Allowable surface area cover
5.—(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.
(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—
(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
(b)the potato has at least two eyes at the rose end wholly unaffected by the disease.
(3) Sub-paragraph (2) does not apply when the disease Powdery Scab (Spongospora subterranea (Wallr.) Lagerh) takes its cankerous form.
TABLE I
UNION GRADE PBTC PRODUCED IN SCOTLAND
Column 1 Diseases, pests, damage and defects | Column 2 Individual Tolerances |
|---|---|
| Group I | |
| Potato Wart Disease (Synchytrium endobioticum (Schilb) Perc.) | Nil |
| Potato Tuber Eelworm (Ditylenchus destructor Thorne) | Nil |
| Potato Cyst Nematode (Globodera spp. infesting potatoes) | Nil |
| Ring Rot (Clavibacter michiganensis subsp.sepedonicus (Spieck & Kotth) Daviset al.) | Nil |
| Brown Rot (Ralstonia solanacearum (Smith) Yabuuchiet al.) | Nil |
| Potato Tuber Moth (Phthorimaea operculella (Zell)) | Nil |
| Potato Spindle Tuber Viroid | Nil |
| Colorado Beetle (Leptinotarsa decemlineata (Say)) | Nil |
| Group II | |
| Blackleg (Pectobacterium spp.) | Nil |
| Dickeyaspp. | Nil |
| Rots including Wet Rot but other than rots specified in Group I | Nil |
| Frost damaged tubers | Nil |
| Group III | |
| Skin spot (Polyscytalum pustulans (Owen & Wakefield) Ellis) | Nil |
| Black scurf (Rhizoctonia solani Kühn) | Nil |
| Common scab (Streptomyces spp.) | Nil |
| Powdery scab (Spongospora subterranea) (Wallr) Lagerh.f.sp.subterranea) | Nil |
| Group IV | |
| External blemishes or tubers other than diseased tubers whose shape is atypical for the variety | Nil |
| Superficial necrosis caused by strains of Potato Virus Y | Nil |
| Shrivelled tubers | Nil |
| Group V | |
| Dirt or extraneous matter | 1.0% |
TABLE II
UNION GRADE PB PRODUCED IN SCOTLAND
Column 1 Diseases, pests, damage and defects | Column 2 Individual Tolerances | Column 3 Group Tolerances | Column 4 Collective Group Tolerances | Column 5 Allowable % surface area cover | |
|---|---|---|---|---|---|
| Group I | |||||
| Potato Wart Disease (Synchytrium endobioticum (Schilb) Perc.) | Nil | ||||
| Potato Tuber | Nil | ||||
| Eelworm (Ditylenchus destructor Thorne) | |||||
| Potato Cyst Nematode (Globodera spp. infesting potatoes) | Nil | ||||
| Ring Rot (Clavibacter michiganensis subsp.sepedonicus (Spieck & Kotth) Daviset al.) | Nil | ||||
| Brown Rot (Ralstonia solanacearum (Smith) Yabuuchiet al.) | Nil | ||||
| Potato Tuber Moth (Phthorimaea operculella (Zell)) | Nil | ||||
| Potato Spindle Tuber Viroid | Nil | ||||
| Colorado Beetle (Leptinotarsa decemlineata (Say)) | Nil | ||||
| Group II | |||||
| Blackleg (Pectobacterium spp.) | Nil | 0.2% | } | ||
| Dickeyaspp. | Nil | } | |||
| Rots, other than rots specified in Group I | 0.2% | } | |||
| Frost damaged tubers | 0.2% | } | |||
| Group III | |||||
| Skin spot (Polyscytalum pustulans (Owen & Wakefield) Ellis) | 0.2% | 5.0% | } | ||
| Black scurf (Rhizoctonia solani Kühn) | 1.0% | } | 6.0% | 10.0% | |
| Common scab (Streptomyces spp.) | 5.0% | } | 33.3% | ||
| Powdery scab (Spongospora subterranea (Wallr) Lagerh.f.sp.subterranea) | 1.0% | } | 10.0% | ||
| Group IV | |||||
| External blemishes or tubers other than diseased tubers whose shape is atypical for the variety | 3.0% | 3.0% | } | ||
| Superficial necrosis caused by strains of Potato Virus Y | Nil | } | |||
| Shrivelled tubers | 0.5% | } | |||
| Group V | |||||
| Dirt or extraneous matter | 1% | 1% | |||
TABLE III
UNION GRADE S, SE AND E AND TEST AND TRIAL SEED POTATOES
a) UNION GRADE S PRODUCED IN SCOTLAND
