Except for matters which have been expressly delegated to another state agency, the State Board of Agriculture shall be the official agency of the State of Oklahoma in the relations of this state with the United States Department of Agriculture, any other federal agency, or any agency or person of this or another state on matters pertaining to sampling, inspection, and grading of agricultural products, and other regulatory matters in the field of agriculture.
Okla. Stat. tit. 2, § 2-5