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The Seed Potatoes (Scotland) Regulations 2000

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Regulations 12(b) and 13(1) and (4)

SCHEDULE 7TOLERANCES FOR DISEASES, PESTS, DAMAGE AND DEFECTS

Tolerances

1.—(1) For the purposes of regulation 13(1)(b)–

(a)Table I, applies–

(i)to seed potatoes classified under these Regulations as being of the class Pre-basic TC; and

(ii)to pre-basic seed potatoes produced outside Scotland which are approved by Scottish Ministers as being equivalent to that class;

(b)Table II applies–

(i)to seed potatoes classified under these Regulations as being of the class Pre-basic 1 or 2; and

(ii)to pre-basic seed potatoes produced outside Scotland which are approved by Scottish Ministers as being equivalent to either of these classes;

(c)Table III applies–

(i)to seed potatoes classified under these Regulations as being of the classes VTSC1 or VTSC2; and

(ii)to seed potatoes produced in any other part of the United Kingdom which are approved by Scottish Ministers as being of a class equivalent to either of these classes;

(d)Table IV applies–

(i)to seed potatoes classified under these Regulations as being seed potatoes of a class other than VTSC1 or VTSC2; and

(ii)to seed potatoes produced in any other part of the United Kingdom which are approved by Scottish Ministers as basic seed potatoes equivalent to any of the classes other than VTSC1 or VTSC2; and

(e)Table V applies in the case of basic seed potatoes produced outside Scotland and not in the United Kingdom.

(2) Subject to paragraph (3), any tolerance in a column of any of the Tables in this Schedule expressed as a percentage is a reference to the proportion which the weight of potatoes affected by the disease, pest, damage or defect bears to the total weight of the sample taken in accordance with regulation 16(3) and Schedule 9, expressed as a percentage.

(3) In the case of dirt or other extraneous matter, any tolerance in a column of any of the Tables in this Schedule expressed as a percentage is a reference to the proportion which the weight of such matter bears to the total weight of the sample taken in accordance with regulation 16(3) and Schedule 9, expressed as a percentage.

Individual tolerances

2.  The individual tolerance set out in the entry in column 2 of Table I, II, III, IV or, as the case may be, V corresponding to the disease, pest, damage or defect set out in column 1 of those Tables is specified in the case of seed potatoes to which the Table applies in relation to the disease, pest, damage or defect to which the entry corresponds.

Group tolerances

3.  The group tolerances set out in the entry in column 3 of Table II, III or, as case may be, IV corresponding to the diseases, pests, damage or defects within Group II or III set out in column 1 of those Tables is specified in the case of seed potatoes to which the Table applies in relation to the Group to which the entry corresponds.

Collective group tolerances

4.  The collective group tolerances set out in the entry in column 4 of Table II, III, IV or, as the case may be, V corresponding to the diseases, pests, damage or defects within Groups II, III and IV set out in column 1 of those Tables is specified in the case of seed potatoes to which the Table applies in relation to those Groups.

Allowable surface area cover

5.—(1) This paragraph applies, for the purposes of regulation 13(1)(b), to seed potatoes to which Table II, III, IV or V applies.

(2) Subject to paragraph (3), an authorised officer may deem a potato in any sample of seed potatoes to which this paragraph applies not to be affected by a disease in Group III, set out in column 1 of the Table applicable to a potato of that class when, in his opinion–

(a)the surface area of the potato affected by the disease is less than the percentage surface area in the entry corresponding to the disease in column 5 of the Table; and

(b)the potato has at least two eyes at the rose end wholly unaffected by the disease.

(3) Paragraph (2) shall not apply when the disease Powdery Scab (Spongospora subterranea(Wallr.) Lagerh) takes its cankerous form.

