B 2157
Suppliment tal-Gazzetta tal-Gvern ta’ Malta Nru. 20,461, 13 ta’ Awwissu, 2020
Taqsima  B
____________________________________________________________________B 2157
L.N. 331 of 2020
PLANT QUARANTINE ACT
(CAP. 433)
Seeds of Agricultural Plants and Vegetables 
(Amendment No. 2) Regulations, 2020  
IN EXERCISE of the powers confer red by article 32 of the Plant
Quarantine Act, the Minister for Agriculture, Fisheries and Animal
Rights has made the following regulations:-
Citation and 
scope.
S.L. 433. 30.1. (1) The title of these regulations is the Seeds of
Agricultural Plants and Vegetables (Amendment No. 2) Regulation s,
2020 and these regulations shall be read and construed as one w ith the
Seeds of Agricultural Plants and Vegetables, hereinafter referr ed to as
"the principal regulations". 
 (2) The scope of these regulations is to transpose Commission
Implementing Directive (EU) 2020/177 amending Council Directive s
66/401/EEC, 66/402/EEC, 2002/55/EC and 2002/56/EC and
Commission Implementing Directive 2014/21/EU as regards pests o f
plants on seeds. 
Renumbers 
tables to the 
principal regulations. 2. The tables to the principal regulations shall be renumbered
as follows: 
(a) tables 1.8, 1.9, 1.10, 1.11, 1.12, 1.13, 1.14, 1.15, 1.16,
1.17, 1.18, 1.19 and 1.20  shall be renumbered as tables 1.9, 1.14,
1.15, 1.16, 1.17, 1.19, 1.20, 1.21, 1.31, 1.32, 1.33, 1.34 and 1.35
respectively. 
(b) the words  "Table 1.8" in item 1 Section II Part 5,
"Isolation distances" of Schedule II to the principal regulationsshall be substituted by the words "Table 1.9"; 
(c)  the words "Table 1.9" in Item 1 Section I Part 1 A of
Schedule III to the principal regulations shall be substituted bythe words  "Table 1.14";
(d) the words "Table 1.10" in Item 1 Section I Part1 B of
Schedule III to the principal regulations  shall be substituted bythe words "Table 1.15"; 
(e)  the words "Table 1.11" in Table 1.32 in Item 1
Section I of Schedule IV to the principal regulations  shall be
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substituted by the words "Table 1.16"; 
(f)  the words "Table 1.12 in Item 1 Section I Part 3 of
Schedule III to the principal regulations  shall be substituted by
the words "Table 1.17" wherever they occur; 
(g)  the words "Table 1.12" in Table 1.32 in Item 1
Section I of Schedule IV to the principal regulations  shall besubstituted by the words "Table 1.17"; 
(h)  The words "Table 1.13" in Item 1 Section II Part 2.
A. 2. of Schedule III to the pr incipal regulations shall be
substituted by the words "Table 1.19" wherever they occur; 
(i)  the words "Table 1.13" in table 1.33 in Item 1
Section II of Schedule IV to the principal regulations shall be
substituted by the words "Table 1.19"; 
(j)  the words "Table 1.14" in Item 1 Section II Part 2 A
2(e) and (g) of Schedule III to the principal regulations  shal l be
substituted by the words "Table 1.20"; 
(k)  the words "Table 1.14 in Item 1 Section II Part 2 B
of Schedule III to the principal regulations  shall be substitu ted
by the words "Table 1.20"; 
(l)  the words "Table 1.14" in Item 1 Section II Part 2 C
of Schedule III to the principal regulations  shall be substitu ted
by the words "Table 1.20" wherever they occur; 
(m)  the words "Table 1.15" in Item 1 Section II Part 2 A
2 (f) of Schedule III to the principal regulations  shall besubstituted by the words "Table 1.21"; 
(n)  the words "Table 1.15" in Item 1 Section II Part 2 B
of Schedule III to the principal regulations  shall be substitu ted
by the words "Table 1.21" wherever they occur; 
(o)  the words "Table 1.15" in Item 1 Section II Part 2 B
(j) of Schedule III to the principal regulations shall be subst ituted
by the words "Table 1.21"; 
(p)  the words "Table 1.15" in Item 1 Section II Part 2 C
of Schedule III to the principal regulations  shall be substitu ted
by the words "Table 1.21"; 
(q)  the words "Table 1.15" in table 1.33 in Item 1
Section II of Schedule IV to the principal regulations  shall b e
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substituted by the words "Table 1.21"; 
(r)  the words "Table 1.16" in Item 2. Section 3 of
Schedule III to the principal regulations shall be substituted by
the words  "Table 1.31"; 
(s)  the words "Table 1.16" in table 1.17 in Item 1
Section I Part 3 of Schedule III to the principal regulations  bythe words "Table 1.32"; 
(t)  the words "Table 1.17" in Item 1 Section I Part 2 of
