Tenn. Code Ann. § 62-18-212

Any applicant may, in the absence of disqualifying evidence, be deemed by the commissioner to be fully qualified to practice soil science if such applicant holds a like, unexpired certificate of registration issued to the applicant after examination by proper authority in the District of Columbia or in any state or territory in the United States in which the examination and requirements for the registration of soil scientists are of a standard satisfactory to the commissioner.