Column 1 Diseases, pests, damage and defects | Column 2 Individual Tolerances | Column 3 Group Tolerances | Column 4 Collective Group Tolerances | Column 5 Allowable % surface area cover | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Group I | |||||||||||
| Potato Wart Disease (Synchytrium endobioticum (Schilb) Perc.) | Nil | ||||||||||
| Potato Tuber Eelworm (Ditylenchus destructor Thorne) | Nil | ||||||||||
| Potato Cyst Nematode (Globodera spp. infesting potatoes) | Nil | ||||||||||
| Ring Rot (Clavibacter michiganensis subsp.sepedonicus (Spieck & Kotth) Daviset al.) | Nil | ||||||||||
| Brown Rot (Ralstonia solanacearum (Smith) Yabuuchiet al.) | Nil | ||||||||||
| Potato Tuber Moth (Phthorimaea operculella (Zell) | Nil | ||||||||||
| Potato Spindle Tuber Viroid | Nil | ||||||||||
| Colorado Beetle (Leptinotarsa decemlineata (Say) | Nil | ||||||||||
| Group II | |||||||||||
| Dickeyaspp. | Nil | } | |||||||||
| Rots, other than rots specified in Group I | 0.5% | 0.5% | } | ||||||||
| (of which Wet Rot) | (0.2%) | } | |||||||||
| Frost damaged tubers | 0.5% | } | |||||||||
| Group III | |||||||||||
| Skin spot (Polyscytalum pustulans (Owen & Wakefield) Ellis) | 0.5% | 5.0% | } | 12.5% | |||||||
| Black scurf (Rhizoctonia solani Kühn) | 5.0% | } | 6.0% | 10.0% | |||||||
| Common scab (Streptomyces spp.) | 5.0% | } | 33.3% | ||||||||
| Powdery scab (Spongospora subterranea (Wallr) Lagerh.f.sp.subterranea) | 3.0% | } | 10.0% | ||||||||
| Group IV | |||||||||||
| External blemishes or tubers other than diseased tubers whose shape is atypical for the variety | 3.0% | 3.0% | } | ||||||||
| Superficial necrosis caused by strains of Potato Virus Y | 0.1% | } | |||||||||
| Shrivelled tubers | 1.0% | } | |||||||||
| Group V | |||||||||||
| Dirt or extraneous matter | 1.0% | 1.0% | |||||||||
| b) UNION GRADE SE PRODUCED IN SCOTLAND | |||||||||||
Column 1 Diseases, pests, damage and defects | Column 2 Individual Tolerances | Column 3 Group Tolerances | Column 4 Collective Group Tolerances | Column 5 Allowable % surface area cover | |||||||
| Group I | |||||||||||
| Potato Wart Disease (Synchytrium endobioticum (Schilb) Perc.) | Nil | ||||||||||
| Potato Tuber Eelworm (Ditylenchus destructor Thorne) | Nil | ||||||||||
| Potato Cyst Nematode (Globodera spp. infesting potatoes) | Nil | ||||||||||
| Ring Rot (Clavibacter michiganensis subsp.sepedonicus (Spieck & Kotth) Daviset al.) | Nil | ||||||||||
| Brown Rot (Ralstonia solanacearum (Smith) Yabuuchiet al.) | Nil | ||||||||||
| Potato Tuber Moth (Phthorimaea operculella (Zell)) | Nil | ||||||||||
| Potato Spindle Tuber Viroid | Nil | ||||||||||
| Colorado Beetle (Leptinotarsa decemlineata (Say)) | Nil | ||||||||||
| Group II | |||||||||||
| Dickeyaspp. | Nil | } | |||||||||
| Rots, other than rots specified in Group I | 0.5% | } | |||||||||
| (of which Wet Rot) | (0.2%) | } | |||||||||
| Frost damaged tubers | 0.5% | } | |||||||||
| Group III | |||||||||||
| Skin spot (Polyscytalum pustulans (Owen & Wakefield) Ellis) | 0.5% | 5.0% | } | 12.5% | |||||||
| Black scurf (Rhizoctonia solani Kühn) | 5.0% | } | 6.0% | 10.0% | |||||||
| Common scab (Streptomyces spp.) | 5.0% | } | 33.3% | ||||||||
| Powdery scab (Spongospora subterranea (Wallr) Lagerh.f.sp.subterranea) | 3.0% | } | 10.0% | ||||||||
| Group IV | |||||||||||
| External blemishes or tubers other than diseased tubers whose shape is atypical for the variety | 3.0% | 3.0% | } | ||||||||
| Superficial necrosis caused by strains of Potato Virus Y | 0.1% | } | |||||||||
| Shrivelled tubers | 1.0% | } | |||||||||
| Group V | |||||||||||
| Dirt or extraneous matter | 1.0% | 1.0% | |||||||||
