For the purpose of encouraging the organization and maintenance of farmers’ institute societies, farm bureaus, farmers’ clubs, country life clubs, or other organizations which have for their purpose the development of the agricultural resources of a county by holding farmers’ institutes or short course studies in agriculture held in cooperation with the state department of agriculture or the college of agriculture, or other constituted authority that may now or hereafter be authorized by law to conduct such meetings, the county commission of any county in this state having a population of less than one hundred thousand inhabitants may and is hereby empowered to appropriate from the county revenue a sum not to exceed a total of one hundred dollars per annum for such purpose.