Schedule III to the principal regulations  shall be substituted by
the words "Table 1.32"; 
(u)  the words "Table 1.17" in Item 1 Section I of
Schedule IV to the principal regulations shall be substituted b y
the words  "Table 1.32"; 
(v)  the words "Table 1.18" in table 1.19 in Item 1
Section II 2 A 2 of Schedule III to the principal regulations s hall
be substituted by the words  "Table 1.33"; 
(w)  the words "Table 1.18" in table 1.21 in Item 1
Section II Part 2 B 2 of Schedule III to the principal regulationsshall be substituted by the words "Table 1.33"; 
(x)  the words "Table 1.18" in Item 1 Section II Part 2 B
(f) of Schedule III to the principal regulations  shall besubstituted by the words "Yable 1.33"; 
(y)  the words "Table 1.18" in Item 1 Section II of
Schedule IV to the principal regulations  shall be substituted bythe words "Table 1.33"; 
(z)  the words "Table 1.19" in Item 2 A. of Schedule IV
to the principal regulations shall be substituted by the words"Table 1.34"; and 
(aa)  the words "Table 1.20" in Item 2 B. of Schedule IV
to the principal regulations  shall be substituted by the words"Table 1.35". 
Amends 
Schedule II to the principal 
regulations. 3. Schedule II to the principal regulations shall be amended as
follows: 
(a) item 1 Section I Part 2 "Crop health" thereof shall be
substituted by the following:
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"The crop shall be practically free from any pests
which reduce the usefulness and quality of the seed.
The crop shall also comply with the requirements
concerning Union quarantine pests, protected zone
quarantine pests and regulated non-quarantine pests
("RNQPs") provided for in implementing acts adoptedpursuant to Regulation (EU) 2016/2031 as well as the
measures adopted pursuant to Article 30(1) of that
Regulation.";
(b) item1 Section II Part 2 "Crop health" thereof shall be
substituted by the following: 
"(a) The crop shall be practically free from any pests
which reduce the usefulness and quality of the seed.
The crop shall also comply with the requirements
concerning Union quarantine pests, protected zone quarantine
pests and regulated non-quarantine pests ("RNQPs") provided
for in implementing acts adopted pursuant to Regulation (EU)2016/2031 as well as the measures adopted pursuant to Article
30(1) of that Regulation;
(b) The presence of RNQPs on the crop and the
respective categories shall comply with the followingrequirements as set out in table 1.8 below:
Table 1.8: 
";
(c) in section III thereof, the words under "Seed
potatoes" shall be substituted by the words: RNQPs or symptoms 
caused by RNQPsPlants for 
planting 
(genus or 
species)Thresholds 
for the 
production 
of pre-basic 
seedThresholds 
for the 
production 
of basic seedThresholds 
for the 
production 
of certified 
seed
1 2 345
Clavibactermichiganensis  
ssp. insidiosus  
(McCulloch 1925) 
Davis et al. [CORBIN]Medicago 
sativa  L.0% 0% 0%
Ditylenchus dipsaci  
(Kuehn) Filipjev 
[DITYDI]Medicago 
sativa  L.0% 0% 0%
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"Pre-basic seed potatoes
Minimum conditions for pre-basic seed potatoes
1. It has to be ensured that pre-basic seed potatoes
satisfy the following minimum conditions:
(a) they derive from mother plants which are free from
the following pests: Pectobacterium  spp., Dickeya  spp.,
Candidatus  Liberibacter solanacearum , Candidatus
Phytoplasma solani, Potato spindle tuber viroid, Potato leaf roll
virus, Potato virus A, Potato virus M, Potato virus S, Potato virus
X, and Potato virus Y;
(b) the number of growing plan ts not breeding true to the
variety and the number of plants of a different variety togethe r,
shall not exceed 0.01%;
(c) the maximum number of field generations shall be
four;
(d) RNQPs, or symptoms caused by the respective
RNQPs, shall not be present above the thresholds on the pre-
basic seed potatoes as set out in tables 1.10 and 1.11 below:
Table 1.10: 
RNQPs or symptoms caused by 
RNQPsThreshold for the presence of 
RNQPs on the growing plants for 
pre-basic seed potatoes
12
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]0.1%
Potato spindle tuber viroid [PSTVD0] 0%
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Table 1.11: 
2. It has to be provided that pre-basic seed potatoes may
be marketed as "Union grades PBTC" and "Union grade PB", in
accordance with the conditions set out in the Schedule.
