SCHEDULE 3 SPECIFIED DISEASES OR PESTS, DAMAGE AND DEFECTS AND TOLERANCES
Regulations 2(3), 9(3), 12(5) and 21(1)(3) and (4)

PART I Pre-basic seed potatoes of pre-basic TC class produced in Wales
Column 1	Column 2
Specified diseases or pests, damage and defects	Individual 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
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 or tubers other than diseased tubers whose shape is atypical for the variety	3.0%
GROUP VII
Dirt or other extraneous matter	1.0%

PART II Pre-basic seed potatoes of pre-basic 1, pre-basic 2, pre-basic 3 or pre-basic 4 class produced in Wales
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	—	—
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)	Nil	)	)
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 & Wakefield) M. B. Ellis)	0.2%	)	) 4.0%
GROUP IV
Black Scurf (Rhizoctonia solani Kuhn)	1.0%	) 3.0%	)
Provided that seed potatoes which have at least two eyes at the rose end that are wholly unaffected and less than one-eighth of whose surface area has been affected are to be deemed to be unaffected by the disease.			
Common Scab (Streptomyces species)	3.0%	)	)
Provided that seed potatoes which have at least two eyes at the rose end that are wholly unaffected and less than one-quarter of whose surface area has been affected are to be 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-eighth of whose surface area has been affected are to be deemed to be unaffected by the disease.			
GROUP VI
External blemishes or tubers other than diseased tubers whose shape is atypical for the variety	1.0%	—	—
Superficial necrosis caused by potato virus Y	Nil		
GROUP VII
Dirt or other extraneous matter	1.0%	—	—

PART III Basic seed potatoes and certified seed potatoes produced in Wales
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	—	—
GROUP II
Blight (Phytophthora infestans (Mont.) de Bary)	1.0%	)	)
Blackleg (Erwinia carotovora (Jones) Bergey et al. spp. atroseptica (Hellmers & Dowson) Dye or Erwinia chrysanthemi Burkholder et al. or both)	1.0%	)	)
Soft Rots including Watery Wound Rot (Pythium ultimum Trow)	1.0%	) 1.0%	)
Pink Rot (Phytophthora erythroseptica Pethybridge) and Pit Rot	1.0%	)	)
Dry Rot (Fusarium species)	1.0%	)	)
Gangrene (Phoma species)	1.0%	)	)
Frost damaged tubers	1.0%	)	)
Provided that in respect of seed potatoes of a Community Grade the individual tolerances listed in column 2 and the group tolerances listed in column 3 do not exceed 0.5%.			
GROUP III
Skin spot (Polyscytalum pustulans (Owen & Wakefield) M. B. Ellis)	0.5% except for A and CC classes;	)	)
	2.0% for A and CC classes only		
Powdery scab (Spongospora subterranea (Wallr.) Legerh.)	3.0%	) 4.0%	) 4.0%
Provided that seed potatoes which have at least two eyes at the rose end that are wholly unaffected and less than one-eighth of whose surface area has been affected are to be deemed to be unaffected by the disease (except where powdery scab takes its cankerous form).			
GROUP IV
Black Scurf (Rhizoctonia solani Kuhn)	3.0%	)	)
Provided that seed potatoes which have at least two eyes at the rose end that are wholly unaffected and less than one-quarter of whose surface area has been affected in respect of class A and class CC and one-eighth unaffected in respect of all other classes are to be deemed to be unaffected by the disease.			
Common Scab (Streptomyces species)	4.0%	)	)
Provided that seed potatoes which have at least two eyes at the rose end that are wholly unaffected and less than one-quarter of whose surface area has been affected are to be deemed to be unaffected by the disease.			
GROUP V
External blemishes or tubers other than diseased tubers whose shape is atypical for the variety	2.0%	2.0%	)
Superficial necrosis caused by strains of potato virus Y	0.1%		
GROUP VI
Dirt or other extraneous matter	1.0%	—	—

PART IV Test and trial seed potatoes
Column 1	Column 2	Column 3
Specified diseases or pests, damage and defects	Individual tolerances	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 Viroid	Nil	—
Colorado Beetle (Lepinotarsa decemlineata (Say))	Nil	—
Wart Disease (Synchytrium endobioticum (Schlib.) Perc.)	Nil	—
Earth or other extraneous matter	2.0 %	—
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 or tubers other than diseased tubers whose shape is atypical for the variety	3.0 %	) 6.0 %
Common scab: tubers affected over more than one-third of their surface	5.0 %	)