The Seed Potatoes (Wales) Regulations 2016

PART 4Test and trial seed potatoes

Column 1

Specified diseases or pests, damage and defects

Column 2

Individual tolerances

Column 3

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 ViroidNil
Colorado Beetle (Lepinotarsa decemlineata (Say))Nil
Wart Disease (Synchytrium endobioticum (Schilb) 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 matter2.0%
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 variety3.0%) 6.0%
Common Scab: tubers affected over more than one-third of their surface5.0%)

(1) The diseases, pests, damages and defects that are to be aggregated for a relevant group tolerance; collective group tolerance or collective tolerance are indicated by “)”.

(2) The diseases, pests, damages and defects that should not be aggregated for a relevant group tolerance; collective group tolerance or collective tolerance are indicated by “–”.

(3) Horizontal lines within a column indicate the extent of a relevant group tolerance; collective group tolerance or collective tolerance.