There shall be held prior to April 1 of each year, a meeting of the State Board of Agriculture, together with the president of each county society, or delegate therefrom duly authorized, who shall for the time being be ex officio members of the State Board of Agriculture, for the purpose of deliberating and consulting as to the wants, prospects, and conditions of the agricultural interests throughout the state. Such meeting shall be held in every odd-numbered year at the capital of the state, and in every even-numbered year at such location as the board may determine. At such annual meeting the several reports from the subordinate societies shall be delivered to the president of the board. The president and delegates shall at this meeting elect suitable persons to fill all vacancies in the board. The president shall also have the power to call meetings of the board whenever he or she may deem it expedient. The state fair shall be held at or near the city of Lincoln, in Lancaster County, under the direction and supervision of the State Board of Agriculture, upon the site and tract of land, selected and now owned by the state for that purpose and known as the state fairgrounds. The board may, at its discretion, hold or dispense with the holding of the fair, in any year.