TABLE I

PRE-BASIC TC CLASS

Column 1Column 2
Diseases, pests, damage and defectsIndividual Tolerances
GROUP I
Wart Disease (Synchytrium endobioticumSchilb.)NIL
Potato Tuber Eelworm (Ditylenchus destructorThorne)NIL
Potato Cyst Nematode (Globoderaspecies infesting potatoes)NIL
Ring Rot (Clavibacter michiganensis(Smith) Davis et al ssp.NIL
Sepedonicus (Spieck Kotth) Davis et al)
Brown Rot (Ralstonia solanacearum (Smith) Yabuuchi et al)NIL
Potato Tuber Moth (Phthorimaea operculella (Zell)NIL
Potato Spindle Tuber ViroidNIL
Colorado Beetle (Leptinotarsa decemlineata (Say))NIL
GROUP II
Blight (Phytophthora infestans (Mont) de Bary)NIL
Blackleg (Erwinia carotovora Jones) Bergey et al ssp atrosepticaNIL
(Hellmers & Dowson) Dye) or Erwinia chrysanthemi Burkholder et al or both
Gangrene/ Dry Rot/Wet RotNIL
Frost damaged tubersNIL
GROUP II
Skin spot (Polyscytalum pustulans (Owen & Wakefield) M. B. EllisNIL
Black scurf (Rhizoctonia solani Kuhn)NIL
Common scab (Streptomyces species)NIL
Powdery scab (Spongospora subterranea (Wallr) Lagerh)NIL
GROUP IV
External blemishes or tubers other than diseased tubers whose shape is atypical for the variety3%
GROUP V
Dirt or other extraneous matter1%

TABLE II

PRE-BASIC 1 AND PRE-BASIC 2 CLASS

Column 1Column 2Column 3Column 4Column 5
Diseases, pests, damage and defectsIndividual tolerancesGroup TolerancesCollective group tolerancesAllowable % surface area cover
GROUP I
Wart Disease (Synchytrium endobioticumSchilb.)NIL
Potato Tuber Eelworm (Ditylenchus destructorThorne)NIL
Potato Cyst Nematode (Globoderaspecies infesting potatoes)NIL
Ring Rot (Clavibacter michiganensis (Smith) Davis et al ssp. Sepedonicus (Spieck Kotth) Davis et al)NIL
Brown Rot (Ralstonia solanacearum (Smith) Yabuuchi et al)NIL
Potato Tuber Moth (Phthorimaea operculella (Zell)NIL
Potato Spindle Tuber ViroidNIL
Colorado Beetle (Leptinotarsa decemlineata (Say))NIL
GROUP II
Blight (Phytophthora infestans (Mont) de Bary0.1%0.2%
Blackleg (Erwinia carotovora (Jones) Bergey et al ssp atroseptica (Hellmers & Dowson) Dye) or Erwinia chrysanthemi Burkholder et al or bothNil0.2%4.0%
Gangrene/ Dry Rot/Wet Rot0.1%0.2%4.0%
Frost damaged tubers0.1%0.2%4.0%
GROUP III
Skin spot (Polyscytalum pustulans (Owen & Wakefield) M. B. Ellis0.2%3.0%4.0%
Black scurf (Rhizoctonia solani Kuhn)0.5%3.0%4.0%12.5%
Common scab (Streptomyces species)3.0%3.0%4.0%25.0%
Powdery scab (Spongospora subterranea (Wallr) Lagerh)0.5%3.0%4.0%12.5%
GROUP IV
External blemishes or tubers other than diseased tubers whose shape is atypical for the variety1.0%4.0%
GROUP V
Dirt or other extraneous matter1.0%

