{
  "url": "https://openlegislation.uk/seed-potatoes-scotland-regulations-2000/schedule-7/paragraph-5",
  "json_url": "https://openlegislation.uk/seed-potatoes-scotland-regulations-2000/schedule-7/paragraph-5.json",
  "legislation": "ssi/2000/201",
  "legislation_title": "The Seed Potatoes (Scotland) Regulations 2000",
  "legislation_url": "https://openlegislation.uk/seed-potatoes-scotland-regulations-2000",
  "path": "schedule/7/paragraph/5",
  "kind": "paragraph",
  "number": "5",
  "heading": "Allowable surface area cover",
  "text": "(1) This paragraph applies, for the purposes of regulation 13(1)(b), to seed potatoes to which Table II, III, IV or V applies.\n(2) Subject to paragraph (3), an authorised officer may deem a potato in any sample of seed potatoes to which this paragraph applies not to be affected by a disease in Group III, set out in column 1 of the Table applicable to a potato of that class when, in his opinion–\n(a) the surface area of the potato affected by the disease is less than the percentage surface area in the entry corresponding to the disease in column 5 of the Table; and\n(b) the potato has at least two eyes at the rose end wholly unaffected by the disease.\n(3) Paragraph (2) shall not apply when the disease Powdery Scab (Spongospora subterranea(Wallr.) Lagerh) takes its cankerous form.\nTABLE I\nPRE-BASIC TC CLASS\nColumn 1\nColumn 2\nDiseases, pests, damage and defects\nIndividual Tolerances\nGROUP I\nWart Disease (Synchytrium endobioticumSchilb.)\nNIL\nPotato Tuber Eelworm (Ditylenchus destructorThorne)\nNIL\nPotato Cyst Nematode (Globoderaspecies infesting potatoes)\nNIL\nRing Rot (Clavibacter michiganensis(Smith) Davis et al ssp.\nNIL\nSepedonicus (Spieck Kotth) Davis et al)\nBrown Rot (Ralstonia solanacearum (Smith) Yabuuchi et al)\nNIL\nPotato Tuber Moth (Phthorimaea operculella (Zell)\nNIL\nPotato Spindle Tuber Viroid\nNIL\nColorado Beetle (Leptinotarsa decemlineata (Say))\nNIL\nGROUP II\nBlight (Phytophthora infestans (Mont) de Bary)\nNIL\nBlackleg (Erwinia carotovora Jones) Bergey et al ssp atroseptica\nNIL\n(Hellmers & Dowson) Dye) or Erwinia chrysanthemi Burkholder et al or both\nGangrene/ Dry Rot/Wet Rot\nNIL\nFrost damaged tubers\nNIL\nGROUP II\nSkin spot (Polyscytalum pustulans (Owen & Wakefield) M. B. Ellis\nNIL\nBlack scurf (Rhizoctonia solani Kuhn)\nNIL\nCommon scab (Streptomyces species)\nNIL\nPowdery scab (Spongospora subterranea (Wallr) Lagerh)\nNIL\nGROUP IV\nExternal blemishes or tubers other than diseased tubers whose shape is atypical for the variety\n3%\nGROUP V\nDirt or other extraneous matter\n1%\nTABLE II\nPRE-BASIC 1 AND PRE-BASIC 2 CLASS\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nColumn 5\nDiseases, pests, damage and defects\nIndividual tolerances\nGroup Tolerances\nCollective group tolerances\nAllowable % surface area cover\nGROUP I\nWart Disease (Synchytrium endobioticumSchilb.)