S.D. Codified Laws § 38-27-4
Current with legislation signed by the governor on or before 3/6/2024
The term of the members shall be for a period of four years, provided that the initial appointments shall be for staggered terms. If a member ceases to be a participating grower, the secretary of agriculture and natural resources shall declare the member's office vacant, and the secretary shall appoint a successor for the balance of the term of the office vacated.
SDCL 38-27-4