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Kvalita a množství organické hmoty v půdách energetických rostlin
KOBLIC, Štěpán
The quality and quantity of organic matter are among the essential factors that significantly affect important soil properties. This work is focused on the research of the quality and quantity of organic matter in soils under energy crops - Szarvasi-I. and Dactylis glomerata. The literature search describes concepts that are important for understanding the topic. The practical part deals with regular soil sampling on experimental plots of JČU, and their subsequent treatment. The samples taken were analyzed in the laboratory according to the methodology of Kopecký et al. (2006), which is focused on determining the rate constant of oxidation of primary soil organic matter. Furthermore, the results were statistically evaluated in terms of the month of sampling, fertilization management and grass species. The results show that in terms of the month of soil sampling was the best primary soil organic matter in October 2019. According to the fertilizer management was the best in the variant "Control" and in terms of monitoring the grass species under Szarvasi-I. In terms of interaction of all monitored factors that the best influence on the quality of primary soil organic matter has unfertilized stands of Szarvasi-I
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Study of accumulation of cadmium ion by energy crops
Berkyová, Petra ; Soudek, Petr (advisor) ; Petrová, Šárka (referee)
Cadmium is heavy metal toxic for plants and animals and environmental contaminant which must be removed from natural environment. In recent years a new method phytoremediation is getting more attention. This method uses plants called hyperaccumulators for extraction of heavy metals from soils. Hyperaccumulators have, however, after accumulation of heavy metals no other use. Therefore new possibilities are discussed in last few years. Energy plants, in this thesis sorghum and malva, could be used for accumulation of heavy metals from soils and after that these plants could be used as energy source. This thesis wants to find out if sorgum and malva are able to grow in cadmium contaminated environment and if these plants will accumulate cadmium. It also compares different cultivars of sorghum in toxicity tests and compares ability of these cultivars to grow in cadmium contaminated environment and to accumulate this heavy metal. Further it focuses on affection of uptake of kadmium ions by sorhum in presence of glutathione or ethylenediaminetetraacetic acid.
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Utilization of endophytic microorganisms for growth promotion of Miscanthus
Mrnka, Libor ; Frantík, Tomáš ; Schmidt, Christoph Stephan ; Lovecká, P.
Increased survival and aboveground biomass yield of Miscanthus was achieved due to the inoculation of Miscanthus seedlings by a mixed inocula based on the selected endophytic microbes (bacteria and fungi). Inoculated treatments produced 20-90% higher yield of biomass compared to the controls. Importantly, fungal inoculum increased also production of rhizomes and the same trend was observed in the treatment inoculated by the bacterial mixture. Bacterial endophytes also strongly augmented overwintering of the plants on one of the tested model plantations. Because the price of the inocula production is economically feasible and does not substantially increase the plantation establishment costs we hope for fast implementation of the methodology both in CR and beyond.
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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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Environmental aspects of energy crops growing
KELBLEROVÁ, Veronika
In our conditions, is between renewable energy biomass a significant role, both waste and purposefully cultivated. Increasingly, the emphasis is on non-traditional plants (miscantus, hemp, but also as fodder sorrel). The aim of this work is to evaluate the usefulness of plants purposely grown for energy purposes in the Czech Republic and clarify the environmental impact of their cultivation. According to the literature and assess the suitability of cultivation for the purpose of energy recovery based on selected production capabilities and energy parameters.
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The comparison of selected plant cultures as different energy resources
PAVELOVÁ, Lenka
This bachelor thesis was made by form of literature retrieval, eventually added of any tables and graphic design of acquired data and own commentary (discussion) to the literature details. The aim of the work will assess the suitability of selected crops for cultivation in energy use with respekt to growing thein technology and assess the suitability of biomass for different wals of processing and energy recovery. A brief outline of the economic, ecological and economic importace of the topic. In the second chapter of literature review are provided information about renewable energy sources, what the renewable energy resources are, their significance and use. The chapter also discusses the importance and use of biomass as energy source, characteristic of various types of biomass and finally is mentioned the future of biomass. In the third chapter ?Selection and cultivation of plants for energy recovery? summarizes the information about selected woody and non-woody crops characteristic for energy use. It is these crops - grains, maize, fast growing woody plants, monocultures of grass, clover mixture, monoculture legumes, herbs, permanent grassland: the productive and out of productive importance. For individual crops are processed: general characteristics of plants, botanical classification, requirements for habitat, agricultural engineering, harvesting and post harvest treatment. Below are listed possibilities of production and outlined the use of crops for energy purposes. The fourth chapter deals with the ways of using biomass for energy purposes. By using wood, straw and energy crops for direct combustion of biomass to produce biogas and other forms of exploitation. Finally in the fifth chapter is a summary of key findings and recommendations resulting from studying issue, extended tables and graphical processing.
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