- U.S. No. 1 consists of sweetpotatoes of similar type which are firm, not badly misshapen, free from soft rot, black rot, cull material, freezing injury, scald, cork or other internal discoloration, and free from damage, caused by dry rot other than black rot, other diseases, bruises, cuts, growth cracks, pithiness, wireworm, weevil, other insects, stringiness, sunburn, mechanical or other means. (See §§51.1688 and 51.1689.)
- U.S. No. 2 consists of sweetpotatoes of similar type which are firm, free from soft rot, black rot, cull material, freezing injury, and free from serious damage caused by dry rot other than black rot, other diseases, bruises, cuts, cork or other internal discoloration, growth cracks, pithiness, scald, wireworm, weevil, other insects, stringiness, sunburn, mechanical or other means. (See §§51.1688 and 51.1689.)
Visual Aids
Official Visual Aids are available for Purchase. See How to Purchase Visual Aids for more details.
Detailed standards, Inspection Instructions & Other Resources:
- U.S. Grade Standards for Sweetpotatoes for Dicing or Pulping (pdf)
- Inspection Instructions for Sweetpotatoes for Processing (pdf)