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The Seed Potatoes (Wales) Regulations 2006
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Regulations 2(3), 9(3), 12(5) and 21(1)(3) and (4)
SCHEDULE 3SPECIFIED DISEASES OR PESTS, DAMAGE AND DEFECTS AND TOLERANCES
PART IPre-basic seed potatoes of pre-basic TC class produced in Wales
| Column 1 | Column 2 |
|---|---|
| Specified diseases or pests, damage and defects | Individual tolerances |
| GROUP I | |
| Wart Disease (Synchytrium endobioticum (Schlib.) Perc.) | Nil |
| Potato Tuber Eelworm (Ditylenchus destructor Thorne) | Nil |
| Potato Cyst Nematode (Globodera species infesting potatoes) | Nil |
| Ring Rot (Clavibacter michiganensis (Smith) Davis et al. spp. sepedonicus (Spieck. & Kotth.) Davis et al.) | Nil |
| Brown Rot (Ralstonia solanacearum (Smith) Yabuuchi et al.) | Nil |
| Potato Spindle Tuber Viroid | Nil |
| Colorado Beetle (Lepinotarsa decemlineata (Say)) | Nil |
| GROUP II | |
| Blight (Phytophthora infestans (Mont.) de Bary) | Nil |
| Blackleg (Erwinia carotovora (Jones) Bergey et al. spp. atroseptica (Hellmers & Dowson) Dye or Erwinia chrysanthemi Burkholder et al. or both) | Nil |
| Soft Rots including: Watery Wound Rot (Pythium ultimum Trow) | Nil |
| Pink Rot (Phytophthora erythroseptica Pethybridge) and Pit Rot | Nil |
| Dry Rot (Fusarium species) | Nil |
| Gangrene (Phoma species) | Nil |
| Frost damaged tubers | Nil |
| GROUP III | |
| Skin spot (Polyscytalum pustulans (Owen & Wakefield) M. B. Ellis) | Nil |
| GROUP IV | |
| Black Scurf (Rhizoctonia solani Kuhn) | Nil |
| Common Scab (Streptomyces species) | Nil |
| GROUP V | |
| Powdery scab (Spongospora subterranea (Wallr.) Legerh.) | Nil |
| GROUP VI | |
| External blemishes or tubers other than diseased tubers whose shape is atypical for the variety | 3.0% |
| GROUP VII | |
| Dirt or other extraneous matter | 1.0% |
PART IIPre-basic seed potatoes of pre-basic 1, pre-basic 2, pre-basic 3 or pre-basic 4 class produced in Wales
| Column 1 | Column 2 | Column 3 | Column 4 |
|---|---|---|---|
| Specified diseases or pests, damage and defects | Individual tolerances | Group tolerances | Collective group tolerances |
| GROUP I | |||
| Wart Disease (Synchytrium endobioticum (Schlib.) Perc.) | Nil | — | — |
| Potato Tuber Eelworm (Ditylenchus destructor Thorne) | Nil | — | — |
| Potato Cyst Nematode (Globodera species infesting potatoes) | Nil | — | — |
| Ring Rot (Clavibacter michiganensis (Smith) Davis et al. spp. sepedonicus (Spieck. & Kotth.) Davis et al.) | Nil | — | — |
| Brown Rot (Ralstonia solanacearum (Smith) Yabuuchi et al.) | Nil | — | — |
| Potato Spindle Tuber Viroid | Nil | — | — |
| Colorado Beetle (Lepinotarsa decemlineata (Say)) | Nil | — | — |
| GROUP II | |||
| Blight (Phytophthora infestans (Mont.) de Bary) | 0.2% | — | — |
| Blackleg (Erwinia carotovora (Jones) Bergey et al. spp. atroseptica (Hellmers & Dowson) Dye or Erwinia chrysanthemi Burkholder et al. or both) | Nil | ) | ) |
| Soft Rots including: Watery Wound Rot (Pythium ultimum Trow) | 0.2% | ) | ) |
| Pink Rot (Phytophthora erythroseptica Pethybridge) and Pit Rot | 0.2% | ) 0.2% | ) |
| Dry Rot (Fusarium species) | 0.2% | ) | ) |
| Gangrene (Phoma species) | 0.2% | ) | ) |
| Frost damaged tubers | 0.2% | ) | ) |
| GROUP III | |||
| Skin spot (Polyscytalum pustulans (Owen & Wakefield) M. B. Ellis) | 0.2% | ) | ) 4.0% |
| GROUP IV | |||
| Black Scurf (Rhizoctonia solani Kuhn) | 1.0% | ) 3.0% | ) |
| Provided that seed potatoes which have at least two eyes at the rose end that are wholly unaffected and less than one-eighth of whose surface area has been affected are to be deemed to be unaffected by the disease. | |||
| Common Scab (Streptomyces species) | 3.0% | ) | ) |
| Provided that seed potatoes which have at least two eyes at the rose end that are wholly unaffected and less than one-quarter of whose surface area has been affected are to be deemed to be unaffected by the disease. | |||
| GROUP V | |||
| Powdery scab (Spongospora subterranea (Wallr.) Legerh.) | 1.0% | ) | ) |
| Provided that seed potatoes which have at least two eyes at the rose end that are wholly unaffected and less than one-eighth of whose surface area has been affected are to be deemed to be unaffected by the disease. | |||
| GROUP VI | |||
| External blemishes or tubers other than diseased tubers whose shape is atypical for the variety | 1.0% | — | — |
