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The Seed Potatoes (England) Regulations 2015
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- UK Statutory Instruments
- 2015 No. 1953
- SCHEDULE 3
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Regulation 2(3)
SCHEDULE 3Specified diseases or pests, damage and defects and tolerances
This schedule has no associated Explanatory Memorandum
PART 1Pre-basic seed potatoes of Union grade PBTC produced in England
| Column 1 | Column 2 |
|---|---|
| Specified diseases or pests, damage and defects | Individual tolerances |
| Group 1 | |
| 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, including damaged tubers or tubers other than diseased tubers whose shape is atypical for the variety | Nil |
| Superficial necrosis caused by potato virus Y | Nil |
| Shrivelled tubers due to excessive dehydration or dehydration caused by silver scurf (Helminthosporium solani) | Nil |
| Group VII | |
| Dirt or other extraneous matter | 1.0% |
PART 2Pre-basic seed potatoes of Union grade PB produced in England
| 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 infest-ing 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 | 0.2% | ) | ) |
| Soft Rots including: Watery Wound Rot (Pythium ultimumTrow) | 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% | ) | ) 6.0% |
| Group IV | |||
Black Scurf (Rhizoctonia solani Kuhn) Provided that seed potatoes which have at least two eyes at the rose end that are wholly unaffected and less than one-tenth of whose surface area has been affected are deemed to be unaffected by the disease | 1.0% | ) 5.0% | ) |
Common Scab (Streptomyces species) Provided that seed potatoes which have at least two eyes at the rose end that are wholly unaffected and less than one-third of whose surface area has been affected are deemed to be unaffected by the disease | 5.0% | ) | ) |
| Group V | |||
Powdery scab (Spongospora subterranea (Wallr) Legerh) Provided that seed potatoes which have at least two eyes at the rose end that are wholly unaffected and less than one-tenth of whose surface area has been affected are deemed to be unaffected by the disease | 1.0% | ) | ) |
| Group VI | |||
| External blemishes including damaged tubers or tubers other than diseased tubers whose shape is atypical for the variety | 3.0% | ) | – |
| Superficial necrosis caused by potato virus Y | Nil | ) 3.0% | – |
| Shrivelled tubers due to excessive dehydration or dehydration caused by silver scurf (Helminthosporium solani) | 0.5% | ) | – |
| Group VII | |||
| Dirt or other extraneous matter | 1.0% | – | – |
PART 3Basic seed potatoes and certified seed potatoes produced in England
| 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) | 0.5% | ) | ) |
| Blackleg (Erwinia carotovora (Jones) Bergey et al spp) atroseptica (Hellmers & Dowson) Dye or Erwinia chrysanthemi Burkholder et al or both | 0.5% | ) | ) |
| Soft Rots including Watery Wound Rot (Pythium ultimumTrow) | 0.5% | ) 0.5% | ) |
| Pink Rot (Phytophthora erythroseptica Pethybridge) and Pit Rot | 0.5% | ) | ) |
| Dry Rot (Fusarium species) | 0.5% | ) | ) |
| Gangrene (Phoma species) | 0.5% | ) | ) |
| Frost damaged tubers | 0.5% | ) | ) |
| Any of these Group II defects that present as a wet rot symptom | 0.2% | ) | ) |
| Group III | |||
| Skin spot (Polyscytalum pustulans (Owen & Wakefield) M B Ellis) | 0.5% except Union grade E, Union grade A and Union grade B grades; 2.0% for Union grade E, Union grade A and Union grade B grades only | ) | ) |
Powdery scab (Spongospora subterranea (Wallr) Legerh) Provided that seed potatoes which have at least two eyes at the rose end that are wholly unaffected and less than one-tenth of whose surface area has been affected are deemed to be unaffected by the disease (except where powdery scab takes its cankerous form) | 3.0% | ) 5.0% | ) 6.0% for basic seed potatoes and 8.0% for certified seed potatoes |
| Group IV | |||
Black Scurf (Rhizoctonia solani Kuhn) Provided that seed potatoes which have at least two eyes at the rose end that are wholly unaffected and less than one-tenth of whose surface area has been affected are deemed to be unaffected by the disease | 5.0% | ) | ) |
Common Scab (Streptomyces species) Provided that seed potatoes which have at least two eyes at the rose end that are wholly unaffected and less than one-third of whose surface area has been affected are deemed to be unaffected by the disease | 5.0% | ) | ) |
| Group V | |||
| External blemishes including damaged tubers or tubers other than diseased tubers whose shape is atypical for the variety | 3.0% | ) | – |
| Shrivelled tubers due to excessive dehydration or dehydration caused by silver scurf (Helminthosporium solani) | 1.0% | ) 3.0% | – |
| Superficial necrosis caused by strains of potato virus Y | 0.1% | ) | – |
| Group VI | |||
| Dirt or other extraneous matter | 1.0% | – | – |
PART 4Test 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 | – |
| 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 | – |
| 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 including damaged tubers 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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