3. Compliance with the requirements of points (b) and
(d) of paragraph 1 shall be established through official fieldinspections. In case of doubt, those inspections shall be
supplemented by official tests on leaves.
Where methods of micro-propagation are used, compliance
with point (a) of paragraph 1 shall be established by officialtesting, or testing under official supervision, of the mother plant.
Where methods of clonal selection are used, compliance
with point (a) of paragraph 1 shall be established by officialtesting, or testing under official supervision, of the clonal s tock.
Minimum conditions to be satisfied by basic and
certified seed potatoes
1. In the case of basic seed potatoes, the number of
growing plants not breeding true to the variety and the number of
plants of a different variety shall, together, not exceed 0.1% and
in the direct progeny, shall, together, not exceed 0.25%.
2. In the case of certified seed potatoes, the number of
plants not breeding true to the variety and the number of plant s
of a different variety, shall, together, not exceed 0.5% and in the
direct progeny, shall, together, not exceed 0.5%.
3. Seed potatoes shall comply with the following
requirements concerning the presence of regulated non-quarantine pests (RNQPs), or diseases caused by RNQPs, and
the respective categories, as set out in tables 1.12 and 1.13
below:RNQPs or sympt oms caused by 
RNQPsThreshold for the presence of 
RNQPs on the direct progeny of 
pre-basic seed potatoes
12
Symptoms of virus infection 0.5%B 2163
Table 1.12:
Table 1.13: 
4. The maximum number of generations of basic
seed potatoes shall be four, and the combined generations
of pre-basic seed potatoes i n the field and basic seed
potatoes shall be seven.
The maximum number of generations of certified
seed potatoes shall be two.
If the generation is not indicated on the official label,
the seed potatoes concerned shall be considered asbelonging to the maximum generation that is permitted
within the respective category.";
(d) item 2 thereof, the words under "Vegetables" shall be
substituted by the following: RNQPs or symptoms 
caused by RNQPsThreshold in the 
growing plants for basic 
seed potatoesThreshold in the 
growing plants for 
certified seed potatoes
123
Blackleg ( Dickeya  
Samson et al. spp. 
[1DICKG]; Pectobacterium  Waldee 
emend. Hauben et al. spp. [1PECBG])1.0% 4.0%
Candidatus Liberibacter
solanacearum Liefting et al. [LIBEPS]0% 0%
Candidatus Phytoplasma 
solani  Quaglino et al. 
[PHYPSO]0% 0%
Mosaic symptoms caused by viruses and symptoms caused by Potato leaf roll virus [PLRV00]0.8% 6.0%
Potato spindle tuber viroid [PSTVD0]0% 0%
RNQPs or symptoms 
caused by RNQPsThreshold in the direct 
progeny of basic seed 
potatoesThreshold in the direct 
progeny of certified 
seed potatoes
123
Symptoms of virus infection4.0% 10.0%
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Table 1.12:
Table 1.13: 
4. The maximum number of generations of basic
seed potatoes shall be four, and the combined generations
of pre-basic seed potatoes i n the field and basic seed
potatoes shall be seven.
The maximum number of generations of certified
seed potatoes shall be two.
If the generation is not indicated on the official label,
the seed potatoes concerned shall be considered asbelonging to the maximum generation that is permitted
within the respective category.";
(d) item 2 thereof, the words under "Vegetables" shall be
substituted by the following: RNQPs or symptoms 
caused by RNQPsThreshold in the 
growing plants for basic 
seed potatoesThreshold in the 
growing plants for 
certified seed potatoes
123
Blackleg ( Dickeya  
Samson et al. spp. 
