Part 2 Pre-basic seed potatoes of GB grade PB produced in WalesF1F2
| 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 | - | - |
| Candidatus Liberibacter solanacearum Liefting et al | Nil | - | - |
| Candidatus Phytoplasma solani Quaglino et al | Nil | - | - |
| Group II | |||
| Blight (Phytophthora infestans (Mont) de Bary) | 0.2% | ) | ) |
| Blackleg (Dickeya Samson et al. spp. or Pectobacterium Waldee emend. Hauben et al. spp. or both) | 0.2% | ) | ) |
| 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 & Wake-field)) M B Ellis | 0.2% | ) | ) 6.0% |
| Group IV | |||
| Black scurf as caused by Thanatephorus cucumeris (A.B. Frank) Donk 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) | 5.0% | ) | ) |
| 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 | |||
| 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-tenth of whose surface area has been affected are deemed to be unaffected by the disease | |||
| 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% | - | - |
Annotations
Textual amendments
- F1
Sch. 3 Pts. 2, 3 substituted (29.8.2020) by The Marketing of Seed, Plant and Propagating Material (Wales) Regulations 2020 (S.I. 2020/833), regs. 1, 5(4)(c)
- F2
Word in Sch. 3 Pt. 2 heading substituted (31.12.2020) by The Seed Potatoes (Wales) (Amendment) (EU Exit) Regulations 2019 (S.I. 2019/738), regs. 1(2), 2(14)(a) (as amended by S.I. 2020/1573, regs. 1(2)(b), 2(3)(l)); 2020 c. 1, Sch. 5 para. 1(1)