| c) UNION GRADE E AND TEST AND TRIAL SEED POTATOES PRODUCED IN SCOTLAND | |||||||||||
Column 1 Diseases, pests, damage and defects | Column 2 Individual Tolerances | Column 3 Group Tolerances | Column 4 Collective Group Tolerances | Column 5 Allowable % surface area cover | |||||||
| Group I | |||||||||||
| Potato Wart Disease (Synchytrium endobioticum (Schilb) Perc.) | Nil | ||||||||||
| Potato Tuber Eelworm (Ditylenchus destructor Thorne) | Nil | ||||||||||
| Potato Cyst Nematode (Globodera spp. infesting potatoes) | Nil | ||||||||||
| Ring Rot (Clavibacter michiganensis subsp.sepedonicus(Spieck & Kotth) Daviset al.) | Nil | ||||||||||
| Brown Rot (Ralstonia solanacearum (Smith) Yabuuchiet al.) | Nil | ||||||||||
| Potato Tuber Moth (Phthorimaea operculella(Zell)) | Nil | ||||||||||
| Potato Spindle Tuber Viroid | Nil | ||||||||||
| Colorado Beetle (Leptinotarsa decemlineata (Say)) | Nil | ||||||||||
| Group II | |||||||||||
| Dickeyaspp. | Nil | } | |||||||||
| Rots, other than rots specified in Group I | 0.5% | 0.5% | } | ||||||||
| (of which Wet Rot) | (0.2%) | } | |||||||||
| Frost damaged tubers | 0.5% | } | |||||||||
| Group III | |||||||||||
| Skin spot (Polyscytalum pustulans (Owen & Wakefield) Ellis) | 0.5% | 5.0% | } | 12.5% | |||||||
| Black scurf (Rhizoctonia solani Kühn) | 5.0% | } | 10.0% | ||||||||
| Common scab (Streptomyces spp.) | 5.0% | } | 6.0% | 33.3% | |||||||
| Powdery scab (Spongospora subterranea (Wallr) Lagerh.f.sp.subterranea) | 3.0% | } | 10.0% | ||||||||
| Group IV | |||||||||||
| External blemishes or tubers other than diseased tubers whose shape is atypical for the variety | 3.0% | 3.0% | } | ||||||||
| Superficial necrosis caused by strains of Potato Virus Y | 0.1% | } | |||||||||
| Shrivelled tubers | 1.0% | } | |||||||||
| Group V | |||||||||||
| Dirt or extraneous matter | 1.0% | ||||||||||
TABLE IV
BASIC SEED POTATOES INTENDED FOR MARKETS OUTSIDE THE EU
Column 1 Diseases, pests, damage and defects | Column 2 Individual Tolerances | Column 3 Group Tolerances | Column 4 Collective Group Tolerances | Column 5 Allowable % surface area cover | |
|---|---|---|---|---|---|
| Group I | |||||
| Potato Wart Disease (Synchytrium endobioticum (Schilb) Perc.) | Nil | ||||
| Potato Tuber Eelworm (Ditylenchus destructor Thorne) | Nil | ||||
| Potato Cyst Nematode (Globodera spp. infesting potatoes) | Nil | ||||
| Ring Rot (Clavibacter michiganensis subsp.sepedonicus (Spieck & Kotth) Daviset al.) | Nil | ||||
| Brown Rot (Ralstonia solanacearum (Smith) Yabuuchiet al.) | Nil | ||||
| Potato Tuber Moth (Phthorimaea operculella (Zell)) | Nil | ||||
| Potato Spindle Tuber Viroid | Nil | ||||
| Colorado Beetle (Leptinotarsa decemlineata (Say)) | Nil | ||||
| Group II | |||||
| Dickeyaspp. | Nil | } | |||
| Rots including Wet Rot but other than rots specified in Group I | 0.2% | 0.2% | } | ||
| Frost damaged tubers | 0.2% | } | |||
| Group III | |||||
| Skin spot (Polyscytalum pustulans (Owen & Wakefield) Ellis) | 0.5% | 1.5% | } | 12.5% | |
| Black scurf (Rhizoctonia solani Kühn) | 1.5% | } | 4.7% | 12.5% | |
| Common scab (Streptomyces spp.) | 1.5% | } | 12.5% | ||
| Powdery scab (Spongospora subterranea (Wallr) Lagerh.f.sp.subterranea) | 1.5% | } | 12.5% | ||
| Group IV | |||||
| External blemishes or tubers other than diseased tubers whose shape is atypical for the variety | 1.0% | 3.0% | } | ||
| Superficial necrosis caused by strains of Potato Virus Y | 0.1% | } | |||
| External necrosis (caused by viruses other than Potato Virus Y) | 2.0% | } | |||
| Shrivelled tubers | 2.0% | } | |||
| Group V | |||||
| Dirt or extraneous matter | 0.5% | ||||