The board shall have the authority to refuse to grant a license to an applicant, to revoke the license of a person licensed by the board, or to discipline a person licensed by the board upon a finding by a majority of the board that the licensee or applicant has violated the provisions of Code Section 43-1-19. The board shall have the authority to adopt, by regulation, a code of professional ethics for foresters and thereby define unethical conduct or practice by applicants or licensees of the board for purposes of Code Section 43-1-19.