Mo. Rev. Stat. § 265.080

A certificate when not superseded by a finding on appeal, or a finding on appeal of the grade, classification, quality or condition of any agricultural product, issued under this chapter and all certificates issued under authority of the Congress of the United States relating to the grade, classification, quality or condition of agricultural products shall be accepted in any court of this state as prima facie evidence of the true grade, classification, condition or quality of such agricultural product at the time of its inspection.