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| Definitions | 51.1550 – 51.1565 | |||||||||||||||||||||||||||||||||||||||||||||||||
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35 FR 18258, Dec. 1, 1970, unless otherwise noted. Redesignated at 42 FR 32514, June 27, 1977, and further redesignated at 46 FR 63203, Dec. 31, 1981.
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Similar varietal characteristics means that the potatoes in any lot have the same general shape, color and character of skin, and color of flesh.
Firm means that the potato is not shriveled or flabby.
Clean means that at least 90 percent of the potatoes in any lot are practically free from dirt or staining and practically no loose dirt or other foreign matter is present in the container.
Fairly clean means that at least 90 percent of the potatoes in any lot are reasonably free from dirt or staining and not more than a slight amount of loose dirt or foreign matter is present in the container.
Mature means that the skins of the potatoes are generally firmly set and not more than 5 percent of the potatoes in the lot have more than one-tenth of the skin missing or “feathered.”
Fairly well matured means that the skins of the potatoes are generally fairly firmly set and not more than 10 percent of the potatoes in the lot have more than one-fourth of the skin missing or “feathered.”
Well shaped means that the potato has the normal shape for the variety.
Fairly well shaped means that the potato is not materially pointed, dumbbell-shaped or otherwise materially deformed.
Seriously misshapen means that the potato is seriously pointed, dumbell-shaped or otherwise badly deformed.
“Damage” means any defect, or any combination of defects, which materially detracts from the edible or marketing quality, or the internal or external appearance of the potato, or any external defect which cannot be removed without a loss of more than 5 percent of the total weight of the potato. See Tables III, IV, V and VI in § 51.1564 and Table VII in § 51.1565.
[76 FR 31789, June 2, 2011]
“Serious damage” means any defect, or any combination of defects, which seriously detracts from the edible or marketing quality, or the internal or external appearance of the potato, or any external defect which cannot be removed without a loss of more than 10 percent of the total weight of the potato. See Tables III, IV, V and VI in § 51.1564 and Table VII in 5§ 1.1565.
[76 FR 31789, June 2, 2011]
Freezing means that the potato is frozen or shows evidence of having been frozen.
Soft rot or wet breakdown means any soft, mushy, or leaky condition of the tissue such as slimy soft rot, leak, or wet breakdown following freezing injury.
External defects are defects which can be detected externally. However, cutting may be required to determine the extent of the injury. Some external defects are listed in Tables III, IV, V and VI.
| Defects | Damage | Serious damage1 |
|---|---|---|
| Air Cracks | When removal causes a loss of more than 5 percent of the total weight of the potato or when the air crack(s) affects more than 1⁄3 the length or diameter of the potato (whichever is greater) in the aggregate | When removal causes a loss of more than 10 percent of the total weight of the potato or when the air crack(s) affects more than 3⁄4 the length or diameter of the potato (whichever is greater) in the aggregate. |
| Artificial Coloring | When unsightly or when concealing any defect causing damage or when penetrating the flesh and removal causes loss of more than 5 percent of total weight of potato | When concealing a serious defect or when penetrating into the flesh and removal causes loss of more than 10 percent of total weight of potato. |