TABLE III

VTSC CLASS AND EQUIVALENT IN OTHER PARTS OF THE UK

Column 1Column 2Column 3Column 4Column 5
Diseases, pests, damage and defectsIndividual tolerancesGroup TolerancesCollective group tolerancesAllowable % surface area cover
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 ssp sepedonicus (Spieck. & Kotth.) Davis et al)NIL
Brown Rot (Ralstonia solancearum (Smith) Yabuuchi et al.)NIL
Potato Tuber Moth (Phthorimaea operculella (Zell)NIL
Potato Spindle Tuber ViroidNIL
Colorado Beetle (Leptinotarsa decemlineata (Say))NIL
GROUP II
Blight (Phytophthora infestans (Mont.) de Bary0.5%0.5%4.0.%
Blackleg (Erwinia carotovora (Jones) Bergey et al. ssp atroseptica (Hellmers & Dowson) Dye) or Erwinia chrysanthemi Burkholder et al or bothNIL0.5%4.0.%
Wet Rot including: Watery Wound Rot (Pythium ultimumTrow)0.5%0.5%4.0.%
Pink Rot (Phytophthora erythroseptica Pethybridge) and Pit Rot0.5%0.5%4.0.%
Dry Rot (Fusarium species)0.5%0.5%4.0.%
Gangrene (Phoma species)0.5%0.5%4.0%
Frost damaged tubers0.5%0.5%4.0.%
GROUP III
Skin Spot (Polyscytalum pustulans (Owen & Wakefield) M. B. Ellis)0.5%3.0.%4.0.%
Black Scurf (Rhizoctonia solani Kuhn)1.5%3.0%4.0.%25.0%
Common Scab (Streptomyces species)3.0%3.0.%4.0.%25.0%
Powdery Scab (Spongospora subterranea (Wallr) Lagerh.)1.5%3.0%4.0.%12.5%
GROUP IV
External blemishes or tubers other than diseased tubers whose shape is atypical for the variety2.0%4.0.%
GROUP V
Dirt or other extraneous matter1.0%1.0%

TABLE IV

BASIC SEED POTATOES OTHER THAN VTSC CLASS AND EQUIVALENT IN OTHER PARTS OF THE UK

Column 1Column 2Column 3Column 4Column 5
Diseases, pests, damage and defectsIndividual tolerancesGroup TolerancesCollective group tolerancesAllowable % surface area cover
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 ssp sepedonicus (Spieck. & Kotth.) Davis et al)NIL
Brown Rot (Ralstonia solancearum (Smith) Yabuuchi et al.)NIL
Potato Tuber Moth (Phthorimaea operculella (Zell)NIL
Potato Spindle Tuber ViroidNIL
Colorado Beetle (Leptinotarsa decemlineata (Say))NIL
GROUP II
Blight (Phytophthora infestans (Mont.) de Bary0.5%0.5%4.0%
Blackleg (Erwinia carotovora (Jones) Bergey et al. ssp atroseptica (Hellmers & Dowson) Dye) or Erwinia chrysanthemi Burkholder et al or both0.5%0.5%4.0%
Wet Rot including: Watery Wound Rot (Pythium ultimum Trow)0.5%0.5%4.0%
Pink Rot (Phytophthora erythroseptica Pethybridge) and Pit Rot0.5%0.5%4.0%
Dry Rot (Fusarium species)0.5%0.5%4.0%
Gangrene (Phoma species)0.5%0.5%4.0%
Frost damaged tubers0.5%0.5%4.0%
GROUP III
Skin Spot (Polyscytalum pustulans (Owen & Wakefield) M. B. Ellis)2.0%4.0%4.0%12.5%
Powdery Scab (Spongospora subterranea (Wallr) Lagerh.)3.0%4.0%4.0%12.5%
Black Scurf (Rhizoctonia solani Kuhn)3.0%4.0%4.0%25.0%
Common Scab (Streptomyces species)4.0%4.0%4.0%25.0%
GROUP IV
External blemishes or tubers other than diseased tubers whose shape is atypical for the variety2.0%4.0%4.0%
GROUP V
Dirt or other extraneous matter1.0%

TABLE V

BASIC SEED POTATOES PRODUCED OUTSIDE SCOTLAND AND NOT PRODUCED IN THE UK

Column 1Column 2Column 3Column 4Column 5
Diseases, pests, damage and defectsIndividual tolerancesGroup TolerancesCollective group tolerancesAllowable % surface area cover
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 ssp sepedonicus (Spieck. & Kotth.) Davis et al)NIL
Brown Rot (Ralstonia solancearum (Smith) Yabuuchi et al.)NIL
Potato Tuber Moth (Phthorimaea operculella Zell)NIL
Potato Spindle Tuber ViroidNIL
Colorado Beetle (Leptinotarsa decemlineata (Say))NIL
GROUP II
Dry and Wet Rot0.5%6.0%
GROUP III
Common Scab (Streptomyces species)5.0.%6.0%33.3%
GROUP IV
External blemishes or tubers other than diseased tubers whose shape is atypical for the variety3.0%6.0%
GROUP V
Dirt or other extraneous matter2.0%

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