{
  "url": "https://openlegislation.uk/seed-potatoes-scotland-regulations-2015/schedule-6/paragraph-5",
  "json_url": "https://openlegislation.uk/seed-potatoes-scotland-regulations-2015/schedule-6/paragraph-5.json",
  "legislation": "ssi/2015/395",
  "legislation_title": "The Seed Potatoes (Scotland) Regulations 2015",
  "legislation_url": "https://openlegislation.uk/seed-potatoes-scotland-regulations-2015",
  "path": "schedule/6/paragraph/5",
  "kind": "paragraph",
  "number": "5",
  "heading": "Allowable surface area cover",
  "text": "(1) This paragraph applies, for the purposes of regulation 16(1) and (3), to seed potatoes to which Table II, III (a), (b) or (c) or IV applies.\n(2) Subject to sub-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, specified in column 1 of the Table in relation to a potato of that grade when, in the officer's 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) Sub-paragraph (2) does not apply when the disease Powdery Scab (Spongospora subterranea (Wallr.) Lagerh) takes its cankerous form.\nTABLE I\nGB GRADE PBTC PRODUCED IN SCOTLAND\nColumn 1Diseases, pests, damage and defects\nColumn 2Individual Tolerances\nGroup I\nPotato Wart Disease (Synchytrium endobioticum (Schilb) Perc.)\nNil\nPotato Tuber Eelworm (Ditylenchus destructor Thorne)\nNil\nPotato Cyst Nematode (Globodera spp. infesting potatoes)\nNil\nRing Rot (Clavibacter michiganensis subsp.sepedonicus (Spieck & Kotth) Daviset al.)\nNil\nBrown Rot (Ralstonia solanacearum (Smith) Yabuuchiet al.)\nNil\nPotato Tuber Moth (Phthorimaea operculella (Zell))\nNil\nPotato Spindle Tuber Viroid\nNil\nColorado Beetle (Leptinotarsa decemlineata (Say))\nNil\nCandidatus Liberibacter solanacearum Liefting et al., [LIBEPS\nNil\nGroup II\nBlackleg (Pectobacterium spp.)\nNil\nDickeyaspp.\nNil\nRots including Wet Rot but other than rots specified in Group I\nNil\nFrost damaged tubers\nNil\nGroup III\nSkin spot (Polyscytalum pustulans (Owen & Wakefield) Ellis)\nNil\nBlack scurf (Rhizoctonia solani Kühn)\nNil\nCommon scab (Streptomyces spp.)\nNil\nPowdery scab (Spongospora subterranea) (Wallr) Lagerh.f.sp.subterranea)\nNil\nGroup IV\nExternal blemishes or tubers other than diseased tubers whose shape is atypical for the variety\nNil\nSuperficial necrosis caused by strains of Potato Virus Y\nNil\nShrivelled tubers\nNil\nGroup V\nDirt or extraneous matter\n1.0%\nTABLE II\nGB GRADE PB PRODUCED IN SCOTLAND\nColumn 1Diseases, pests, damage and defects\nColumn 2Individual Tolerances\nColumn 3Group Tolerances\nColumn 4Collective Group Tolerances\nColumn 5Allowable % surface area cover\nGroup I\nPotato Wart Disease (Synchytrium endobioticum (Schilb) Perc.)\nNil\nPotato Tuber\nNil\nEelworm (Ditylenchus destructor Thorne)\nPotato Cyst Nematode (Globodera spp. infesting potatoes)\nNil\nRing Rot (Clavibacter michiganensis subsp.sepedonicus (Spieck & Kotth) Daviset al.)\nNil\nBrown Rot (Ralstonia solanacearum (Smith) Yabuuchiet al.)\nNil\nPotato Tuber Moth (Phthorimaea operculella (Zell))\nNil\nPotato Spindle Tuber Viroid\nNil\nColorado Beetle (Leptinotarsa decemlineata (Say))\nNil\nCandidatus Liberibacter solanacearum Liefting et al., [LIBEPS\nNil\nGroup II\nBlackleg (Pectobacterium spp.)