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Ověření účinku některých herbicidních přípravků na druhové spektrum plevelů v obilninách
VLČEK, Ladislav
Today weeds belong to very significant harmful agents in the protection of field crops. The occurrence is influenced by a number of factors (method of cultivation, soil cultivation, soil-climatic conditions, nutrient content and application of herbicides, etc.) The aim of this bachelor thesis is to broaden the knowledge about the biology, occurrence and harmfulness of weed species in cultivated cereals and to verify the effect of some herbicidal preparations after an application to weeds. An evaluation of the species spectrum of weeds occurring at the monitored sites in winter wheat was performed in a small-plot experiment.
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Metody a možnosti regulace plevelů v jarních obilninách
DVOŘÁK, Jan
The thesis focused on description and characteristics of spring wheat and barley and their life cycles. Thesis deals with the issue of very dangerous weed plants and deals with the possibilities of their regulation by using herbicidal preparations in the growth spring cereals. Weeds are problematic plants that negatively affect the quality of production and also the economy of cultivation. Part of the thesis is the evaluation of a small plot experiment, which was performed in the crop of the spring barley on the land of the company AGRO Dolní Bukovsko in the cadastral area of the village Sedlíkovice in the direction (of Veselí nad Lužnicí) and in the spring wheat on the land of the above mentioned company in the cadastral territory of the municipality of Radonice in year 2017. Results of weed frequency and economic evaluation of the experiment are presented in tables and graphs.
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Integrated weed management in cereals
Smutný, V. ; Winkler, J. ; Klem, Karel
Certified methodology summarized knowledge about the impact of different non-direct (preventive) agronomic measures (crop rotations, soil tillage, fertilization using organic fertilizers and straw management) on weeds (weed seedbank and actual weed infestation), from qualitative (weed specie composition) and quantitative (intensity occurrence) point of view). There is also particular focus on rationalization of chemical methods of weed management (herbicide application). Principles of decision-making rules based on establishment of economic thresholds, optimal timing of application and optimization of herbicide doses. There is a potential for decrease of applied herbicides in cereals using of this approach, which brings not only considerable economic savings, but also reduction of negative environmental effect caused by herbicide use.\n\n
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Problem of Philosophy in Arabic Medieval Thinking
Šenk Kopecká, Pavlína ; Hogenová, Anna (advisor) ; Semrádová, Ilona (referee) ; Kalábová, Helena (referee)
Medieval philosophy in the Arabic world has sought to harmonize the Greek philosophic tradition with the Islamic religion. Many rulers, scholars and theologians were against this intellectual approach and defend the Islam from the philosophers. The position of philosophy and its followers in the Arabic realm was therefore uneasy. Many scholars had to hide their opinions between the lines and avoid to doing philosophy publicly. Alongside the unfriendly environment, the position of philosophy in the Arabic society was also determined by common notion of scholars, that the revealing of the philosophical thoughts can be harmful for uneducated citizen, as well as influenced by mysticism. The aim of this thesis is to summarize the main philosophical approaches responding to the problematic position of philosophy in the Arabic world. Crucial will be the philosophy of solitary by Ibn Bajja, where the author seeks to bond tight the philosopher's life with the city and thus present a new role of philosopher in the Arabic society. Keywords Ibn Bajja, Rule of the Solitary, Al-Farabi, Political Regime, Aristotle, Nicomachean Ethics, Plato, The Republic, political philosophy, mysticism, ethics, philosopher, virtue, city, weeds, knowledge, governance, happiness
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Způsoby regulace plevelů v porostech pěstované řepky (Brassica spp.)
TUPÁ, Jiřina
The thesis describes characteristics of rapeseed and its life cycle. Its main objective is to approach the problematics of weeds in the spring formo of rapeseed on the lands of agricultural company AGRO Dolní Bukovsko. Small-plot experiment was founded on cadastral area Bzí near Dolní Bukovsko, in direction to Týn nad Vltavou. The problems in cultivation of cultural plants are caused by weeds, which are negatively affecting the quality of production as well as the economics of cultivation. Evaluation of weeds was carried out by the counting method in the period since March to August 2016. Number of the weed plants which were found on the particular location was regularly registered and evaluated. In the conclustion it is possible to state that long-term regulation of weed occurence has to be undertaken in time, thoroughly and has to be based on complete protection. Complete protection consists of direct and indirect methods of regulation. As one of the many but most effective possibilities it is possible to use herbicide preparations
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The influence of animal fertilisation and application of ferment on plant species composition of permanent grasslands
LHOTSKÝ, Jan
The presented thesis is focused on the drohové representation of grasses, herbs and weeds on permanent grassland fertilized animál fertilizers and digest with biogas stations. The work is based on intensive observation period from 1. 11. 2014 30. 10. 2015. In the following pages you can read on the use of forage crops in agriculture, about the importance of energy, about the importance of grassland in the landscape, ecology and tourism ventures. Furthermore, the work deals with the care of permanent grass, their formation, choice of suitable forage species in these locations and the choice of species by the use of sward. No small part is gocused on Biogass station, on source substrátes and digest output and its use. The main part of the resolves and deals with the correct handling of the fertilizer, their descriptions, and the importance of the species. There is also a reference concerning the legislation and when it is possible use of the fertilizer, which can be applied, regulas conservation etc. This section describes the results of my monitor three different fertilized grass stands permanently in similar or the same climatic conditions. We can find here describes the variation in account growth, composition, density, yield, guality and fitness for a particular purpose. Unfortunately, there is also a negative effect of weather on described vegetation in the summer of 2015, when we hit the tropical temperatures and drought. For this reason, my observations of very different from other studies, especially in the summer and Autumn period.
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Wheat competiveness against weeds in organic farming
MACHKOVÁ, Božena
This study is concentrated on the evaluation of competitive ability of spring and winter wheat varieties by selected characteristics affecting competitiveness against weeds. They evaluated the characteristics (shape tuft, the length of the plant, LAI, coverage and the position of the flag leaf). For the evaluation of characters (tuft shape, length and position of flag leaf) methodology was used, based on the methodical approach ÚKZÚZ for tests of its utility varieties. For the analysis was used LAI (SunScan Devices - Canopy Analysis Sytem).
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Vliv pěstování energetických rostlin na biodiverzitu
DVOŘÁK, Jan
The thesis is focused on the cultivation of energy crop in the Czech Republic and their potential use as renewable energy sources. It describes energy plants grown for the production of liquid fuel, biogas or direct combustion. Furthermore, there is an emphasis on environmental aspects of cultivating these plants. Especially erosion risks of the land on which energy crops are grown, is also evaluated. There is described the species diversity in crops focusing on weeds and ground beetles as bioindicators environment. Part of this work is elaboration a questionnaire with subjects that deal with the cultivation of energy plants. In the questionnaire, there is observed total area and the percentage of types of energy and other cultivated plants. The subjects were also asked about new kinds of energy crops, and whether they planned their growing in the near future.
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Seeds germination at selected weed species
VAŇKOVÁ, Jana
Bachelor thesis is focused on basic informations and familiarization with problems of weeds and their general properties. Purpose of thesis is to determine the germination of selected weed species: Common dandelion (Taraxacum officinale L.) Thlaspi arvense (Thlaspi arvense L.), Coltsfoot Medical (Tussilago farfara L.), Bedstraw (Galium aparine L.), Broad leaved dock (Rumex obtusifolius L.). The result is to compare the effect of different temperature and light conditions for seed germination.
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