\nNIL\n–\n–\nPotato Tuber Eelworm (Ditylenchus destructorThorne)\nNIL\n–\n–\nPotato Cyst Nematode (Globoderaspecies infesting potatoes)\nNIL\n–\n–\nRing Rot (Clavibacter michiganensis (Smith) Davis et al ssp. Sepedonicus (Spieck Kotth) Davis et al)\nNIL\n–\n–\nBrown Rot (Ralstonia solanacearum (Smith) Yabuuchi et al)\nNIL\n–\n–\nPotato Tuber Moth (Phthorimaea operculella (Zell)\nNIL\n–\n–\nPotato Spindle Tuber Viroid\nNIL\n–\n–\nColorado Beetle (Leptinotarsa decemlineata (Say))\nNIL\n–\n–\nGROUP II\nBlight (Phytophthora infestans (Mont) de Bary\n0.1%\n0.2%\nBlackleg (Erwinia carotovora (Jones) Bergey et al ssp atroseptica (Hellmers & Dowson) Dye) or Erwinia chrysanthemi Burkholder et al or both\nNil\n0.2%\n4.0%\nGangrene/ Dry Rot/Wet Rot\n0.1%\n0.2%\n4.0%\nFrost damaged tubers\n0.1%\n0.2%\n4.0%\nGROUP III\nSkin spot (Polyscytalum pustulans (Owen & Wakefield) M. B. Ellis\n0.2%\n3.0%\n4.0%\nBlack scurf (Rhizoctonia solani Kuhn)\n0.5%\n3.0%\n4.0%\n12.5%\nCommon scab (Streptomyces species)\n3.0%\n3.0%\n4.0%\n25.0%\nPowdery scab (Spongospora subterranea (Wallr) Lagerh)\n0.5%\n3.0%\n4.0%\n12.5%\nGROUP IV\nExternal blemishes or tubers other than diseased tubers whose shape is atypical for the variety\n1.0%\n4.0%\nGROUP V\nDirt or other extraneous matter\n1.0%\nTABLE III\nVTSC CLASS AND EQUIVALENT IN OTHER PARTS OF THE UK\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nColumn 5\nDiseases, pests, damage and defects\nIndividual tolerances\nGroup Tolerances\nCollective group tolerances\nAllowable % surface area cover\nGROUP I\nWart Disease (Synchytrium endobioticum (Schilb) Perc.)\nNIL\n–\n–\nPotato Tuber Eelworm (Ditylenchus destructor Thorne)\nNIL\n–\n–\nPotato Cyst Nematode (Globodera species infesting potatoes)\nNIL\n–\n–\nRing Rot (Clavibacter michiganensis (Smith) Davis et al ssp sepedonicus (Spieck. & Kotth.) Davis et al)\nNIL\n–\n–\nBrown Rot (Ralstonia solancearum (Smith) Yabuuchi et al.)\nNIL\n–\n–\nPotato Tuber Moth (Phthorimaea operculella (Zell)\nNIL\n–\n–\nPotato Spindle Tuber Viroid\nNIL\n–\n–\nColorado Beetle (Leptinotarsa decemlineata (Say))\nNIL\n–\n–\nGROUP II\nBlight (Phytophthora infestans (Mont.) de Bary\n0.5%\n0.5%\n4.0.%\nBlackleg (Erwinia carotovora (Jones) Bergey et al. ssp atroseptica (Hellmers & Dowson) Dye) or Erwinia chrysanthemi Burkholder et al or both\nNIL\n0.5%\n4.0.%\nWet Rot including: Watery Wound Rot (Pythium ultimumTrow)\n0.5%\n0.5%\n4.0.%\nPink Rot (Phytophthora erythroseptica Pethybridge) and Pit Rot\n0.5%\n0.5%\n4.0.%\nDry Rot (Fusarium species)\n0.5%\n0.5%\n4.0.%\nGangrene (Phoma species)\n0.5%\n0.5%\n4.0%\nFrost damaged tubers\n0.5%\n0.5%\n4.0.%\nGROUP III\nSkin Spot (Polyscytalum pustulans (Owen & Wakefield) M. B. Ellis)\n0.5%\n3.0.%\n4.0.%\nBlack Scurf (Rhizoctonia solani Kuhn)\n1.5%\n3.0%\n4.0.%\n25.0%\nCommon Scab (Streptomyces species)\n3.0%\n3.0.%\n4.0.%\n25.0%\nPowdery Scab (Spongospora subterranea (Wallr) Lagerh.)\n1.5%\n3.0%\n4.0.%\n12.5%\nGROUP IV\nExternal blemishes or tubers other than diseased tubers whose shape is atypical for the variety\n2.0%\n4.0.%\nGROUP V\nDirt or other extraneous matter\n1.0%\n1.0%\n–\nTABLE IV\nBASIC SEED POTATOES OTHER THAN VTSC CLASS AND EQUIVALENT IN OTHER PARTS OF THE UK\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nColumn 5\nDiseases, pests, damage and defects\nIndividual tolerances\nGroup Tolerances\nCollective group tolerances\nAllowable % surface area cover\nGROUP I\nWart Disease (Synchytrium endobioticum (Schilb) Perc.)\nNIL\n–\n–\nPotato Tuber Eelworm (Ditylenchus destructor Thorne)\nNIL\n–\n–\nPotato Cyst Nematode (Globodera species infesting potatoes)\nNIL\n–\n–\nRing Rot (Clavibacter michiganensis (Smith) Davis et al ssp sepedonicus (Spieck. & Kotth.) Davis et al)\nNIL\n–\n–\nBrown Rot (Ralstonia solancearum (Smith) Yabuuchi et al.)