Md. Code, Agriculture § 8–803.2

(a) A person who applies nutrients for hire to land used for agricultural purposes shall be a certified nutrient management consultant or work under a nutrient management consultant certified under § 8-803 of this subtitle.

(b) A person who applies nutrients for hire to land used for agricultural purposes, who is not a certified nutrient management consultant, shall make available documentation, in the form of a work order, bill of lading, or similar document, to the landowner or land manager that the person is working under a certified nutrient management consultant.

(c) The Secretary shall adopt regulations to implement this section.