PART 1Pre-basic seed potatoes of Union grade PBTC produced in Wales
Column 1 Specified diseases or pests, damage and defects | Column 2 Individual tolerances |
---|---|
Group 1 | |
Wart Disease (Synchytrium endobioticum (Schilb) 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% |