ANNEX

Conditions for placing on the market of pre-basic seed potatoes as Union grades PBTC and PB
(1)

The conditions for pre-basic seed potatoes of Union grade PBTC shall be as follows:
1. conditions concerning seed potatoes:
  1. plants not breeding true to the variety, or plants of a different variety, shall not be present in the crop;
  2. plants affected by blackleg shall not be present in the crop;
  3. in the direct progeny, virus infection shall not be present in the crop;
  4. plants with mosaic symptoms or symptoms caused by leaf roll virus shall not be present in the crop;
  5. the plants, including tubers, are produced through micro-propagation;
  6. the plants, including tubers, are produced in a protected facility and in a growing medium which is free from pests;
  7. tubers shall not be multiplied beyond the first generation.
2. lots shall be free from seed potatoes falling under any of the following points:
  1. they are affected by rots;
  2. they are affected by black scurf;
  3. they are affected by common scab;
  4. they are affected by powdery scab;
  5. they have become excessively shrivelled due to dehydration;
  6. they have external blemishes, including misshapen or damaged tubers.
(2)

The conditions for pre-basic seed potatoes of Union grade PB shall be as follows:
1. conditions concerning seed potatoes:
  1. the number of plants not breeding true to the variety and the number of plants of a different variety together, shall not exceed 0,01 %;
  2. plants shall be free from symptoms of blackleg;
  3. the number of growing plants with mosaic symptoms or symptoms caused by leaf roll virus shall not exceed 0,1 %;
  4. in the direct progeny, the number of plants with symptoms caused by any virus, shall not exceed 0,5 %.
2. tolerances applicable to lots, as regards the following impurities, blemishes and diseases:
  1. seed potatoes affected by rots, other than ring rot or brown rot, shall not exceed 0,2 % by mass;
  2. seed potatoes affected by black scurf over more than 10,0 % of their surface, shall not exceed 1,0 % by mass;
  3. seed potatoes affected by common scab over more than one third of their surface, shall not exceed 5,0 % by mass;
  4. seed potatoes affected by powdery scab over more than 10,0 % of their surface, shall not exceed 1,0 % by mass;
  5. shrivelled tubers due to excessive dehydration or dehydration caused by silver scurf, shall not exceed 0,5 % by mass;
  6. seed potatoes with external blemishes, including misshapen or damaged tubers, shall not exceed 3,0 % by mass;
  7. the presence of earth and extraneous matter shall not exceed 1,0 % by mass;
  8. the total percentage of seed potatoes covered by tolerances, as referred to in points (i) to (vi), shall not exceed 6,0 % by mass.