Potatoes
10. Sprouts

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Sprouts are the result of eyes on the potato actually beginning to grow. They sometimes occur singularly or in clusters. Their length varies according to what stage of growth they are in, and progress rapidly at non-refrigerated temperatures. Growth generally begins opposite the stem end of the potato.

10.1 Sprouts (External) (C)

External sprouts are scored when:

A) Canada No. 1

Not more than 5% of the potatoes in the lot may have individual or clusters of sprouts where:

  1. the length exceeds 6 mm (¼ inch) at Shipping Point or Repacking;
  2. the length exceeds 12 mm (½ inch) at Destination.

B) Canada No. 2

Not more than 10% of the potatoes in the lot may have individual or clusters of sprouts where:

  1. the length exceeds 12 mm (½ inch) at Shipping Point or Repacking;
  2. the length exceeds 25 mm (1 inch) at Destination.

Visual Aids Refer to photo 136 (USDA).

10.2 Sprouts (Internal) (P)

Ingrown sprouts are sprouts that have actually grown back into the flesh of the potato. There is usually obvious indication of some abnormal sprout growth on the outside of the tuber which will reveal internal growth upon taking an exploratory cut.

Internal sprouts are scored when:

A) Canada No. 1

  1. they cannot be removed without a loss of more than 5% of the weight of a potato.

B) Canada No. 2

  1. they cannot be removed without a loss of more than 10% of the weight of a potato.

Visual Aids Refer to photos 60 & 61 (USDA).

Note: This defect should be scored against the tolerance for internal defects. This defect should not be included in the lot tolerance for sprouts.

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