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The Seed Potatoes (Scotland) Regulations 2015

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Regulations 2(1) and8(2) and (4)

SCHEDULE 2SCERTIFICATION AND GRADING: SOURCE MATERIAL REQUIREMENTS, OTHER REQUIREMENTS AND TOLERANCES

This schedule has no associated Policy Notes

1.  In this Schedule.—S

(a)Table I sets out the applicable requirements as regards source material, other requirements and tolerances in respect of the certification and grading of pre-basic seed potatoes; and

(b)Table II sets out the applicable requirements as regards source material, other requirements and tolerances in respect of—

(i)the certification and grading of basic seed potatoes; and

(ii)the certification of test and trial seed potatoes.

2.  The percentages specified in column 4 of Tables I and II reflect the maximum permitted proportion, expressed as a percentage, which the number of growing plants affected by the disease or varietal impurity may bear against the total number of plants in the sample.S

TABLE I

PRE-BASIC SEED POTATOES

Column 1UnionGradeColumn 2Source MaterialColumn 3Other RequirementsColumn 4Tolerances
PBTCNuclear stock or a crop which has been approved in writing by the Scottish Ministers.

The seed potatoes are—

(a)grown in a unit officially approved for production of seed potatoes of the Union grade PBTC;

(b)kept free, as far as practicable, from diseases and aphids by appropriate husbandry measures; and

(c)the first generation of this stock.

A sample of the seed potatoes taken during an official examination must not exceed the following tolerances—

(a)deviations from variety and type – nil;

(b)Blackleg (Pectobacterium spp.) – nil;

(c)Potato Virus Y, Potato Virus A and Potato Leafroll Virus – nil;

(d)total virus (including those mentioned in paragraph (c)) - nil;

(e)Dickeya spp. – nil; and

(f)virus in direct progeny – nil.

PB

(a)Stock of seed potatoes of the Union grade PBTC produced in the immediately preceding growing season which was either—

(i)certified and determined to meet the requirements of that grade; or

(ii)inspected by an authorised officer and found to have met the requirements of that grade and retained by the grower; or

(b)a crop which has been approved in writing by the Scottish Ministers.

The seed potatoes—

(a)are grown by a person whose facilities, test methods, planting arrangements and procedure for keeping records in relation to production of seed potatoes are acceptable to the Scottish Ministers;

(b)are grown in the year of application for certification on an agricultural unit on which are grown only—

(i)pre-basic seed potatoes; or

(ii)basic seed potatoes of Union grade S which are grown directly from pre-basic seed potatoes; and

(c)must not exceed the fourth field generation of the particular stock.

A sample of the seed potatoes taken during an official examination must not exceed the following tolerances—

(a)deviations from variety and type – 0.01%;

(b)Blackleg (Pectobacteriumspp.) – nil;

[F1(c) Potato Virus Y, Potato Virus A and Potato Leafroll Virus – nil,]

(d)total virus (including those mentioned in paragraph (c)) – 0.1%;

(e)Dickeya spp. –nil; and

(f)virus in direct progeny – 0.5%.

TABLE II

BASIC SEED POTATOES AND TEST AND TRIAL SEED POTATOES

Column 1UnionGradeColumn 2Source MaterialColumn 3Other requirementsColumn 4Tolerances
S

(a)Stock of seed potatoes of the Union grade PBTC or PB produced in the immediately preceding growing season which was either—

(i)certified and determined to be of the relevant grade; or

(ii)inspected by an authorised officer and found to have met the requirements of the relevant grade and retained by the grower; or

(b)a crop which has been approved in writing by the Scottish Ministers.

The seed potatoes must not exceed the fifth field generation of the particular stock.

A sample of the seed potatoes taken during an official examination must not exceed the following tolerances—

(a)deviations from variety and type - 0.1%;

(b)Blackleg (Pectobacteriumspp.) - 0.1%;

(c)Potato Virus Y, Potato Virus A and Potato Leafroll Virus - 0.02%;

(d)total virus (including those mentioned in paragraph (c)) - 0.2%;

(e)Dickeya spp. –nil; and

(f)virus in direct progeny – 1.0%.

SE

(a)Stock of seed potatoes of the Union grade PBTC, PB, or S produced in the immediately preceding growing season which was either—

(i)certified and determined to be of the relevant grade; or

(ii)inspected by an authorised officer and found to have met the requirements of the relevant grade and retained by the grower; or

(b)a crop which has been approved in writing by the Scottish Ministers.

The seed potatoes must not exceed the sixth field generation of the particular stock.

A sample of the seed potatoes taken during an official examination must not exceed the following tolerances—

(a)deviations from variety and type - 0.1%;

(b)Blackleg (Pectobacteriumspp.) - 0.5%;

(c)Potato Virus Y, Potato Virus A and Potato Leafroll Virus - 0.1%;

(d)total virus (including those mentioned in paragraph (c)) - 0.5%;

(e)Dickeya spp. – nil; and

(f)virus in direct progeny – 2.0%.

E

(a)Stock of seed potatoes of the Union grade PBTC, PB, S or SE produced in the immediately preceding growing season which was either—

(i)certified and determined to be of the relevant grade; or

(ii)inspected by an authorised officer and found to have met the requirements of the relevant grade and retained by the grower; or

(b)a crop which has been approved in writing by the Scottish Ministers.

The seed potatoes must not exceed the seventh field generation of the particular stock.

A sample of the seed potatoes taking during an official examination must not exceed the following tolerances—

(a)deviations from variety and type -0.1%;

(b)Blackleg (Pectobacteriumspp.) - 1.0%;

(c)Potato Virus Y, Potato Virus A and Potato Leafroll Virus - 0.4%;

(d)total virus (including those mentioned in paragraph (c)) - 0.8%;

(e)Dickeya spp.- nil; and

(f)virus in direct progeny - 4.0%.

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