[1DICKG]; Pectobacterium  Waldee 
emend. Hauben et al. spp. [1PECBG])1.0% 4.0%
Candidatus Liberibacter
solanacearum Liefting et al. [LIBEPS]0% 0%
Candidatus Phytoplasma 
solani  Quaglino et al. 
[PHYPSO]0% 0%
Mosaic symptoms caused by viruses and symptoms caused by Potato leaf roll virus [PLRV00]0.8% 6.0%
Potato spindle tuber viroid [PSTVD0]0% 0%
RNQPs or symptoms 
caused by RNQPsThreshold in the direct 
progeny of basic seed 
potatoesThreshold in the direct 
progeny of certified 
seed potatoes
123
Symptoms of virus infection4.0% 10.0%
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"Basic and certified seed
1. Varietal identity and varietal purity 
The crop shall possess adequate varietal identity and
varietal purity. 
2. Crop health 
The crop shall be practically free from any pests
which reduce the usefulness and quality of the propagation
material.
The crop shall also comply with the requirements
concerning Union quarantine pests, protected zonequarantine pests and regulated non-quarantine pests("RNQPs") provided for in implementing acts adopted
pursuant to Regulation (EU) 2016/2031, as well as with the
measures adopted pursuant to Article 30(1) of thatRegulation.
3. Previous cropping and contamination 
The crop may be grown only on land that has not
previously been cropped in a manner that might adversely
affect the nature or quality o f the seed to be produced. The
field shall be sufficiently free from such plants that are
volunteers from previous cropping.
4. Field and crop inspections 
In the case of basic seed, at least one official field
inspection shall be carried out. For certified seed, at least
one field inspection shall be carried out, officially
controlled by means of check inspection of at least 20% ofthe crop of each species. 
The cultural condition of the field and the stage of
development of the crop shall be such as to permit suitablechecks of varietal identity and purity and health status of
the crop. 
5. Isolated distances 
The minimum distances from neighbouring plants
which might result in undesirable foreign pollination shall
be the following:
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(a) Beta vulgaris
(i) From any pollen sources of the
genus Beta not included in sub-paragraphs (ii)
or (iii)
1000m
(ii) From pollen sources of varieties of
the same subspecies belonging to a different
group of varieties:
- crops to produce basic seed
1000m
- crops to produce certified seed
600m
(iii) From pollen sources of varieties of
the same subspecies belonging to the same
group of varieties:
- crops to produce basic seed
600m
- crops to produce certified seed
300m
The groups of varieties re ferred to in items (ii) and
(iii) shall be determined by the Directorate.
(b) Brassica species
(i) From sources of foreign pollen
liable to cause serious deterioration of varieties
of Brassica  species:
- crops to produce basic seed
1000m
- crops to produce certified seed
600m
(ii) From other sources of foreign pollen
liable to cross with varieties of Brassica
species:
- crops to produce basic seed
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500m
- crops to produce certified seed
300m
(c) Industrial chicory
(i) From other species of the same
genera or subspecies
1000m
(ii) From another variety of industrial
chicory:
- crops to produce basic seed 600m- crops to produce certified seed
300m
(d) Other species
(i) From sources of foreign pollen
liable to cause serious deterioration of varieties
of other species as a result of cross-fertilisation:
- crops to produce basic seed
500m
- crops to produce certified seed
300m
(ii) From other sources of foreign
pollen liable to cross with varieties of other
species as a result of cross-fertilisation:
- crops to produce basic seed
300m
- crops to produce certified seed
100m
With the approval of the Directorate, these distances
can be disregarded if there is adequate protection from anyundesirable, foreign pollination.".
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Amends 
Schedule III to 
the principal regulations. 4. Schedule III to the principal regulations shall be amended
as follows:
(a) item 1 Section I Part 2 "Seed health" thereof shall be
substituted by the following:
"(a) The seed shall be practically free from any pests
which reduce the usefulness and quality of the seed. 
The seed shall also comply with the requirements
concerning Union quarantine pests, protected zone
quarantine pests and RNQPs provided for in implementing
acts adopted pursuant to Regulation (EU) 2016/2031, as
well as the measures adopted pursuant to Article 30(1) ofthat Regulation.