| Bruises (Not including pressure bruise and sunken discolored areas) | When removal causes a loss of more than 5 percent of the total weight of the potato or when the area affected is more than 5 percent of the surface in the aggregate (i.e., 3⁄4 inch on a 2 1⁄2 inch or 6 oz. potato). Correspondingly lesser or greater areas in smaller or larger potatoes | When removal causes a loss of more than 10 percent of the total weight of the potato or when the area affected is more than 10 percent of the surface in the aggregate (i.e., 11⁄4 inches on a 21⁄2 inch or 6 oz. potato). Correspondingly lesser or greater areas in smaller or larger potatoes. |
| Cuts | When one smooth cut affects more than 5 percent of the surface area | Cut(s) that affect more than 10 percent of the surface area in the aggregate or when a single side cut extends beyond 1⁄2 the length of the potato. |
| Dirt | When materially detracting from the appearance of the potato | When seriously detracting from the appearance of the potato. |
| Elephant Hide | When affecting over 10 percent of the surface area of the potato | When affecting over 25 percent of the surface area. |
| Enlarged Lenticels | When materially detracting from the appearance of the potato | When seriously detracting from the appearance of the potato. |
| External Discoloration (Areas that are light tan or lighter in color and blends should be ignored) | When more than 30 percent of the surface is affected by light tan or light brown colors which do not blend or when more than 15 percent of the surface is affected by colors darker than light tan or light brown | When more than 60 percent of the surface is affected by light tan or light brown colors which do not blend or when more than 30 percent of the surface is affected by colors darker than light tan or light brown. |
| Flattened or Depressed Areas/Pressure Bruises | When removal of underlying discolored flesh causes a loss of more than 5 percent of the total weight of the potato or when the flattened or depressed area(s) covers more surface area than allowed in Table IV. (See Table IV.) | When removal of underlying discolored flesh the causes a loss of more than 10 percent of the weight of the potato or when the flattened depressed area(s) covers more surface area than allowed in the Table IV. (See Table IV.) |
| Flea Beetle Injury | When materially detracting from the appearance or when removal causes a loss of more than 5 percent of the total weight of the potato or when the area affected is more than 5 percent of the surface in the aggregate | When seriously detracting from the appearance of the potato or when removal causes a loss of more than 10 percent of the weight of the potato or when the area affected is more than 10 percent of the surface in the aggregate. |
| Greening | When removal causes a loss of more than 5 percent of the total weight of the potato or when green color affects more than 25 percent of the surface in the aggregate | When removal causes a loss of more than 10 percent of the weight of the potato or when green color affects more than 50 percent of the surface in the aggregate. |
| Growth Cracks | When the growth crack(s) affects more than 1⁄2 the length of the potato in the aggregate on round varieties or more than 1⁄3 the length in the aggregate on long varieties; or, when the depth is greater than that as outlined in Table V. (See Table V.) | When the growth crack(s) affects more than 3⁄4 the length of the potato in the aggregate or when the depth is greater than that as outlined in Table V. (See Table V.). |
| Grub Damage | When removal causes a loss of more than 5 percent of the total weight of the potato or when affecting more than 5 percent of the surface area (i.e. more than 3⁄4 inch on a 2 1⁄2 inch or 6 ounce potato). Correspondingly lesser or greater areas in smaller or larger potatoes | When removal causes a loss of more than 10 percent of the total weight of the potato or when affecting more than 10 percent of the surface area (i.e. more than 11⁄4 inch on a 21⁄2 inch or 6 ounce potato). Correspondingly lesser or greater areas in smaller or larger potatoes. |
| Insects or Worms | (See Serious Damage.) | When present inside the potato. |
