View all text of Subjgrp 578 [§ 51.1550 - § 51.1565]
§ 51.1565 - Internal defects.
Internal defects are defects which cannot be detected without cutting the potato. Some internal defects are listed in Table VII.
Table VII—Internal Defects
| Defects | Damage Maximum Allowed | Serious Damage Maximum Allowed | 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. | 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 | 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 |
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1Note: Correspondingly lesser or greater areas in smaller or larger potatoes.