{"data":{"id":"us/7-cfr-51.3416","jurisdiction":"us","citation":"7 CFR 51.3416","heading":"Classification of defects.","body":"External Defects\nDefects Maximum allowed for U.S. No. 1 processing Maximum allowed for U.S. No. 2 processing\nAir cracks 5% waste 10% waste.\nBlackleg 5% waste 10% waste.\nBruises 5% waste 10% waste\nCuts Smooth, not more than 10% of surface Smooth, not more than 1⁄3 of surface.\nEnlarged lenticels, discolored or sunken 5% waste 10% waste.\nFlea Beetle 5% waste 10% waste\nFolded end 5% waste 10% waste.\nFusarium tuber rot 5% waste 10% waste.\nGrass, wireworm 5% waste 10% waste.\nGreening, light 5% waste 10% waste.\nGrowth cracks See Footnote No. 2 10% waste.\nGrub 5% waste 10% waste.\nIngrown sprouts 5% waste 10% waste.\nNematodes 5% waste 10% waste.\nRhizoctonia, solid or thick mounded Not more than 10% of surface Not more than 25% of surface.\nRodent, bird damage 5% waste 10% waste.\nScab, pitted 5% waste 10% waste.\nScab, russet 25% of surface or 5% waste 50% of surface or 10% waste.\nScab, surface 25% of surface or 5% waste 50% of surface or 10% waste.\nScab, surface (elephant hide). 10% of surface or 5% waste 25% of surface or 10% waste.\nSecond growth 5% waste 10% waste.\nScaling, surface cracks—when cracked, thick and has depth 10% of surface or 5% waste 25% of surface or 10% waste.\nSunburn 5% waste 10% waste.\nSunken discolored areas 5% waste 10% waste.\nInternal Defects\nDefects Maximum allowed for U.S. No. 1 processing Maximum allowed for U.S. No. 2 processing\nOccurring outside of or not entirely confined to the vascular ring\nInternal Black Spot, Internal Discoloration, Vascular Browning, Fusarium Wilt, Net Necrosis, Other Necrosis, Stem End Browning 5% waste 10% waste.\nOccurring entirely within the vascular ring\nHollow Heart or Hollow Heart with Discoloration Area affected not to exceed that of a circle 7⁄8 inch in diameter in a 10 ounce potato. 1 Area affected not to exceed that of a circle 11⁄4 inches in diameter in a 10 ounce potato. 1\nLight Brown Discoloration (Brown Center) Area affected not to exceed that of a circle 7⁄8 inch in diameter in a 10 ounce potato. 1 Area affected not to exceed that of a circle 11⁄4 inches in diameter in a 10 ounce potato. 1\nInternal Brown Spot and similar discoloration (Heat Necrosis) Not more than the equivalent of 3 scattered spots 1⁄8 inch in diameter in a potato 6 ounces in weight or 21⁄2 inches in diameter, or correspondingly lesser or greater number of spots in smaller or larger potatoes Not more than the equivalent of 6 scattered spots 1⁄8 inch in diameter in a potato 6 ounces in weight or 21⁄2 inches in diameter or correspondingly lesser or greater number of spots in smaller or larger potatoes.\n1 Note: Or correspondingly lesser or greater areas in smaller or larger potatoes.","path":["Title 7—Agriculture","Subtitle B—Regulations of the Department of Agriculture","CHAPTER I—AGRICULTURAL MARKETING SERVICE (STANDARDS, INSPECTIONS, MARKETING PRACTICES), DEPARTMENT OF AGRICULTURE","SUBCHAPTER C—REQUIREMENTS AND STANDARDS UNDER THE AGRICULTURAL MARKETING ACT OF 1946 AND THE EGG PRODUCTS INSPECTION ACT","PART 51—FRESH FRUITS, VEGETABLES, AND OTHER PRODUCTS (INSPECTION, CERTIFICATION, AND STANDARDS)","Subpart JJ—United States Standards for Grades of Potatoes for Processing"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-7.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:01Z","sha256":"0d3386fd2fcf0a83c486847dd7b3b3b671338430965764abd3a2bbf684dda74c","source_id":"us-cfr","stale":true,"prev":"us/7-cfr-51.3415","next":"us/7-cfr-51.3417"},"notice":"GroundRules: Original legal text. Not legal advice."}