S.D. Codified Laws § 38-1-18
The Department of Agriculture and Natural Resources shall have power to encourage, protect, and promote, in every practical manner, the interests of agriculture, including horticulture, the livestock industry, dairying, cheese making, poultry, beekeeping, forestry, game and fish, the production of wool and all other allied industries; to promote methods of conducting these several industries, with a view of increasing the production and facilitating the distribution thereof at the least possible cost; cooperate with the South Dakota State University in its experimental and extension work; and to promote and encourage a system of marketing farm products, and cooperate with the federal government in the matter of securing new foreign markets for surplus farm products.
SDCL 38-1-18