\nNil\n0.2%\n}\nDickeyaspp.\nNil\n}\nRots, other than rots specified in Group I\n0.2%\n}\nFrost damaged tubers\n0.2%\n}\nGroup III\nSkin spot (Polyscytalum pustulans (Owen & Wakefield) Ellis)\n0.2%\n5.0%\n}\nBlack scurf (Rhizoctonia solani Kühn)\n1.0%\n}\n6.0%\n10.0%\nCommon scab (Streptomyces spp.)\n5.0%\n}\n33.3%\nPowdery scab (Spongospora subterranea (Wallr) Lagerh.f.sp.subterranea)\n1.0%\n}\n10.0%\nGroup IV\nExternal blemishes or tubers other than diseased tubers whose shape is atypical for the variety\n3.0%\n3.0%\n}\nSuperficial necrosis caused by strains of Potato Virus Y\nNil\n}\nShrivelled tubers\n0.5%\n}\nGroup V\nDirt or extraneous matter\n1%\n1%\nTABLE III\nGB GRADE S, SE AND E AND TEST AND TRIAL SEED POTATOES\na) GB GRADE S PRODUCED IN SCOTLAND\nColumn 1Diseases, pests, damage and defects\nColumn 2Individual Tolerances\nColumn 3Group Tolerances\nColumn 4Collective Group Tolerances\nColumn 5Allowable % surface area cover\nGroup I\nPotato Wart Disease (Synchytrium endobioticum (Schilb) Perc.)\nNil\nPotato Tuber Eelworm (Ditylenchus destructor Thorne)\nNil\nPotato Cyst Nematode (Globodera spp. infesting potatoes)\nNil\nRing Rot (Clavibacter michiganensis subsp.sepedonicus (Spieck & Kotth) Daviset al.)\nNil\nBrown Rot (Ralstonia solanacearum (Smith) Yabuuchiet al.)\nNil\nPotato Tuber Moth (Phthorimaea operculella (Zell)\nNil\nPotato Spindle Tuber Viroid\nNil\nColorado Beetle (Leptinotarsa decemlineata (Say)\nNil\nCandidatus Liberibacter solanacearum Liefting et al., [LIBEPS\nNil\nGroup II\nDickeyaspp.\nNil\n}\nRots, other than rots specified in Group I\n0.5%\n0.5%\n}\n(of which Wet Rot)\n(0.2%)\n}\nFrost damaged tubers\n0.5%\n}\nGroup III\nSkin spot (Polyscytalum pustulans (Owen & Wakefield) Ellis)\n0.5%\n5.0%\n}\n12.5%\nBlack scurf (Rhizoctonia solani Kühn)\n5.0%\n}\n6.0%\n10.0%\nCommon scab (Streptomyces spp.)\n5.0%\n}\n33.3%\nPowdery scab (Spongospora subterranea (Wallr) Lagerh.f.sp.subterranea)\n3.0%\n}\n10.0%\nGroup IV\nExternal blemishes or tubers other than diseased tubers whose shape is atypical for the variety\n3.0%\n3.0%\n}\nSuperficial necrosis caused by strains of Potato Virus Y\n0.1%\n}\nShrivelled tubers\n1.0%\n}\nGroup V\nDirt or extraneous matter\n1.0%\n1.0%\nb) GB GRADE SE PRODUCED IN SCOTLAND\nColumn 1Diseases, pests, damage and defects\nColumn 2Individual Tolerances\nColumn 3Group Tolerances\nColumn 4Collective Group Tolerances\nColumn 5Allowable % surface area cover\nGroup I\nPotato Wart Disease (Synchytrium endobioticum (Schilb) Perc.)\nNil\nPotato Tuber Eelworm (Ditylenchus destructor Thorne)\nNil\nPotato Cyst Nematode (Globodera spp. infesting potatoes)\nNil\nRing Rot (Clavibacter michiganensis subsp.sepedonicus (Spieck & Kotth) Daviset al.)\nNil\nBrown Rot (Ralstonia solanacearum (Smith) Yabuuchiet al.)\nNil\nPotato Tuber Moth (Phthorimaea operculella (Zell))\nNil\nPotato Spindle Tuber Viroid\nNil\nColorado Beetle (Leptinotarsa decemlineata (Say))\nNil\nCandidatus Liberibacter solanacearum Liefting et al., [LIBEPS\nNil\nGroup II\nDickeyaspp.