Educator for Penn State Extension in Lancaster county since 2005. His areas of program emphasis include hemp production and harvest in Central Pennsylvania. As an extension educator, he works with local hemp farmers to aid them in permitting, establishment, production, and the harvesting of their crop. He has coordinated several large hemp field days at the Penn State research farm in Lancaster County.
Graybill’s other areas of emphasis include, no-till cropping systems, soil health and fertility, herbicide use and safety, and technology traits in field crops.