Grades of Potatoes for Chipping
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U.S. No. 1 Potatoes for Chipping consists of potatoes which meet the following requirements:
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Basic requirements:
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Similar varietal characteristics;
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firm;
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fairly clean;
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fairly well shaped.
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Free from:
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Freezing;
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blackheart;
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late blight tuber rot;
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southern bacterial wilt;
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bacterial ring rot;
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nuts of nut sedge;
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tuber moth injury;
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soft rot and wet breakdown.
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Free from damage by any other cause.
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Size. Not less than 1-7/8 inches (47.7 mm) in diameter, unless otherwise specified. See §51.4577.
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For tolerances see §51.4579.
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U.S. No. 2 Potatoes for Chipping consists of potatoes which meet the following requirements:
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Basic requirements:
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Similar varietal characteristics;
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fairly firm;
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not seriously damaged by dirt;
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not seriously misshapen.
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Free from:
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Freezing;
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blackheart;
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late blight tuber rot;
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southern bacterial wilt;
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bacterial ring rot;
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nuts of nut sedge;
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tuber moth injury;
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soft rot and wet breakdown.
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Free from serious damage by any other cause.
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Size. Not less than 1-3/4 inches (44.5 mm) in diameter, unless otherwise specified. See §51.4577.
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For tolerances see §51.4579.
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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 Potatoes for Chipping (pdf)
- Inspection Instructions for Potatoes for Chipping (pdf)
- 7 CFR 945 Irish Potatoes Grown In Certain Designated Counties in Idaho, and Malheur County, Oregon
- 7 CFR 948 Irish Potatoes Grown In Colorado
- 7 CFR 948 Irish Potatoes Grown In Southeastern States
- Importing Irish Potatoes
- Shipping Point and Market Inspection Instructions for Potatoes (pdf)
- Termination of Marketing Order for Irish Potatoes Grown in Washington State