\nNil\n}\nRots, other than rots specified in Group I\n0.5%\n}\n(of which Wet Rot)\n(0.2%)\n}\nFrost damaged tubers\n0.5%\n}\nGroup III\nSkin spot (Polyscytalum pustulans (Owen & Wakefield) Ellis)\n0.5%\n5.0%\n}\n12.5%\nBlack scurf (Rhizoctonia solani Kühn)\n5.0%\n}\n6.0%\n10.0%\nCommon scab (Streptomyces spp.)\n5.0%\n}\n33.3%\nPowdery scab (Spongospora subterranea (Wallr) Lagerh.f.sp.subterranea)\n3.0%\n}\n10.0%\nGroup IV\nExternal blemishes or tubers other than diseased tubers whose shape is atypical for the variety\n3.0%\n3.0%\n}\nSuperficial necrosis caused by strains of Potato Virus Y\n0.1%\n}\nShrivelled tubers\n1.0%\n}\nGroup V\nDirt or extraneous matter\n1.0%\n1.0%\nc) GB GRADE E AND TEST AND TRIAL SEED POTATOES PRODUCED IN SCOTLAND\nColumn 1Diseases, pests, damage and defects\nColumn 2Individual Tolerances\nColumn 3Group Tolerances\nColumn 4Collective Group Tolerances\nColumn 5Allowable % surface area cover\nGroup I\nPotato Wart Disease (Synchytrium endobioticum (Schilb) Perc.)\nNil\nPotato Tuber Eelworm (Ditylenchus destructor Thorne)\nNil\nPotato Cyst Nematode (Globodera spp. infesting potatoes)\nNil\nRing Rot (Clavibacter michiganensis subsp.sepedonicus(Spieck & Kotth) Daviset al.)\nNil\nBrown Rot (Ralstonia solanacearum (Smith) Yabuuchiet al.)\nNil\nPotato Tuber Moth (Phthorimaea operculella(Zell))\nNil\nPotato Spindle Tuber Viroid\nNil\nColorado Beetle (Leptinotarsa decemlineata (Say))\nNil\nCandidatus Liberibacter solanacearum Liefting et al., [LIBEPS\nNil\nGroup II\nDickeyaspp.\nNil\n}\nRots, other than rots specified in Group I\n0.5%\n0.5%\n}\n(of which Wet Rot)\n(0.2%)\n}\nFrost damaged tubers\n0.5%\n}\nGroup III\nSkin spot (Polyscytalum pustulans (Owen & Wakefield) Ellis)\n0.5%\n5.0%\n}\n12.5%\nBlack scurf (Rhizoctonia solani Kühn)\n5.0%\n}\n10.0%\nCommon scab (Streptomyces spp.)\n5.0%\n}\n6.0%\n33.3%\nPowdery scab (Spongospora subterranea (Wallr) Lagerh.f.sp.subterranea)\n3.0%\n}\n10.0%\nGroup IV\nExternal blemishes or tubers other than diseased tubers whose shape is atypical for the variety\n3.0%\n3.0%\n}\nSuperficial necrosis caused by strains of Potato Virus Y\n0.1%\n}\nShrivelled tubers\n1.0%\n}\nGroup V\nDirt or extraneous matter\n1.0%\nTABLE IV\nBASIC SEED POTATOES INTENDED FOR MARKETS OUTSIDE THE British Islands\nColumn 1Diseases, pests, damage and defects\nColumn 2Individual Tolerances\nColumn 3Group Tolerances\nColumn 4Collective Group Tolerances\nColumn 5Allowable % surface area cover\nGroup I\nPotato Wart Disease (Synchytrium endobioticum (Schilb) Perc.)\nNil\nPotato Tuber Eelworm (Ditylenchus destructor Thorne)\nNil\nPotato Cyst Nematode (Globodera spp. infesting potatoes)\nNil\nRing Rot (Clavibacter michiganensis subsp.sepedonicus (Spieck & Kotth) Daviset al.)\nNil\nBrown Rot (Ralstonia solanacearum (Smith) Yabuuchiet al.)\nNil\nPotato Tuber Moth (Phthorimaea operculella (Zell))\nNil\nPotato Spindle Tuber Viroid\nNil\nColorado Beetle (Leptinotarsa decemlineata (Say))\nNil\nGroup II\nDickeyaspp.\nNil\n}\nRots including Wet Rot but other than rots specified in Group I\n0.2%\n0.2%\n}\nFrost damaged tubers\n0.2%\n}\nGroup III\nSkin spot (Polyscytalum pustulans (Owen & Wakefield) Ellis)\n0.5%\n1.5%\n}\n12.5%\nBlack scurf (Rhizoctonia solani Kühn)\n1.5%\n}\n4.7%\n12.5%\nCommon scab (Streptomyces spp.)