# The Seed Potatoes (Wales) Regulations 2016, Paragraph 5


No growing crop certificate may be issued containing a statement that seed potatoes are capable of being marketed as pre-basic seed potatoes of GB grade PBTC unless the authorised officer is satisfied that the immediately succeeding crop produced from the seed potatoes is not likely to contain—
(a) plants of a different variety; or
(b) plants affected by mild or severe virus.

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Source: https://www.legislation.gov.uk/wsi/2016/106/schedule/1/paragraph/5 (the official version)
Page: https://openlegislation.uk/seed-potatoes-wales-regulations-2016/schedule-1/paragraph-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.