N.C. Gen. Stat. § 89G-2

Except as otherwise provided in this Chapter, no person shall engage in the practice of irrigation construction or irrigation contracting, use the designation "irrigation contractor," or advertise using any title or description that implies licensure as an irrigation contractor unless the person is licensed as an irrigation contractor as provided by this Chapter. All irrigation construction or irrigation contracting performed by an individual, partnership, association, corporation, firm, or other group shall be under the direct supervision of an individual licensed by the Board under this Chapter.