Chwilio Deddfwriaeth

The Seed Potatoes (Wales) Regulations 2016

Status:

Dyma’r fersiwn wreiddiol (fel y’i gwnaed yn wreiddiol).

PART 3Basic seed potatoes and certified seed potatoes produced in Wales

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 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
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 both0.5%))
Soft Rots including Watery Wound Rot (Pythium ultimumTrow)0.5%) 0.5%)
Pink Rot (Phytophthora erythroseptica Pethybridge) and Pit Rot0.5%))
Dry Rot (Fusarium species)0.5%))
Gangrene (Phoma species)0.5%))
Frost damaged tubers0.5%))
Any of these Group II defects that present as a wet rot symptom0.2%))
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)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
External blemishes including damaged tubers or tubers other than diseased tubers whose shape is atypical for the variety3.0%)
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 Y0.1%)
Group VI
Dirt or other extraneous matter1.0%

Yn ôl i’r brig

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