(b) The presence of fungus bodies on the seeds and
the respective categories shall comply with the followingrequirements as set out in table 1.16 below:
Table 1.16:
";
(b) item 1 Section II Part 2 " Seed health" thereof shall be
substituted by the following: 
"(a) The seed shall be practically free from any pests
which reduce the usefulness and quality of the seed.CategoryMaximum number of fungus bodies,
such as sclerotia, or ergots, in asample of the weight specified incolumn 3 of Table 1.17 of Schedule IV
12
Cereals other than hybrids of Secale
cereale :
— Basic seed
— Certified seed
Hybrids of Secale cereale :
— Basic seed— Certified seed11
1
4(*)
(*) The presence of five fungus bodies such as sclerotia or fra gments of sclerotia,
or ergots in a sample of the pre scribed weight shall be deemed to be in conformity
with the standards, where a sec ond sample of the same weight co ntains no more
than four fungus bodies.
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The seed shall also comply with the requirements
concerning Union quarantine pests, protected zone
quarantine pests and RNQPs pr ovided for in implementing
acts adopted pursuant to Regulation (EU) 2016/2031, as
well as the measures adopted pursuant to Article 30(1) of
that Regulation.
(b) The presence of RNQPs on the seeds and the
respective categories shall comply with the followingrequirements as set out in table 1.18 below:
Table 1.18: 
";
(c) items " Pre-basic seed potatoes " and  "Basic and
certified seed " of Section III "Seed potatoes" thereof shall be
substituted by the following text respectively:
"Pre-basic seed potatoes
Minimum conditions for lots of pre-basic seed
potatoes
It has to be provided that lots of pre-basic seed
potatoes shall satisfy the following minimum conditions:
(a) presence of earth and extraneous matter shall
not exceed 1.0% by mass;
(b) the number of potatoes affected by rots, other
than ring rot or brown rot, shall not be present in a quantityexceeding 0.2% by mass;RNQPs or 
symptoms caused 
by RNQPsPlants for 
planting 
(genus or 
species)Thresholds 
for pre-
basic seedThresholds 
for basic 
seedThresholds 
for certified 
seed
1 2 345
Clavibacter 
michiganensis  ssp. 
insidiosus (McCulloch 1925) 
Davis et al. 
[CORBIN]Medicago 
sativa  L.0% 0% 0%
Ditylenchus dipsaci  
(Kuehn) Filipjev [DITYDI]Medicago 
sativa  L.0% 0% 0%
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(c) the number of potatoes with external blemishes,
including misshapen or damaged tubers, shall not exceed
3.0% by mass;
(d) the number of potatoes affected by common
scab over more than one third of their surface shall notexceed 5.0% by mass;
(e) shrivelled tubers due to excessive dehydration
or dehydration caused by silver scurf shall not exceed 0.5%by mass;
(f) lots of pre-basic seed potatoes shall comply
with the following requirements concerning the presence ofRNQPs, or diseases caused by the respective RNQPs as set
out in table 1.22 below:
Table 1.22: 
(g) the total number of potatoes, as referred to in
points (b) to (f), shall not exceed 6.0% by mass.
Basic and certified seed
Minimum quality conditions for lots of basic and
certified seed potatoes
The following tolerances for impurities, blemishes
and RNQPs, or symptoms cau sed by RNQPs, are allowed
for seed potatoes:
(1) presence of earth and extraneous matter: 1.0%RNQPs or symptoms 
caused by RNQPsThreshold for the presence of RNQPs 
on the lots of pre-basic seed potato
12
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%
VERŻJONI ELETTRONIKA
B 2170
B 2170
by mass for basic seed potatoes and 2.0% by mass for
certified seed potatoes;
(2) dry and wet rot combined, except if caused by
Synchytrium endobioticum , Clavibactermichiganensis  ssp.
sepedonicus  or Ralstonia solanacearum : 0.5% by mass, of
which wet rot 0.2% by mass;
(3) external blemishes, e.g. misshapen or damaged
tubers: 3.0% by mass;
(4) common scab affecting tubers over more than
one third of their surface: 5.0% by mass;
(5) shrivelled tubers due to excessive dehydration
or dehydration caused by silver scurf: 1.0% by mass;
(6) RNQPs, or symptoms caused by RNQPs, on
lots of seed potatoesas set out in table 1.23 below:
Table 1.23:
(7) total tolerance for items 2 to 6: 6.0% by mass for basic see d
potatoes, and 8.0% by mass for certified seed potatoes."; RNQPs or symptoms 
caused by RNQPsThreshold of the 
presence of the RNQPs 
on basic seed potatoes by 
massThreshold of the 
presence of the RNQPs 
on certified seed 
potatoes by mass
123
Candidatus Liberibacter
solanacearum  Liefting et 
al. 0% 0%
Ditylenchus destructor  
Thorne [DITYDE] 0% 0%
Black scurf affecting 
tubers over more than 10% of their surface as caused by Thanatephorus 
cucumeris (A.B. Frank) Donk [RHIZSO] 5.0% 5.0%
Powdery scab affecting tubers over more than 10% of their surface as 
caused by Spongospora 
subterranea (Wallr.) 
