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Druhové spektrum plevelů ve vybraných porostech okopanin a zelenin
Borková, Kristýna
In my thesis I was focused on the species spectrum of weeds in these crops – cabbage, pumpkins and potatoes. The observation was carried out in a company Zahradnictví Brabec located in Modřice, not far from Brno. I performed the evaluation on the basis of numerical method and statistics, using the ordination diagram to show the results. Most frequently in crops were Pigweed (Amaranthus retroflexus), Common lambsquarters (Chenopodium album) and Canada thistle (Cirsium arvense). These three weeds occured in all crops in large quantities. The most weeds were in pumpkin growthand the least weeds were in cabbage.
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Vliv stáří chmelnice na druhové složení plevelů
Suchánková, Marie
Bachelor thesis occupies with weed evaluation in selected hop plants. The literary part is focused on hop production in the Czech Republic, botanical and biological characteristics of hops. Both perennial, both in the elderly and in the younger, fytocenological relevé were prepared. The evaluation was conducted in three deadlines in April, June and August 2017. The values obtained were statistically evaluated by DCA and CCA analyzes.The observation took place at the agricultural cooperative in Kokora. Two weeds have been recorded as 26 weeds. In the older hopper there were Solanum nigrum, Tripleurospermum inodorum, Galinsoga parviflora, Elytrigia repens, Atriplex patula, Rumex obtusifolius, Lmium amplexicaule, Holosteum umbellatum. In the younger hopper there was mainly Persicaria lapathifolia.
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Druhové složení vegetace ve vinicích vybrané vinařské obce
Smolková, Barbora
The aim of the bachelor thesis was to evaluate the representation of plants in the vineyards, which are located on the vineyard lines of the vineyards Tabule and Čtvrtky in the small wine-growing village Svatobořice. The evaluation was carried out by 10 phytosociological pictures of each vineyard and the frequency occurrence of different plant species. A total of 36 plant species were found. The highest frequency of plants on the Čtvrtky vineyard was: Setaria pumila, Lolium perenne, Capsella bursa-pastoris, Festuca rubra, Amaranthus retroflexus, Stellaria media and Erodium cicutarium. The largest representation of plants on the vineyard Tabule was: Lolium perenne, Capsella bursa-pastoris, Festuca rubra, Amaranthus retroflexus, Convolvulus arvensis and Polygonum aviculare. The largest occurence of examined species was determined on the Čtvrtky vineyard, which comprised of: Lolium perenne, Amaranthus retroflexus and Stellaria media. The largest coverage on the vineyard line Čtvrtky was comprised of Festuca rubra, Capsella bursa-pastoris, Lolium perenne and Amaranthus retroflexus.
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Dlouhodobý vliv vybraných pěstitelských opatření na zaplevelení jarního ječmene
Skácel, Vladimír
The bachelor thesis deals with the influence of straw management in combination with soil cultivation and the influence of crop rotation on the weed infestation of spring barley. Weed infestation evaluation was carried out on the experimental plot in cadastral area of village Ivanovice na Hané. On the experimental parcels the number of weeds was evaluated per 1 m2. In comparison with variants of crop rotation, was founded a higher weed infestation in the variant of rotation between the variant of cultivation of spring barley and winter wheat. From the point of view of straw management in combination with soil cultivation, the highest weed infestation were in variants of straw burning and the rotation of cereal crop with phacelia tanacetifolia The most common weeds were Fallopia convolvulus, Chenopodium album, Veronica persica, Lamium amplexicaule and Veronica polita.
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Druhové spektrum plevelů ve vybraném zemědělském podniku
Reiter, Michal
The aim of this bachelor’s thesis was to analys the spectrum of species and the abundance of weed infestation on the fields of Agra Horní Dunajovice, Ltd., The analysis was made in two kinds of crops: winter wheat and winter rapeseed after various pre-crop. The counting method was used for evalution. In winter wheat was found 25 weed species. Lower number of weed species were identified in winter rapeseed and the number was 14. In both crops were most common kinds of weeds species the winter weed species. The most cammon arable weeds were Cammon field-speedwell (Veronica persica), Shepherd’s-purse (Capsella bursa-pastoris), Cleavers (Galium aparine), Flixweed (Descurainia sophia), Field pansy (Viola arvensis).