\nNIL\n–\n–\nPotato Tuber Moth (Phthorimaea operculella (Zell)\nNIL\n–\n–\nPotato Spindle Tuber Viroid\nNIL\n–\n–\nColorado Beetle (Leptinotarsa decemlineata (Say))\nNIL\n–\n–\nGROUP II\nBlight (Phytophthora infestans (Mont.) de Bary\n0.5%\n0.5%\n4.0%\nBlackleg (Erwinia carotovora (Jones) Bergey et al. ssp atroseptica (Hellmers & Dowson) Dye) or Erwinia chrysanthemi Burkholder et al or both\n0.5%\n0.5%\n4.0%\nWet Rot including: Watery Wound Rot (Pythium ultimum Trow)\n0.5%\n0.5%\n4.0%\nPink Rot (Phytophthora erythroseptica Pethybridge) and Pit Rot\n0.5%\n0.5%\n4.0%\nDry Rot (Fusarium species)\n0.5%\n0.5%\n4.0%\nGangrene (Phoma species)\n0.5%\n0.5%\n4.0%\nFrost damaged tubers\n0.5%\n0.5%\n4.0%\nGROUP III\nSkin Spot (Polyscytalum pustulans (Owen & Wakefield) M. B. Ellis)\n2.0%\n4.0%\n4.0%\n12.5%\nPowdery Scab (Spongospora subterranea (Wallr) Lagerh.)\n3.0%\n4.0%\n4.0%\n12.5%\nBlack Scurf (Rhizoctonia solani Kuhn)\n3.0%\n4.0%\n4.0%\n25.0%\nCommon Scab (Streptomyces species)\n4.0%\n4.0%\n4.0%\n25.0%\nGROUP IV\nExternal blemishes or tubers other than diseased tubers whose shape is atypical for the variety\n2.0%\n4.0%\n4.0%\nGROUP V\nDirt or other extraneous matter\n1.0%\n–\nTABLE V\nBASIC SEED POTATOES PRODUCED OUTSIDE SCOTLAND AND NOT PRODUCED IN THE UK\nColumn 1\nColumn 2\nColumn 3\nColumn 4\nColumn 5\nDiseases, pests, damage and defects\nIndividual tolerances\nGroup Tolerances\nCollective group tolerances\nAllowable % surface area cover\nGROUP I\nWart Disease (Synchytrium endobioticum (Schilb) Perc.)\nNIL\n–\nPotato Tuber Eelworm (Ditylenchus destructor Thorne)\nNIL\n–\nPotato Cyst Nematode (Globodera species infesting potatoes)\nNIL\n–\nRing Rot (Clavibacter michiganensis (Smith) Davis et al ssp sepedonicus (Spieck. & Kotth.) Davis et al)\nNIL\n–\nBrown Rot (Ralstonia solancearum (Smith) Yabuuchi et al.)\nNIL\n–\nPotato Tuber Moth (Phthorimaea operculella Zell)\nNIL\n–\nPotato Spindle Tuber Viroid\nNIL\n–\nColorado Beetle (Leptinotarsa decemlineata (Say))\nNIL\n–\nGROUP II\nDry and Wet Rot\n0.5%\n6.0%\nGROUP III\nCommon Scab (Streptomyces species)\n5.0.%\n6.0%\n33.3%\nGROUP IV\nExternal blemishes or tubers other than diseased tubers whose shape is atypical for the variety\n3.0%\n6.0%\nGROUP V\nDirt or other extraneous matter\n2.0%\n–",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [
    {
      "type": "am",
      "affecting": "ssi/2005/280",
      "affecting_title": "The Seed Potatoes (Scotland) Amendment Regulations 2005"
    },
    {
      "type": "subst",
      "affecting": "ssi/2005/280",
      "affecting_title": "The Seed Potatoes (Scotland) Amendment Regulations 2005"
    },
    {
      "type": "am",
      "affecting": "ssi/2007/418",
      "affecting_title": "The Seed Potatoes (Scotland) Amendment Regulations 2007"
    },
    {
      "type": "am",
      "affecting": "ssi/2010/71",
      "affecting_title": "The Seed Potatoes (Scotland) Amendment Regulations 2010"
    }
  ],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/ssi/2000/201/schedule/7/paragraph/5",
    "retrieved_at": "2026-10-28T22:50:22.020320+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."
}