S.D. Codified Laws § 38-12A-11
No person may sell, distribute, advertise, solicit orders for, offer for sale, expose for sale, or transport seed without first obtaining from the Department of Agriculture and Natural Resources a permit to engage in the business. No permit is required of any person selling or advertising seed of the person's own production in South Dakota, if the seed is stored or delivered to a purchaser only on or from the farm or premises where grown or the production and sale of seed is not a primary endeavor and primary source of income to such persons. Each permit shall expire on the thirty-first day of December of the year following the date of issue. The biennial fee for a seed permit is: Seedsman-- five hundred dollars; Seed producer-- seventy-five dollars; Seed dealer-- seventy-five dollars.
SDCL 38-12A-11