As used in sections 266.361 to 266.400, the following words and terms shall be defined as indicated:
(1) "Person" includes individuals, partnerships, associations, firms, corporations, estates, trusts, trustees, or receivers.
(2) "Soil conditioner" means any substance added to the soil or applied to plants other than fertilizers regulated under the provisions of sections 266.291 to 266.351, economic poisons registered under the provisions of sections 263.270 to 263.380 and any substance which is sold to the consumer at a price of less than ten dollars per ton.