| Nematode (Root Knot) | When removal causes loss of more than 5 percent of total weight of potato | When removal causes loss of more than 10 percent of total weight of potato. |
| Rhizoctonia | When affecting more than 15 percent of the surface in the aggregate | When affecting more than 50 percent of the surface in the aggregate. |
| Russeting (On Non Russet Type) | When more than 50 percent of the surface is affected in the aggregate | N/A. |
| Rodent or Bird Damage | When removal causes a loss of more than 5 percent of the total weight of the potato or when affecting more than 5 percent of the surface area (i.e. more than 3⁄4 inch on a 2 1⁄2 inch or 6 ounce potato). Correspondingly lesser or greater areas in smaller or larger potatoes | When removal causes a loss of more than 10 percent of the total weight of the potato or when affecting more than 10 percent of the surface area (i.e. more than 11⁄4 inch on a 21⁄2 inch or 6 ounce potato). Correspondingly lesser or greater areas in smaller or larger potatoes. |
| Scab, Pitted | When removal causes a loss of more than 5 percent of the total weight of the potato or when scab affects an aggregate area of more than 1⁄2 inch. (Based on a potato 2 1⁄2 inches in diameter or 6 oz. in weight.) Correspondingly lesser or greater areas in smaller or larger potatoes | When the removal causes a loss of more than 10 percent of the total weight of the potato or when scab affects an aggregate area of more than 1 inch. (Based on a potato 21⁄2 inches in diameter or 6 oz. in weight.) Correspondingly lesser or greater areas in smaller or larger potatoes. |
| Scab, Russet | Smooth and affecting more than 1⁄3 of the surface or rough russet scab which affects more than 10 percent of the surface in the aggregate | Rough and affecting more than 25 percent of the surface in the aggregate. |
| Scab, Surface | When more than 5 percent of the surface in the aggregate is affected | When more than 25 percent of the surface in the aggregate is affected. |
| Second Growth | When materially detracting from the appearance of the potato | When seriously detracting from the appearance of the potato. |
| Silver Scurf | When affecting more than 50 percent of the surface area of the potato | When its severity causes a wrinkling of the skin over more than 50 percent of the surface. |
| Sprouts | When more than 5 percent of the potatoes in any lot have any sprout more than 1⁄4 inch in length at shipping point; more than 1⁄2 inch in length at destination; or have numerous individual and/or clusters of sprouts which materially detract from the appearance of the potato | When more than 10 percent of the potatoes in any lot have any sprout more than 1⁄2 inch in length at shipping point; more than 1 inch in length at destination; or have numerous individual and/or clusters of sprouts which seriously detract from the appearance of the potato. Serious damage by sprouts shall only be scored against the U.S. Commercial and U.S. No. 2 grades. |
| Sunburn | When removal causes loss of more than 5 percent of total weight of potato | When removal causes loss more than 10 percent of total weight of potato. |
| Sunken Discolored Areas | SEE TABLE VI | SEE TABLE VI. |
| Surface Cracks (Areas affected by fine net-like cracking should be ignored.) | When smooth shallow cracking affects more than 1⁄3 of the surface or when rough deep cracking affects more than 5 percent of the surface | When rough deep cracking affects more than 10 percent of the surface. |
| Wireworm or Grass Damage | When affecting the flesh of the potato and removal causes loss of more than 5 percent of total weight of potato. | When affecting the flesh of the potato and removal causes loss of more than 10 percent of total weight of potato. |
| The following defects are considered serious damage when present in any degree: 1. Freezing. 2. Late blight. 3. Ring rot. 4. Southern bacterial wilt. 5. Soft rot. 6. Wet breakdown. | ||
