SDCL § 38-19A-2: Distribution of adulterated soil amendments prohibited--Adulteration defined.

No person shall distribute an adulterated soil amendment. A soil amendment shall be deemed to be adulterated if it contains any deleterious or harmful agent in sufficient amount to render it injurious to beneficial plant, animal or aquatic life when applied in accordance with directions for use on the label or if it contains unwanted crop or weed seed.