The board of supervisors of each county may expend monies from the general fund, not exceeding the amount that would be generated from the levy of a one-fourth (1/4) mill ad valorem tax upon all taxable property in the county, for the purpose of providing funds to be expended to establish, maintain and operate farmers' markets and facilities that are certified by the Mississippi Department of Agriculture and Commerce and operating within the county to assist in the disposal and sale of farm and other food products in the interest of farmers, consumers and the general public.