Section R68-4-8 - Certification and Grade Standards for Seed Potatoes(1) Requirements and standards for the certification and grading of seed potatoes are established and regulated by the Utah Crop Improvement Association, Utah Agricultural Experiment Station, Logan, Utah, 84322-4820.(2) Copies of seed certification requirements and standards can be obtained from the Utah Crop Improvement Association, Logan, Utah.Amended by Utah State Bulletin Number 2022-16, effective 8/1/2022