| Diameter | Weight | No. 1 (aggregate area) |
No. 2 (aggregate area) |
|---|---|---|---|
| Potato is: | Potato is: | Not more than: | Not more than: |
| Less than 2 in | Less than 4 oz | 1⁄2 in | 1 in |
| 2 to 21⁄2 in | 4 to 6 oz | 1 in | 11⁄2 in |
| More than 21⁄2 to 3 in | More than 6 to 8 oz | 11⁄4 in | 13⁄4 in |
| More than 3 to 31⁄2 in | More than 8 to 14 oz | 11⁄2 in | 17⁄8 in |
| More than 31⁄2 to 4 in | More than 14 to 20 oz | 13⁄4 in | 2 in |
| More than 4 to 41⁄2 in | More than 20 to 28 oz | 2 in | 21⁄4 in |
| More than 41⁄2 to 5 in | More than 28 to 36 oz | 21⁄4 in | 23⁄4 in |
| More than 5 in | More than 36 oz | 21⁄2 in | 31⁄4 in |
| Diameter | Weight | No. 1 (depth) |
No. 2 (depth) |
|---|---|---|---|
| Potato is: | Potato is: | Not more than: | Not more than: |
| Less than 2 in | Less than 4 oz | 1⁄8 in | 1⁄4 in |
| 2 to 21⁄2 in | 4 oz to 6 oz | 1⁄4 in | 3⁄8 in |
| More than 21⁄2 to 3 in | More than 6 oz to 8 oz | 3⁄8 in | 1⁄2 in |
| More than 3 in | More than 8 oz | 1⁄2 in | 5⁄8 in |
| Diameter | Weight | No. 1 (aggregate area) |
No. 2 (aggregate area) |
|---|---|---|---|
| Potato is: | Potato is: | Not more than: | Not more than: |
| Less than 2 in | Less than 4 oz | 3⁄8 in | 3⁄4 in |
| 2 to 21⁄2 in | 4 to 6 oz | 3⁄4 in | 1 in |
| More than 21⁄2 to 3 in | More than 6 to 8 oz | 1 in | 11⁄4 in |
| More than 3 to 31⁄2 in | More than 8 to 14 oz | 11⁄4 in | 11⁄2 in |
| More than 31⁄2 to 4 in | More than 14 to 20 oz | 11⁄2 in | 13⁄4 in |
| More than 4 to 41⁄2 in | More than 20 to 28 oz | 13⁄4 in | 2 in |
| More than 41⁄2 to 5 in | More than 28 to 36 oz | 2 in | 21⁄4 in |
| More than 5 in | More than 36 oz | 21⁄4 in | 21⁄2 in |
[35 FR 18258, Dec. 1, 1970, as amended at 73 FR 15055, Mar. 21, 2008; 73 FR 70586, Nov. 21, 2008; 76 FR 31789, June 2, 2011]
Internal defects are defects which cannot be detected without cutting the potato. Some internal defects are listed in Table VII.
| Defects | Damage Maximum Allowed | Serious Damage Maximum Allowed |
|---|---|---|
| Occurring outside of or not entirely confined to the vascular ring | ||
| Ingrown Sprouts, Internal Discoloration, Vascular Browning, Fusarium Wilt, Net Necrosis, Other Necrosis, Stem End Browning | 5 percent waste | 10 percent waste. |
| Internal Black Spot | When the spot(s) are darker than the official color chip (POT-CC-2) after removing 5 percent of the total weight of the potato | When the spot(s) are darker than the official color chip (POT-CC-2) after removing 10 percent of the total weight of the potato. |
| Occurring entirely within the vascular ring | ||
| Hollow Heart or Hollow Heart with Discoloration | Area affected not to exceed that of a circle 1⁄2 inch in diameter in a potato 2 1⁄2-inches in diameter or 6 ounces in weight. 1 | Area affected not to exceed that of a circle 3⁄4 inch in diameter in a potato 2 1⁄2-inches in diameter or 6 ounces in weight. 1 |
| Light Brown Discoloration (Brown Center) | Area affected not to exceed that of a circle 1⁄2 inch in diameter in a potato 2 1⁄2 inches in diameter or 6 ounces in weight. 1 | Area affected not to exceed that of a circle 3⁄4 inch in diameter in a potato 2 1⁄2 inches in diameter or 6 ounces in weight. 1 |
| Occurring entirely within the vascular ring | ||
| Internal Brown Spot and Similar Discoloration (Heat Necrosis) | Not more than the equivalent of 3 scattered spots 1⁄8 inch in diameter in a potato 2 1⁄2-inches in diameter or 6 ounces in weight. 1 | Not more than the equivalent of 6 scattered spots 1⁄8 inch in diameter in a potato 2 1⁄2-inches in diameter or 6 ounces in weight. 1 |
| 1 Note: Correspondingly lesser or greater areas in smaller or larger potatoes. | ||
[35 FR 18258, Dec. 1, 1970. Redesignated at 42 FR 32514, June 27, 1977, and further redesignated at 46 FR 63203, Dec. 31, 1981; amended at 56 FR 7553, Feb. 25, 1991; 56 FR 10302, Mar. 11, 1991; 73 FR 15058, Mar. 21, 2008 ; 73 FR 70586, Nov. 21, 2008; 76 FR 31789, June 2, 2011]