- Latest available (Revised) - English
- Latest available (Revised) - Welsh
- Original (As made) - English
- Original (As made) - Welsh
This is the original version (as it was originally made).
Column 1 Specified diseases or pests, damage and defects | Column 2 Individual tolerances | Column 3 Group tolerances | Column 4 Collective group tolerances |
---|---|---|---|
Group I | |||
Wart Disease (Synchytrium endobioticum (Schilb) 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) | 1.0% | ) 5.0% | ) |
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 | |||
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% | – | – |
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