# Commission Implementing Directive 2014/21/EU of 6 February 2014 determining minimum conditions and Union grades for pre-basic seed potatoes (Text with EEA relevance), Article 3: Minimum conditions for lots of pre-basic seed potatoes

Extent: E+W+S+N.I.

Member States shall provide that lots of pre-basic seed potatoes shall satisfy the following minimum conditions:
(a) presence of earth and extraneous matter shall not exceed 1,0 % by mass;
(b) the number of potatoes affected by rots, other than ring rot or brown rot, shall not be present in a quantity exceeding 0,2 % by mass;
(c) the number of potatoes with external blemishes, including misshapen or damaged tubers, shall not exceed 3,0 % by mass;
(d) the number of potatoes affected by common scab over more than one third of their surface shall not exceed 5,0 % by mass;
(e) shrivelled tubers due to excessive dehydration or dehydration caused by silver scurf shall not exceed 0,5 % by mass;
(f) lots of pre-basic seed potatoes shall comply with the following requirements concerning the presence of RNQPs, or diseases caused by the respective RNQPs as set out in the table:
RNQPs or symptoms caused by RNQPs
Threshold for the presence of RNQPs on the lots of pre-basic seed potato
Candidatus Liberibacter solanacearum Liefting et al . [LIBEPS]
0 %
Ditylenchus destructor Thorne [DITYDE]
0 %
Black scurf affecting tubers over more than 10 % of their surface as caused by Thanatephorus cucumeris (A.B. Frank) Donk [RHIZSO]
1,0 %
Powdery scab affecting tubers over more than 10 % of their surface as caused by Spongospora subterranea (Wallr.) Lagerh. [SPONSU]
1,0 %
(g) the total number of potatoes, as referred to in points (b) to (f), shall not exceed 6,0 % by mass.

---
Source: https://www.legislation.gov.uk/eudr/2014/21/article/3 (the official version)
Page: https://openlegislation.uk/eu-directive-2014-21/article-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.