Lagerh. [SPONSU] 3.0% 3.0%
VERŻJONI ELETTRONIKA
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(d) item " Conditions for placing on the market of pre-
basic seed potatoes as "Union grades PBTC and PB"  of
Section III thereof shall be s ubstituted by the following new
item: 
"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:
(a) conditions concerning seed potatoes:
(i) plants not breeding true to the
variety, or plants of a different variety, shall not
be present in the crop;
(ii) plants, including tubers, are
produced through micro-propagation;
(iii) plants, including tubers, are
produced in a protected facility and in agrowing medium which is free from pests;
(iv) tubers shall not be multiplied
beyond the first generation;
(v) plants shall comply with the
following thresholds concerning the presence of
RNQPs, or symptoms caused by the respective
RNQP, as set out in tables 1.24and 1.25 below:
Table 1.24: 
RNQPs or symptoms caused by 
RNQPsThreshold for the presence of RNQPs 
on the growing plants for pre-basic 
seed potatoes of Union grade PBTC
12
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%
VERŻJONI ELETTRONIKA
B 2172
B 2172
Table 1.25:
(b) conditions concerning lots:
(i) they shall be free from seed potatoes
affected by rots;
(ii) they shall be free from seed potatoes
affected by common scab;
(iii) they shall be free from seed potatoes
excessively shrivelled due to dehydration;
(iv) they shall be free from seed potatoes
with external blemishes, including misshapen
or damaged tubers;
(v) lots of pre-basic seed potatoes shall
comply with the following thresholdsconcerning the presence of RNQPs, or
symptoms caused by the respective RNQPs asset out in table 1.26 below:
Table 1.26: Potato spindle tuber viroid [PSTVD0] 0%
RNQPs or symptoms caused by 
RNQPsThreshold for the presence of RNQPs 
on the direct progeny of pre-basic seed 
potatoes of Union grade PBTC
12
Symptoms of virus infection 0%
RNQPs or symptoms caused by 
RNQPsThreshold for the presence of RNQPs 
on the lots of pre-basic seed potatoes 
of Union grade PBTC by mass
12
Candidatus  Liberibacter solanacearum  
Liefting et al. [LIBEPS] 0%
Ditylenchus destructor  Thorne 
[DITYDE] 0%
Black scurf as caused by 
Thanatephoruscucumeris  (A.B. Frank) 
Donk [RHIZSO] 0%
Powdery scab as caused by Spongosporasubterranea  (Wallr.) 
Lagerh. [SPONSU] 0%
VERŻJONI ELETTRONIKA
B 2173
B 2173
(2) The conditions for pre-basic seed potatoes of
Union grade PB shall be as follows:
(a) conditions concerning seed potatoes:
(i) the number of plants not breeding
true to the variety and the number of plants of a
different variety together, shall not exceed0.01%;
(ii) plants shall comply with the
following thresholds concerning the presence of
RNQPs, or symptoms caused by the respective
RNQPs, as set out in tables 1.27 and 1.28below:
Table 1.27: 
Table 1.28: 
(b) tolerances applicable to lots, as regards
the following impurities, blemishes and diseases:
(i) seed potatoes affected by rots, other
than ring rot or brown rot, shall not exceedRNQPs or symptoms caused by 
RNQPsThreshold for the presence of RNQPs 
on the growing pla nts for pre-basic 
seed potatoes of  Union grade PB
12
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] 0.1%
Potato spindle tuber viroid [PSTVD0] 0%
RNQPs or symptoms caused by 
RNQPsThreshold for the presence of RNQPs 
on the direct progeny of pre-basic 
seed potatoes of Union grade PB
12
Symptoms of virus infection 0.5%
VERŻJONI ELETTRONIKA
B 2174
B 2174
0.2% by mass;
(ii) seed potatoes affected by common
scab over more than one third of their surface,
shall not exceed 5.0% by mass;
(iii) shrivelled tubers due to excessive
dehydration or dehydration caused by silverscurf, shall not exceed 0.5% by mass;
(iv) seed potatoes with external
blemishes, including misshapen or damaged
tubers, shall not exceed 3.0% by mass;
(v) the presence of earth and extraneous
matter shall not exceed 1.0% by mass;
(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 table 1.29 below:
Table 1.29: 
(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.";
(e) item 2 Part 2 "Seed health" thereof shall beRNQPs or symptoms caused by 
RNQPsThreshold for the presence of RNQPs 
on the lots of pre-ba sic seed potatoes 
of Union grade PB by mass
12
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%
VERŻJONI ELETTRONIKA
B 2175
B 2175
substituted by the following new items: 
"(a) The seed shall be practically free from any pests
which reduce the usefulness and quality of the seed.
