Annex Conditions for placing on the market of pre-basic seed potatoes as Union grades PBTC and PBF1

The conditions for pre-basic seed potatoes of Union grade PBTC shall be as follows:

1. (a)

   conditions concerning seed potatoes:

   1. (i)

      plants not breeding true to the variety, or plants of a different variety, shall not be present in the crop;

   2. (ii)

      plants, including tubers, are produced through micro-propagation;

   3. (iii)

      plants, including tubers, are produced in a protected facility and in a growing medium which is free from pests;

   4. (iv)

      tubers shall not be multiplied beyond the first generation;

   5. (v)

      plants shall comply with the following thresholds concerning the presence of RNQPs, or symptoms caused by the respective RNQP, as set out in the following table:

      RNQPs or symptoms caused by RNQPs	Threshold for the presence of RNQPs on the growing plants for pre-basic seed potatoes of Union grade PBTC
      Blackleg ( Dickeya Samson et al . spp. [1DICKG]; Pectobacterium Waldee emend. Hauben et al . spp. [1PECBG])	0 %
      Candidatus Liberibacter solanacearum Liefting et al . [LIBEPS]	0 %
      Candidatus Phytoplasma solani Quaglino et al . [PHYPSO]	0 %
      Mosaic symptoms caused by viruses and symptoms caused by Potato leaf roll virus [PLRV00]	0 %
      Potato spindle tuber viroid [PSTVD0]	0 %

      RNQPs or symptoms caused by RNQPs	Threshold for the presence of RNQPs on the direct progeny of pre-basic seed potatoes of Union grade PBTC
      Symptoms of virus infection	0 %.

2. (b)

   conditions concerning lots:

   1. (i)

      they shall be free from seed potatoes affected by rots;

   2. (ii)

      they shall be free from seed potatoes affected by common scab;

   3. (iii)

      they shall be free from seed potatoes excessively shrivelled due to dehydration;

   4. (iv)

      they shall be free from seed potatoes with external blemishes, including misshapen or damaged tubers;

   5. (v)

      lots of pre-basic seed potatoes shall comply with the following thresholds concerning the presence of RNQPs, or symptoms caused by the respective RNQPs as set out in the following table:

      RNQPs or symptoms caused by RNQPs	Threshold for the presence of RNQPs on the lots of pre-basic seed potatoes of Union grade PBTC by mass
      Candidatus Liberibacter solanacearum Liefting et al . [LIBEPS]	0 %
      Ditylenchus destructor Thorne [DITYDE]	0 %
      Black scurf as caused by Thanatephorus cucumeris (A.B. Frank) Donk [RHIZSO]	0 %
      Powdery scab as caused by Spongospora subterranea (Wallr.) Lagerh. [SPONSU]	0 %.

The conditions for pre-basic seed potatoes of Union grade PB shall be as follows:

1. (a)

   conditions concerning seed potatoes:

   1. (i)

      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. (ii)

      plants shall comply with the following thresholds concerning the presence of RNQPs, or symptoms caused by the respective RNQPs, as set out in the following table:

      RNQPs or symptoms caused by RNQPs	Threshold for the presence of RNQPs on the growing plants for pre-basic seed potatoes of Union grade PB
      Blackleg ( Dickeya Samson et al . spp . [1DICKG]; Pectobacterium Waldee emend. Hauben e t al . spp . [1PECBG])	0 %
      Candidatus Liberibacter solanacearum Liefting et al . [LIBEPS]	0 %
      Candidatus phytoplasma solani Quaglino et al . [PHYPSO]	0 %
      Mosaic symptoms caused by viruses and symptoms caused by Potato leaf roll virus [PLRV00]	0,1  %
      Potato spindle tuber viroid [PSTVD0]	0 %

      RNQPs or symptoms caused by RNQPs	Threshold for the presence of RNQPs on the direct progeny of pre-basic seed potatoes of Union grade PB
      Symptoms of virus infection	0,5  %;

2. (b)

   tolerances applicable to lots, as regards the following impurities, blemishes and diseases:

   1. (i)

      seed potatoes affected by rots, other than ring rot or brown rot, shall not exceed 0,2  % by mass;

   2. (ii)

      seed potatoes affected by common scab over more than one third of their surface, shall not exceed 5,0  % by mass;

   3. (iii)

      shrivelled tubers due to excessive dehydration or dehydration caused by silver scurf, shall not exceed 0,5  % by mass;

   4. (iv)

      seed potatoes with external blemishes, including misshapen or damaged tubers, shall not exceed 3,0  % by mass;

   5. (v)

      the presence of earth and extraneous matter shall not exceed 1,0  % by mass;

   6. (vi)

      lots of pre-basic seed potatoes shall comply with the following thresholds concerning the presence of RNQPs, or symptoms caused by the respective RNQPs as set out in the following table:

      RNQPs or symptoms caused by RNQPs	Threshold for the presence of RNQPs on the lots of pre-basic seed potatoes of Union grade PB by mass
      Candidatus Liberibacter solanacearum Liefting et al . [LIBEPS]	0 %
      Ditylenchus destructor Thorne [DITYDE]	0 %
      Black scurf affecting tubers over more than 10 % of their surface as caused by Thanatephorus cucumeris (A.B. Frank) Donk [RHIZSO]	1,0  %
      Powdery scab affecting tubers over more than 10 % of their surface as caused by Spongospora subterranea (Wallr.) Lagerh. [SPONSU]	1,0  %;

   7. (vii)

      the total percentage of seed potatoes covered by tolerances, as referred to in points (i) to (iv) and (vi), shall not exceed 6,0  % by mass.