preservation of rare weed species in poland · variant 6.3. seed production at the request of gene...
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Preservation of rare weed
species in Poland
Denise F. Dostatny
National Centre for Plant Genetic Resources
Plant Breeding and Acclimatization Institute
05-870 Błonie Warszawa – Poland
e-mail: [email protected]
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Agriculture
• Polish agriculture is characterized by considerable
fragmentation of farms and relative low consumption
of industrial means of production.
• More than a half of the area of Poland is arable
land of which almost 80% is cultivated (Central
Statistical Office). Therefore, we may assume how
important maintenance of diversity is in the case of
arable land.
• Some steps have already been taken in Poland to
preserve the still existing segetal flora.
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Pińczów Nidziańska Basin
Owczary
Lubuski Klub
Przyrodników
Conservation of arable plants - projects
Opole
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Research area
• The implementation of the „Niecka Nidziańska – a
model refuge of agro-biodiversity” in the South of
Poland.
• The research was carried out in the South of Poland.
This area of Poland has traditionally been used for
farming (extensive farmming). The research was
conducted on limestone soil, as this soil type is
characteristic of the unique weed species of the
community Caucalido-Scandicertum, threatened by
extinction both in Poland and Europe.
• Phytosociological records were conducted using the
Braun-Blanquet method during the vegetation
seasons of 1997-1999 and 2005-2007 (2008-2012),
across an area of 100 m2.
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Correlation between number of weed
species and coverage of cultivated plants
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Correlation between number of weed
species and coverage of weed species
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Some species
like Apera spica-
venti increased
its area of
occurrence and
made use of free
niches
abandoned by
tiny, more
sensitive weed
species.
Such species have also become expansive by forming
biotypes that are resistant to herbicides. For this
reason some patches are marked by a low number of
weeds species with the low coverage of cultivated
plant.
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Factors that influence extinction of weeds:
Changes in farming methods
Heavy agriculture
equipment
Methods of purifying the
seeding material
Abandoning of cultivation in
too steep and too dry fields Excessive use
of chemicals
Abandoning of correct
crop rotation
New crop plant varieties
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Several weed species, whose seeds were
acquired on site, have been re-introduced to
maintain the weed gene pool. The assumption is
to obtain the most diversified mosaic of arable
land.
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Picnic - Exhibition of organic products
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I Międzynarodowej Konferencji
"CONSERVING ARABLE
WEED DIVERSITY- the role of
weeds as an ecological
resource and indicators of agro-
ecosystem function"
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• It is known that diaspores of different species may
exist in resting state in the soil seed bank, but they do
not germinate due to adverse external conditions.
Most probably, ecological agriculture, which is
currently being implemented in the area, contributes to
restoration of weed species that are very rare or even
considered extinct. When analyzing the results of
current research a conclusion may be drawn that after
a few years of not using herbicides, balance in the
field is regained, different weed species compete with
one another, not only with the crop plant.
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• This research will further aim at creating „agro-reserves” in Poland
• Maintenance of possibly full segetal flora and the whole spectrum of the communities
• The reserves serve as didactic paths: tourist, pupils, students
• The protection actions to be taken in situ and ex-situ: reserves, collections, botanical gardens, gene banks and in the fields.
• Is necessary a co-operation of many institutions representing different sectors of economy
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The next step
• The National Strategy of Conservation and
Moderate Use of Biological Diversity (2003)
emphasizes that also „pests and weeds” should be
preserved. The strategy has been prepared upon
request of the Polish Ministry of Environment and
draw up in accordance with the „Convention on
Biological Diversity”. Therefore, the National agri-
environmental Programme in Poland has included
the „Sixth Package (second stage: 2007 – 2013) in
its plan.
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List of available agri-environmental
packages (2007 – 2013)
• Package 1. Sustainable farming
• Package 2. Organic farming
• Package 3: Extensive permanent grassland;
• Package 4. Protection of endangered bird species and natural
habitats outside of Natura 2000 areas
• Package 5. Protection of endangered bird species and natural
habitats in Natura 2000 areas
• Package 6. Preservation of endangered genetic plant
resources in agriculture
• Package 7. Preservation of endangered animal genetic
resources in agriculture
• Package 8. Protection of soil and water
• Package 9. Buffer zones
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Variant 6.3. Seed production at the
request of gene bank
Implementation of the variant will concern propagation
and maintenance of:
• local crop varieties, landraces
• endangered crop species;
• endangered species of plants that accompany them
in their natural habitats, in order to preserve their
original properties. The sub-option 6.3c provides for
preservation of rare flora accompanying cultivations.
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Requirements of Variant 6.3.:
• Contract with gene bank for seed propagation
(farmer provides seed to the gene bank free of
charge)
• Minimum total area for crops contracted by a gene
bank is 0.1 ha and a maximum area is 0.3 ha;
• The farmer needs to keep crop documentation and
make it available to employee of gene bank
supervising the crop;
• Amount of agri-environmental payment 4,700
PLN/ha (1,204 EUR/ha)
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Complications • It is necessary to monitor the status of population of the
endangered weed species in collections, agricultural
reserves, and on site which consists in establishing a
network of trial areas in all these locations and
repeating a series of standardised measurements based
on the description of the habitat condition as well as
performing a standard phytosociological record.
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• Polish agro-environmental programme for the years
2014-2020 probably will be different.
• Buffer zones - which contributes considerably to
preservation of the biodiversity of agrocenoses and
genetic resources of plants occurring in agricultural
ecosystems:
• field boundaries and edges, with trees, shrubs,
melliferous plants
• area of 25m x min. 50m: crop plant with segetal plants
• Despite the dynamic development of ecological farming
across the country, in some regions these possibilities
are not fully used by farmers and agricultural and
environmental consultants seem not be interested in the
subject.
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Consolida regalis S.F. Gray
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Lathyrus tuberosus L.
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Melampyrum arvense L.
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Agrostemma githago L.
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Ranunculus arvensis L.
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Stachys annua L.
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Fumaria officinalis L.
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Lithospermum arvense L.
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Melandrium noctiflorum (L.) Fr.
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Neslia paniculata (L.) Desv.
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Centaurea cyanus L.
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Conclusions
• In order to preserve rare weed species we must maintain
the traditional way of using fields, where extensive
farming is carried out including crop rotation, planting old
varieties and species of crop plants, without any use of
chemical pesticides or cleaning seed material.
• The protection of rare weed species in situ constitutes a
huge challenge for us, although it is well worth of effort,
because the preservation of these species in the form of
living, functioning populations constitutes preservation of
a part of nature and culture of Poland.
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Thank you