Ohio Revised Code Title IX. Agriculture Animals Fences § 903.40

(A) No person, for the purposes of agricultural production as defined in section 905.31 of the Revised Code, shall apply manure obtained from a concentrated animal feeding facility issued a permit under this chapter unless one of the following applies:

(B) The director shall issue, renew, and deny certifications for the purposes of division (A)(2) of this section in the manner established in sections 905.321 and 905.322 of the Revised Code and rules adopted under the latter section for the certification of fertilizer applicators. Procedures, requirements, and other provisions that are established in those sections and rules apply to the certification of persons under division (A)(2) of this section. For purposes of that application, references in sections 905.321 and 905.322 of the Revised Code to “fertilizer” are deemed to be replaced with references to “manure.”