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Plevele v máku setém a možnosti jejich regulace
Olexa, Michal
ABSTRACT The aim of my final bachelor thesis on the basis of a literary overview, was to find out what are the most important types of weeds in vegetation of opium poppy and how to interfere them effectively. There are two type of options, a chemical (by using herbicides) or a mechanical. Mechanical regulation is not feasible either with normally intermedia distance because most of agronoms use chemical way to defence weeds in vegetation of opium poppy. Chemical treatment can be done premergently or post-emergence. Herbicides registered directly for use in poppy are not, because the poppy is not a very important crop. However, herbicides originally intended, for example, for use in maize have been identified. Important is when the app is used. It´s good to start with regulation of weeds when they start to growth. In the vegetation of opium poppy is a big space for a lot of species of weeds.
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Vyhodnocení zaplevelení polních plodin na vybraných pozemcích
Němec, Rostislav
The main objective of the thesis is to evaluate the weed infestation of selected field crops on the lands of the agricultural cooperative Klenovice na Hané. The monitoring was carried out from the end of summer 2016 until the beginning of autumn 2017. The selected crops were the most grown ones, barley (Hordeum vulgare), common wheat (Triticum aestivum), rapeseed (Brassica napus var. napus), maize (Zea mays) and sugar beet (Beta vulgaris subsp. vulgaris convar. vulgaris var. altissima). The investigation of weed infestation of field crops was carried out during fieldwork using numerical method and the delineation of 1 m2 with following processing using canonical correspondence analysis (CCA). Mostly were found these kinds of weeds Apera spica-venti, Atriplex patula, Brassica napus var. napus, Capsella bursa-pastoris, Cirsium arvense, Descurainia sophia, Elytrigia repens, Galium aparine, Chenopodium album and Tripleurospermum inodorum.
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Plevele ozimé pšenice a technologie pěstování
Liška, Jakub
The aim of this thesis was to evaluate the occurrence of weeds in the winter wheat field at the field experimental station in Žabcice, depending on the technology of cultivation and on the preceding crop being cultivated. Weed infestation was evaluated using a numerical method on an area of 1m2. As a variant of soil preparation, conventional, minimizing and direct sowing technologies were used. Preceding crops for winter wheat were alfalfa and maize for silage. The evaluation took place in the years 2017-2018. The statistical processing of the evaluation of the number of individuals of all species in the winter wheat field was performed using the Statistica.cz computer software. In order to determine the effect of the observed factors on the weed species which occurred in the field experiments, multivariate analysis of ecological data was performed by using the Detrended Correspondence Analysis (DCA). In addition, Redundancy Analysis (RDA) and Canonical Correspondence Analysis (CCA) were used. The results show that cultivation technology and preceding crops affect weed species spectrum.
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Vegetace plevelů vybraných druhů obilnin a olejnin
Kašparová, Pavlína
This bachelor thesis is focused on evaluation of weed infestation on selected land in the cadastral area of Vlčkov and Horní Sloupnice. Observation is concentrating on growth areas of winter wheat, spring barley, winter oilseed rape and soya bean. The results were processed by multidimensional analysis of ecological data. Twenty-seven different weeds were found on the observed land in total. The heighest number of infestation species were found in soya bean area and the least were found in spring barley area. The most frequent weed species were Veronica persica, Galium aparine, Stellaria media and Viola arvensis in winter wheat and in spring barley there were Viola arvensis, Veronica persica and Galium aparine. Among winter oilseed rape there was the biggest amount of Hordeum vulgare as engaged crop and between weeds there were Viola arvensis, Fumaria officinalis and Lamium purpureum. The most frequent weed were Fumaria officinalis, Avena fatua and Viola arvensis in soya bean species. The common species for all crops were Viola arvensis.
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Vyhodnocení zaplevelení dlouhodobé monokultury ozimé pšenice
Chalupová, Nikola
This bachelor thesis deals with the weed infestation of monocultures of winter wheat and cereals. In terms of each monoculture there is dealt with variations of the straw management. Subsequently the intensity of weed infestation and species name is compared within different variants of straw management. The research is run at the research station in Ivanovice na Hané in 2017. Data was collected using the numerical method. Final evaluation is processed in the MS Office and Canoco 5.0. The intensity of weed infestation was displayed by bar charts. The ordination diagram was used to present which kinds of weed can be found altogether and in what kind of the monoculture they appeared.
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