# The Seed Potatoes (Scotland) Regulations 2000, Paragraph 4


Seed potatoes shall not be classified–
(a) as Pre-basic TC seed potatoes, if the immediately succeeding crop produced from those potatoes is likely to contain–
(i) plants of another variety; or
(ii) virus affected plants;
(b) as Pre-basic 1 or Pre-basic 2 seed potatoes, if, in relation to the immediately succeeding crop produced from those potatoes, the number of growing plants which–
(i) deviate from variety and type, is likely to exceed 0.01% of the total number of plants in that crop; or
(ii) show symptoms of mild or severe virus diseases attributable to infection in the mother crop, is likely to exceed 0.01% of that total number; or
(c) as basic seed potatoes, if, in relation to the immediately succeeding crop produced from those potatoes, the number of growing plants which–
(i) deviate from variety, is likely to exceed 0.1% of the total number of plants in that crop;
(ii) deviate from variety and type, is likely to exceed 0.25% of that total number; or
(iii) show symptoms of mild or severe virus diseases attributable to infection in the mother crop, is likely to exceed 4% of that total number.

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Source: https://www.legislation.gov.uk/ssi/2000/201/schedule/1/paragraph/4 (the official version)
Page: https://openlegislation.uk/seed-potatoes-scotland-regulations-2000/schedule-1/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.