Tennessee Code Title 62. Professions, Businesses and Trades § 62-18-206

(1) Any person engaged solely in teaching the science of soil science or engaged solely in nonpublic soils research in this state. However, a teacher or researcher shall be certified as licensed professional soil scientist if the teacher or researcher wishes to engage in the practice of soil science or services for which licensure as a soil scientist is required by this part;

(2) An employee or subordinate of a licensed professional soil scientist insofar as the employee or subordinate acts solely in such capacity. This exemption shall not permit any such employee or subordinate to practice soil science independently or use the term “licensed professional soil scientist;” and

(3) Any person who is employed either by the state or federal government, or by a person, firm, or corporation not engaged in the practice of soil science, if such person provides soil science services only as part of his job duties for the employer and does not receive any payments for soil science services from the general public.