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National Repository of Grey Literature 3 records found  Search took 0.01 seconds. 
Porovnání utužení půdy na zemědělském pozemku v závislosti na použité technologii jejího zpracování
 MACH, Václav
The diploma thesis deals with the issue of soil degradation by compaction and with the influence of different method of cultivation on pedocompaction. It describes the problem of soil compaction, origin of this degradation, its impacts and whether it is possible to prevent the compaction or eliminate it afterwards. It also deals with description of measuring device which is able to find out the figures of penetrometric resistance of soil and its moistness. The thesis also closely describes individual work operations that have been done on the land. The tillage is analysed in detail because it is the system of cultivation that can highly influence the compaction. The most commonly used systems of soil cultivation are mentioned with their advantages and disadvantages. The experiment in the diploma thesis deals with the influence of soil compaction using different technology in its process. The field experiment took place on a trial field that was divided into two parts in terms of tillage. The first part was used for ploughing within three years and on the other ploughing was replaced by loosening. After collecting necessary data their evaluation took place. The figures of penetrometric resistance and soil moisture are summarized in tables and plotted in graphs for better interpretation.
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Vliv používání nákladního automobilu v zemědělství na půdní prostředí
 Novák, Milan
The aim of the diploma thesis is to determine the influence of using a agri-tractor in agriculture and its impact on the environment of sandy loam soil. The influence on the pedocompact is compared when using different mechanization under operating conditi-ons. A tractor with semi-trailer and TATRA agri-tractor with semi-trailer were used for that purpose. The main point of the work is a field-laboratory experiment, on the basis of which the influence of transitions of individual ensembles on the soil is evaluated. The experi-ment was carried out in 2015 on the land farm cultivate by Agrodružstvo Blížkovice. Key indicators of soil compaction were appraised during the experiment. Within the literary research soil itself is characterized in general, as well as the issues of soil compaction and various types of transport in agriculture. The experimental part includes the methodology used, the material researched together with the measurement results and further discussion on the topic. Transport operations represent more than 50 % of the total agricultural output volu-me. Along with the intensification of agriculture and simultaneous magnification of ag-ricultural technology the problem of excessive soil compaction had begun to deepen. The soil compaction negatively affects the physical and chemical caharcteristics of soil and reduces its fertility. Agricultural equipment manufacturers have been trying to develop new mechani-zation technologies to minimize soil compaction. Considering soil compaction, the use of a tractor with semi-trailer has appeared as more suitable. Appropriate solution seems to be using special central tire inflation system or in contrast different ways of their underinflation.
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Vplyv rôznych spôsobov zakladania porastov poľných plodín a spracovania pôdy na zhutnenie pôdy
 Fusek, Andrej
The thesis aims to analyze an impact of soil processing on its compaction and penetration resistance. The measurement was carried out in April 2018 on the gley fluvisols at the experimental station in Žabčice. Three methods of soil tillage were compared in a 7-field crop rotation. Resistance of the soil, as well as soil moisture, were measured at the same time. The course of the penetration resistance of each variant of the experiment is described. The differences between individual variants were found by using statistical and graphical evaluation. In some variants, harmful compaction has been reported.
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