\n1.5%\n}\n12.5%\nPowdery scab (Spongospora subterranea (Wallr) Lagerh.f.sp.subterranea)\n1.5%\n}\n12.5%\nGroup IV\nExternal blemishes or tubers other than diseased tubers whose shape is atypical for the variety\n1.0%\n3.0%\n}\nSuperficial necrosis caused by strains of Potato Virus Y\n0.1%\n}\nExternal necrosis (caused by viruses other than Potato Virus Y)\n2.0%\n}\nShrivelled tubers\n2.0%\n}\nGroup V\nDirt or extraneous matter\n0.5%",
  "extent": "S",
  "status": null,
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Word in sch. 6 para. 5 Table 1 substituted (31.12.2020) by The Seed and Propagating Material (EU Exit) (Scotland) (Amendment) Regulations 2019 (S.S.I. 2019/59), regs. 1(1)(b), 16(20)(b) (as amended by S.S.I. 2020/445, regs. 1(1)(b), 17(17)(b)); 2020 c. 1, Sch. 5 para. 1(1)"
    },
    {
      "type": "F",
      "label": "F2",
      "text": "Words in sch. 6 para. 5 Table 1 inserted (1.7.2020) by The Seed and Plant Material (Miscellaneous Amendments) (Scotland) Regulations 2020 (S.S.I. 2020/165), regs. 1(1), 8(4)(a)"
    },
    {
      "type": "F",
      "label": "F3",
      "text": "Word in sch. 6 para. 5 Table 2 substituted (31.12.2020) by The Seed and Propagating Material (EU Exit) (Scotland) (Amendment) Regulations 2019 (S.S.I. 2019/59), regs. 1(1)(b), 16(20)(b) (as amended by S.S.I. 2020/445, regs. 1(1)(b), 17(17)(b)); 2020 c. 1, Sch. 5 para. 1(1)"
    },
    {
      "type": "F",
      "label": "F4",
      "text": "Words in sch. 6 para. 5 Table 2 inserted (1.7.2020) by The Seed and Plant Material (Miscellaneous Amendments) (Scotland) Regulations 2020 (S.S.I. 2020/165), regs. 1(1), 8(4)(b)"
    },
    {
      "type": "F",
      "label": "F5",
      "text": "Word in sch. 6 para. 5 Table 3 heading substituted (31.12.2020) by The Seed and Propagating Material (EU Exit) (Scotland) (Amendment) Regulations 2019 (S.S.I. 2019/59), regs. 1(1)(b), 16(20)(c)(i) (as amended by S.S.I. 2020/445, regs. 1(1)(b), 17(17)(c)); 2020 c. 1, Sch. 5 para. 1(1)"
    },
    {
      "type": "F",
      "label": "F6",
      "text": "Word in sch. 6 para. 5 Table 3 substituted (31.12.2020) by The Seed and Propagating Material (EU Exit) (Scotland) (Amendment) Regulations 2019 (S.S.I. 2019/59), regs. 1(1)(b), 16(20)(c)(ii) (as amended by S.S.I. 2020/445, regs. 1(1)(b), 17(17)(c)); 2020 c. 1, Sch. 5 para. 1(1)"
    },
    {
      "type": "F",
      "label": "F7",
      "text": "Words in sch. 6 para. 5 Table 3 inserted (1.7.2020) by The Seed and Plant Material (Miscellaneous Amendments) (Scotland) Regulations 2020 (S.S.I. 2020/165), regs. 1(1), 8(4)(c)"
    },
    {
      "type": "F",
      "label": "F8",
      "text": "Words in sch. 6 para. 5 Table 4 heading substituted (31.12.2020) by The Seed and Propagating Material (EU Exit) (Scotland) (Amendment) Regulations 2019 (S.S.I. 2019/59), regs. 1(1)(b), 16(20)(d); 2020 c. 1, Sch. 5 para. 1(1)"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/ssi/2015/395/schedule/6/paragraph/5",
    "retrieved_at": "2026-10-28T21:26:52.276655+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."
}