The standards for grades adopted by the U.S. Department of Agriculture, U.S. Standards for Grades of Bermuda-Granex-Grano Type Onions, effective January 1, 1960, as amended March 18, 1962, and February 20, 1985, (7 CFR 51.3195-51.3209), December 31, 1981, and U.S. Standards for Grades of Common Green Onions (7 CFR 51.1055-51.1071) December 31, 1981, are adopted and shall be the standards for grades in this state, except that the Commissioner may establish tolerances or allowable percentages of U.S. Standards each season upon the recommendation of the Vidalia Onion Committee.