| Superficial necrosis caused by potato virus Y | Nil | ||
| GROUP VII | |||
| Dirt or other extraneous matter | 1.0% | — | — |
PART IIIBasic seed potatoes and certified seed potatoes produced in Wales
| Column 1 | Column 2 | Column 3 | Column 4 |
|---|---|---|---|
| Specified diseases or pests, damage and defects | Individual tolerances | Group tolerances | Collective group tolerances |
| GROUP I | |||
| Wart Disease (Synchytrium endobioticum (Schlib.) Perc.) | Nil | — | — |
| Potato Tuber Eelworm (Ditylenchus destructor Thorne) | Nil | — | — |
| Potato Cyst Nematode (Globodera species infesting potatoes) | Nil | — | — |
| Ring Rot (Clavibacter michiganensis (Smith) Davis et al. spp. sepedonicus (Spieck. & Kotth.) Davis et al.) | Nil | — | — |
| Brown Rot (Ralstonia solanacearum (Smith) Yabuuchi et al.) | Nil | — | — |
| Potato Spindle Tuber Viroid | Nil | — | — |
| Colorado Beetle (Lepinotarsa decemlineata (Say)) | Nil | — | — |
| GROUP II | |||
| Blight (Phytophthora infestans (Mont.) de Bary) | 1.0% | ) | ) |
| Blackleg (Erwinia carotovora (Jones) Bergey et al. spp. atroseptica (Hellmers & Dowson) Dye or Erwinia chrysanthemi Burkholder et al. or both) | 1.0% | ) | ) |
| Soft Rots including Watery Wound Rot (Pythium ultimum Trow) | 1.0% | ) 1.0% | ) |
| Pink Rot (Phytophthora erythroseptica Pethybridge) and Pit Rot | 1.0% | ) | ) |
| Dry Rot (Fusarium species) | 1.0% | ) | ) |
| Gangrene (Phoma species) | 1.0% | ) | ) |
| Frost damaged tubers | 1.0% | ) | ) |
| Provided that in respect of seed potatoes of a Community Grade the individual tolerances listed in column 2 and the group tolerances listed in column 3 do not exceed 0.5%. | |||
| GROUP III | |||
| Skin spot (Polyscytalum pustulans (Owen & Wakefield) M. B. Ellis) | 0.5% except for A and CC classes; | ) | ) |
| 2.0% for A and CC classes only | |||
| Powdery scab (Spongospora subterranea (Wallr.) Legerh.) | 3.0% | ) 4.0% | ) 4.0% |
| Provided that seed potatoes which have at least two eyes at the rose end that are wholly unaffected and less than one-eighth of whose surface area has been affected are to be deemed to be unaffected by the disease (except where powdery scab takes its cankerous form). | |||
| GROUP IV | |||
| Black Scurf (Rhizoctonia solani Kuhn) | 3.0% | ) | ) |
| Provided that seed potatoes which have at least two eyes at the rose end that are wholly unaffected and less than one-quarter of whose surface area has been affected in respect of class A and class CC and one-eighth unaffected in respect of all other classes are to be deemed to be unaffected by the disease. | |||
| Common Scab (Streptomyces species) | 4.0% | ) | ) |
| Provided that seed potatoes which have at least two eyes at the rose end that are wholly unaffected and less than one-quarter of whose surface area has been affected are to be deemed to be unaffected by the disease. | |||
| GROUP V | |||
| External blemishes or tubers other than diseased tubers whose shape is atypical for the variety | 2.0% | 2.0% | ) |
| Superficial necrosis caused by strains of potato virus Y | 0.1% | ||
| GROUP VI | |||
| Dirt or other extraneous matter | 1.0% | — | — |
PART IVTest and trial seed potatoes
| Column 1 | Column 2 | Column 3 |
|---|---|---|
| Specified diseases or pests, damage and defects | Individual tolerances | Collective tolerances |
| Potato Tuber Eelworm (Ditylenchus destructor Thorne) | Nil | — |
| Potato Cyst Nematode (Globodera species infesting potatoes) | Nil | — |
| Ring Rot (Clavibacter michiganensis (Smith) Davis et al. spp. sepedonicus (Spieck. & Kotth.) Davis et al.) | Nil | — |
| Brown Rot (Ralstonia solanacearum (Smith) Yabuuchi et al.) | Nil | — |
| Potato Spindle Tuber Viroid | Nil | — |
| Colorado Beetle (Lepinotarsa decemlineata (Say)) | Nil | — |
| Wart Disease (Synchytrium endobioticum (Schlib.) Perc.) | Nil | — |
| Earth or other extraneous matter | 2.0 % | — |
| Dry and wet rot, except if caused by Synchytrium endobioticum, Clavibacter michiganensis (Smith) Davis et al. ssp. Sepedonicus (Spieck. & Kotth.) Davis et al. or Ralstonia solanacearum (Smith) Yabuuchi et al. | 1.0 % | ) |
| External blemishes or tubers other than diseased tubers whose shape is atypical for the variety | 3.0 % | ) 6.0 % |
| Common scab: tubers affected over more than one-third of their surface | 5.0 % | ) |
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