The General Assembly hereby finds and declares that it is in the public interest that the State regulate the activities of those persons engaged in the business of preparing, or manufacturing agricultural liming material and landplaster in order to insure the manufacturer, distributor, and consumer of the correct quantity and quality of all said materials sold or offered for sale in this State. It shall therefore be the policy of this State to regulate the activities of those persons engaged in the business of preparing or manufacturing agricultural liming material and landplaster. (1979, c. 590.)