The seed shall also comply with the
requirements concerning Union quarantine pests,
protected zone quarantine pests and RNQPs providedfor in implementing acts adopted pursuant to
Regulation (EU) 2016/2031, as well as with the
measures adopted pursuant to Article 30(1) of that
Regulation.
(b) The presence of regulated non-quarantine
pests (RNQPs) on vegetable seed shall, at least uponvisual inspection, not exceed the respective
thresholds set out in table 1.30 below:
Table 1.30: 
Bacteria
RNQPs or symptoms 
caused by RNQPsGenus or species of 
vegetable seedThreshold for the 
presence of RNQPs on 
the vegetable seed
123
Clavibacter 
michiganensis  ssp. 
michiganensis  (Smith) 
Davis et al. [CORBMI]Solanum lycopersicum  L.
0%
Xanthomonas axonopodis  
pv. phaseoli  (Smith) 
Vauterin et al. [XANTPH]Phaseolus vulgaris  L.
0%
Xanthomonas euvesicatoria Jones et al. 
[XANTEU]Capsicum annuum  L., 
Solanum lycopersicum  L.
0%
Xanthomonasfuscans  
subsp. fuscans  Schaad et 
al. [XANTFF]Phaseolus vulgaris  L.
0%
Xanthomonas gardneri  
(ex Šutič 1957) Jones et al 
[XANTGA]Capsicum annuum  L., 
Solanum lycopersicum  L.
0%
Xanthomonas perforans 
Jones et al. [XANTPF]Capsicum annuum  L., 
Solanum lycopersicum  L. 0%
Xanthomonas vesicatoria  
(ex Doidge) Vauterin et 
al. [XANTVE]Capsicum annuum  L., 
Solanum lycopersicum  L.
0%
VERŻJONI ELETTRONIKA
B 2176
B 2176
".Insects and mites
RNQPs or symptoms 
caused by RNQPsGenus or species of 
vegetable seedThreshold for the 
presence of RNQPs on 
the vegetable seed
123
Acanthoscelides obtectus  
(Say) [ACANOB]Phaseolus coccineus  L., 
Phaseolus vulgaris  L. 0%
Bruchus pisorum  
(Linnaeus) [BRCHPI]Pisum sativum  L.
0%
Bruchus rufimanus  
Boheman [BRCHRU]Vicia faba  L.
0%
Nematodes
RNQPs or symptoms 
caused by RNQPsGenus or species of 
vegetable seedThreshold for the 
presence of RNQPs on 
the vegetable seed
123
Ditylenchus dipsaci  
(Kuehn) Filipjev 
[DITYDI]Allium cepa  L., Allium 
porrum L.
0%
Viruses, viroids, virus-like  diseases and phytoplasmas
RNQPs or symptoms 
caused by RNQPsGenus or species of 
vegetable seedThreshold for the 
presence of RNQPs on 
the vegetable seed
122
Pepino mosaic virus 
[PEPMV0]Solanum lycopersicum  L.
0%
Potato spindle tuber 
viroid [PSTVD0]Capsicum annuum L., 
Solanum lycopersicum  L. 0%
_________________________________________________________________________________________________________________________
Ippubblikat mid-Dipartiment tal-Informazzjoni (doi.gov.mt) — Valletta — Published by the Department of Information (doi.gov.mt) — Valletta
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