Seeds Regulations (C.R.C., c. 1400)

Elite IV

• 47.6 (1) Elite IV seed potatoes shall be

  • (a) produced from Elite III or a higher class of seed potatoes; and

  • (b) inspected by an inspector at least two times during the growing season.

• (2) Elite IV seed potatoes shall be given the status of field generation 5 if the crop is produced in the field for the fifth time.

• (3) The percentage of plants showing visible varietal mixture or visible symptoms of disease set out in column 1 of an item of the table to this section on the first inspection, any subsequent inspection and the final inspection shall not exceed the applicable percentages set out in columns 2 and 3 of that item.

  	Column 1	Column 2	Column 3
  Item	Disease or Varietal Mixture	Percentage on First or any Subsequent Inspection	Percentage on Final Inspection
  1	PSTV	0	0
  2	Bacterial ring rot	0	0
  3	Total of all viruses	0.6	0.3
  4	Total of blackleg and wilts	0.5	0.5
  5	Varietal mixtures	0.2	0.1

Foundation

• 47.7 (1) Foundation seed potatoes shall be

  • (a) produced from Elite IV or a higher class of seed potatoes; and

  • (b) inspected by an inspector at least two times during the growing season.

• (2) Foundation seed potatoes shall be given the status of field generation 6 if the crop is produced in the field for the sixth time.

• (3) The percentage of plants showing visible varietal mixture or visible symptoms of disease set out in column 1 of an item of the table to this section on the first inspection, any subsequent inspection and the final inspection shall not exceed the applicable percentages set out in columns 2 and 3 of that item.

  	Column 1	Column 2	Column 3
  Item	Disease or Varietal Mixture	Percentage on First or any Subsequent Inspection	Percentage on Final Inspection
  1	PSTV	0	0
  2	Bacterial ring rot	0	0
  3	Total of all viruses	1	0.5
  4	Total of blackleg and wilts	1	1
  5	Varietal mixtures	0.4	0.2

Certified

• 47.8 (1) Certified seed potatoes shall be

  • (a) produced from Foundation or a higher class of seed potatoes; and

  • (b) inspected by an inspector at least two times during the growing season.

• (2) Certified seed potatoes shall be given the status of field generation 7 if the crop is produced in the field for the seventh time.

• (3) The percentage of plants showing visible varietal mixture or visible symptoms of disease set out in column 1 of an item of the table to this section on the first inspection, any subsequent inspection and the final inspection shall not exceed the applicable percentages set out in columns 2 and 3 of that item.

  	Column 1	Column 2	Column 3
  Item	Disease or Varietal Mixture	Percentage on First or any Subsequent Inspection	Percentage on Final Inspection
  1	PSTV	0	0
  2	Bacterial ring rot	0	0
  3	Total of all viruses	3	2
  4	Total of blackleg and wilts	3	2
  5	Varietal mixtures	1	0.5

Tuber Grade Sizes

• 48 (1) All documentation for any quantity of graded seed potatoes, whether in containers or in bulk, shall specify, in millimetres, the minimum and maximum size of the graded tubers.

• (2) Subject to subsection (3), that specification of minimum and maximum size shall be in accordance with the following:

  • (a) the minimum size shall not be less than 30 mm; and

  • (b) the maximum size shall not be greater than 70 mm for long type varieties or 80 mm for round type varieties.

• (3) If a grower or supplier of graded seed potatoes has an agreement with a purchaser for the purchase of graded seed potatoes from the grower or supplier,

  • (a) the agreement shall state the quantity of graded seed potatoes to be purchased as well as their minimum and maximum sizes, which may be different from the minimum and maximum sizes set out in subsection (2); and

  • (b) the minimum and maximum sizes stated in the agreement may be used on all seed potato tags and records of bulk movement to denote the size for the graded seed potatoes.

• (4) Any quantity of seed potatoes supplied under the agreement shall be sorted and graded by the grower or supplier, and at least 95% of the tubers by weight must be within the minimum and maximum sizes set out in subsection (3).

• (5) Nuclear Stock seed potatoes and Breeder’s Selection seed potatoes are exempt from the requirements in subsection (1).

Standards for Tubers

• 48.1 (1) Seed potatoes of a class established in section 47 shall meet the standards prescribed in subsection (2).

• (2) The percentage of tubers in any lot showing symptoms of any disease or defect set out in Column I of an item of the table to this subsection shall not, at the point of shipping, exceed the percentage set out in Column II of that item and shall not, at destination, exceed the percentage set out in Column III of that item.

  	Column I	Column II	Column III
  Item	Disease or Defect	Percentage by Count at Shipping Point	Percentage by Count at Destination
  1	Soft rot or wet breakdown	0.1	0.5
  2	Dry rot, including late blight	1.0	1.0
  3	Scab and Rhizoctonia combined
  	(a) light	10.0	10.0
  	(b) moderate	5.0	5.0
  4	Stem-end discolouration due to top-killing, frost, heat or drought, with penetration from 6 to 13 mm	4.0	4.0
  5	Malformed and damage	2.0	3.0

• (3) For the purposes of the table to subsection (2),

  light Rhizoctonia

  light Rhizoctonia means that 1 to 5 per cent of the tuber surface is covered with Rhizoctonia sclerotia; (rhizoctonie légère)

  light scab

  light scab means that 1 to 5 per cent of the tuber surface is covered with common scab lesions; (gale légère)

  moderate Rhizoctonia

  moderate Rhizoctonia means that 5 to 10 per cent of the tuber surface is covered with Rhizoctonia sclerotia; (rhizoctonie modérée)

  moderate scab

  moderate scab means that 5 to 10 per cent of the tuber surface is covered with common scab lesions. (gale modérée)

• (4) In any lot, the number of tubers that are affected by light and moderate scab and Rhizoctonia combined shall not exceed 10 per cent of the total number of tubers in the lot.

• (5) [Repealed, SOR/2002-198, s. 4]

• (6) The percentage of tubers found in a lot of any class that is of a variety other than the variety of which the lot generally consists shall not exceed the percentage permitted by sections 47.11 to 47.8 for that class.

• (7) In any lot, the number of tubers in the aggregate that are affected by disease and defects, not including light scab, light Rhizoctonia and stem-end discolouration, shall not exceed 5 per cent of the total number of tubers in the lot.

• (8) At the point of shipping, not more than 5 per cent of tubers in a lot shall be affected by pressure bruising on over 10 per cent of their surface.

• (9) At the point of shipping, not more than 10 per cent of the tubers in a lot shall have sprouts longer than 2 cm.

• (10) In any lot, at least 98 per cent of tubers shall be firm and well shaped.

• (11) No tubers in any lot shall be washed.