{
  "url": "https://openlegislation.uk/eu-directive-2014-21/annex",
  "json_url": "https://openlegislation.uk/eu-directive-2014-21/annex.json",
  "legislation": "eudr/2014/21",
  "legislation_title": "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)",
  "legislation_url": "https://openlegislation.uk/eu-directive-2014-21",
  "path": "annex",
  "kind": "annex",
  "number": null,
  "heading": "Conditions for placing on the market of pre-basic seed potatoes as Union grades PBTC and PB",
  "text": "(1) The conditions for pre-basic seed potatoes of Union grade PBTC shall be as follows:\n(a) conditions concerning seed potatoes:\n(i) plants not breeding true to the variety, or plants of a different variety, shall not be present in the crop;\n(ii) plants, including tubers, are produced through micro-propagation;\n(iii) plants, including tubers, are produced in a protected facility and in a growing medium which is free from pests;\n(iv) tubers shall not be multiplied beyond the first generation;\n(v) plants shall comply with the following thresholds concerning the presence of RNQPs, or symptoms caused by the respective RNQP, as set out in the following table:\nRNQPs or symptoms caused by RNQPs\nThreshold for the presence of RNQPs on the growing plants for pre-basic seed potatoes of Union grade PBTC\nBlackleg ( Dickeya Samson et al . spp. [1DICKG]; Pectobacterium Waldee emend. Hauben et al . spp. [1PECBG])\n0 %\nCandidatus Liberibacter solanacearum Liefting et al . [LIBEPS]\n0 %\nCandidatus Phytoplasma solani Quaglino et al . [PHYPSO]\n0 %\nMosaic symptoms caused by viruses\nand\nsymptoms caused by Potato leaf roll virus [PLRV00]\n0 %\nPotato spindle tuber viroid [PSTVD0]\n0 %\nRNQPs or symptoms caused by RNQPs\nThreshold for the presence of RNQPs on the direct progeny of pre-basic seed potatoes of Union grade PBTC\nSymptoms of virus infection\n0 %.\n(b) conditions concerning lots:\n(i) they shall be free from seed potatoes affected by rots;\n(ii) they shall be free from seed potatoes affected by common scab;\n(iii) they shall be free from seed potatoes excessively shrivelled due to dehydration;\n(iv) they shall be free from seed potatoes with external blemishes, including misshapen or damaged tubers;\n(v) lots of pre-basic seed potatoes shall comply with the following thresholds concerning the presence of RNQPs, or symptoms caused by the respective RNQPs as set out in the following table:\nRNQPs or symptoms caused by RNQPs\nThreshold for the presence of RNQPs on the lots of pre-basic seed potatoes of Union grade PBTC by mass\nCandidatus Liberibacter solanacearum Liefting et al . [LIBEPS]\n0 %\nDitylenchus destructor Thorne [DITYDE]\n0 %\nBlack scurf as caused by Thanatephorus cucumeris (A.B. Frank) Donk [RHIZSO]\n0 %\nPowdery scab as caused by Spongospora subterranea (Wallr.) Lagerh. [SPONSU]\n0 %.\n(2) The conditions for pre-basic seed potatoes of Union grade PB shall be as follows:\n(a) conditions concerning seed potatoes:\n(i) the number of plants not breeding true to the variety and the number of plants of a different variety together, shall not exceed 0,01 %;\n(ii) plants shall comply with the following thresholds concerning the presence of RNQPs, or symptoms caused by the respective RNQPs, as set out in the following table:\nRNQPs or symptoms caused by RNQPs\nThreshold for the presence of RNQPs on the growing plants for pre-basic seed potatoes of Union grade PB\nBlackleg ( Dickeya Samson et al . spp . [1DICKG]; Pectobacterium Waldee emend. Hauben e t al . spp . [1PECBG])\n0 %\nCandidatus Liberibacter solanacearum Liefting et al . [LIBEPS]\n0 %\nCandidatus phytoplasma solani Quaglino et al . [PHYPSO]\n0 %\nMosaic symptoms caused by viruses\nand\nsymptoms caused by Potato leaf roll virus [PLRV00]\n0,1 %\nPotato spindle tuber viroid [PSTVD0]\n0 %\nRNQPs or symptoms caused by RNQPs\nThreshold for the presence of RNQPs on the direct progeny of pre-basic seed potatoes of Union grade PB\nSymptoms of virus infection\n0,5 %;\n(b) tolerances applicable to lots, as regards the following impurities, blemishes and diseases:\n(i) seed potatoes affected by rots, other than ring rot or brown rot, shall not exceed 0,2 % by mass;\n(ii) seed potatoes affected by common scab over more than one third of their surface, shall not exceed 5,0 % by mass;\n(iii) shrivelled tubers due to excessive dehydration or dehydration caused by silver scurf, shall not exceed 0,5 % by mass;\n(iv) seed potatoes with external blemishes, including misshapen or damaged tubers, shall not exceed 3,0 % by mass;\n(v) the presence of earth and extraneous matter shall not exceed 1,0 % by mass;\n(vi) lots of pre-basic seed potatoes shall comply with the following thresholds concerning the presence of RNQPs, or symptoms caused by the respective RNQPs as set out in the following table:\nRNQPs or symptoms caused by RNQPs\nThreshold for the presence of RNQPs on the lots of pre-basic seed potatoes of Union grade PB by mass\nCandidatus Liberibacter solanacearum Liefting et al . [LIBEPS]\n0 %\nDitylenchus destructor Thorne [DITYDE]\n0 %\nBlack scurf affecting tubers over more than 10 % of their surface as caused by Thanatephorus cucumeris (A.B. Frank) Donk [RHIZSO]\n1,0 %\nPowdery scab affecting tubers over more than 10 % of their surface as caused by Spongospora subterranea (Wallr.) Lagerh. [SPONSU]\n1,0 %;\n(vii) the total percentage of seed potatoes covered by tolerances, as referred to in points (i) to (iv) and (vi), shall not exceed 6,0 % by mass.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Substituted by Commission Implementing Directive (EU) 2020/177 of 11 February 2020 amending Council Directives 66/401/EEC, 66/402/EEC, 68/193/EEC, 2002/55/EC, 2002/56/EC and 2002/57/EC, Commission Directives 93/49/EEC and 93/61/EEC and Implementing Directives 2014/21/EU and 2014/98/EU as regards pests of plants on seeds and other plant reproductive material (Text with EEA relevance)."
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudr/2014/21/annex",
    "retrieved_at": "2026-11-01T15:21:49.743215+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}