This section applies to all counties, except Baltimore City. Under rules it adopts, the governing body of a county may appropriate and use money it considers necessary to support farmers’ cooperative demonstration work in the county, including home demonstration work and boys and girls club work, that is similar to work that the United States Department of Agriculture or the University of Maryland Cooperative Extension may conduct. The governing body of a county may cooperate with the United States Department of Agriculture and the University of Maryland Cooperative Extension to jointly conduct and fund the demonstration work on terms and conditions agreed to by the governing body of the county, the Department, and the Extension.