Canada Thistle (Cirsium arvense L.) is a perennial, deep-rooted, herbal weed from the family Asteraceae, reproducing generative and vegetative. It belongs to the very important weeds, it is ranked among the ten most noxious weeds of the world.
It became an extremely important weed especially for its ability to colonize arable land and high reproductive and competitive ability. The aim of this work is to create a comprehensive information on the biological attributes of Canada thistle, that
are important for its reproduction and survival at the site. Furthermore, to describe and analyze the effective ways of its management, which are currently used.
Literature review deals with biological characteristics of Canada thistle.
It describes the importance and harmfulness, morphology, reproduction
and dissemination of Canada thistle. Further it discloses the methods of direct
and indirect regulation.
In the research section dynamics of stems creation was described
and the regeneration ability of root fragments of various lengths of Canada thistle, placed in different soil depths was examined. The assumptions of the experiment was, that regeneration of Canada thistle can be influenced both the length of root fragments and the burial depth. Length of the root fragments significantly affected regeneration, it had an impact on all five observed characteristics: number of new plants (p<0.001), number of shoos (p=0.046), weight of aboveground (p=0.016)
and root (p<0.001) biomass and length of the newly formed root system (p<0.001).
The influence of the burial depth has significant effect on the number of plants (p=0.038), number of stems (p=0.001) and weight root biomass (p=0.045). One receptacle has created an average of 121.5 g of biomass. Most of the total biomass produced 8 cm long root fragments (160.1 g). Plants arising from the shortest fragments created 115.1 g total biomass.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:257723 |
| Date | January 2016 |
| Creators | Čítek, Jaroslav |
| Contributors | Hamouz, Pavel, Václav, Václav |
| Publisher | Česká zemědělská univerzita v Praze |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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