National Repository of Grey Literature 6 records found  Search took 0.00 seconds. 
Evaluation of permaculture gardening in the context of current knowledge applied in conventional and organic agriculture
Tkáčová, Anežka ; Soukup, Josef (advisor) ; Petrů, Martina (referee)
The aim of this bachelor thesis is to compare the conventional and the organic agricultural systems in various aspects. The emphasis is put on the economic, ecologic and social aspects. Subsequently the results are compared with the permaculture approach and its principles. The permaculture is a type of organic agriculture which is focused on the achievement of the sustainability in various human activities. In the end, the results are evaluated with regard to the usability and effectivity for aplication in the present conditions of the agriculture management. The permaculture is the most effective if applied in small scale units, like gardens or small farms. It is also beneficial for land and water management. It is not very suitable for systems with short-term changes because rather long time is neceséry for development of self-regulatory functions. However, some of its principles could be incorporated in a large scale agriculture as well, e.g. the protection of the biodiversity or usage of combination of crops with mutualistic interactions.
Methods of Tensile Force Measurements for Modern Soil Tillage Machines
Procházka, Petr ; Kumhála, František (advisor) ; Soukup, Josef (referee)
This Ph.D. thesis is focused on tensile forces measurement process of modern tillage machines for bigger working width. There is a limited amount of measuring devices for tensile forces higher than 100 kN.To eliminate tensile rod disadvantages (need of use of two tractors is complicated for measuring operation during the headlands turns) the new measuring frame was developed to measure the tensile forces. To characterize the physical attributes of the soil, before the new developed measurement, the samples of unbroken soil where taken (Kopecky cylinders. The penetration resistance of soil was measured in a horizontal and vertical profile by use of penetrometer.The measuring made on specific lands proven the new developed measuring device to be able to measure the tensile force up to 200 kN and more. The practical use of the measuring device was comparable to the measuring by a tensile rod during the measuring process.The considerable influence of the soil moisture was proven by the penetration measurements of the soil. The vertical and horizontal penetrometer measurements showed a similarity of the measuring method. The horizontal penetrometer might be a useful measuring method for a quick analysis of soil physical character considering accurate soil moisture measuring. Accurate instant soil moisture measuring and precise measurement of chisel plough working depth is a current theme for a future research.
Factors influencing seed germination, emergence and mortality in soil seed bank of Bromus sterilis L.
Žďárková, Veronika ; Soukup, Josef (advisor)
Bromus sterilis L. (barren brome) spreads rapidly in many European regions. In the Czech Republic, its importance has increased dramatically over the past 10 years. Barren brome is reported as a problem weed in winter crops such as winter wheat, winter barley and oil seed rape, in vineyards and in other cultivated places. Barren brome has been becoming troublesome weed of winter cereals mainly in reduced soil tillage systems. The factors, that are important for its spreading and adaptability under different environmental conditions, are dormancy and germination. Optimal timing for seed germination varies with respect to natural conditions and it is determining for plant development. These traits are adapted to different conditions and habitats; therefore the dormancy and germination response patterns to those conditions vary significantly. Recently there are not many information available on germination behaviour, therefore this study was focused on seeds of barren brome and its characteristics, which were collected in different regions of the Czech Republic. Seeds were investigated under different temperatures, light regimes and water stress in a wide range of conditions. The following characteristics of seeds were studied the dormancy, the dynamics of germination, the temperature optimum, the age of seeds and dynamics of emergence from different depths and persistence in the soil profile under field conditions. Dormancy and germination are influenced by external conditions. The dormancy of seeds barren brome is very short or missing. The germination is influenced by light; the seeds germinated better under darkness than under light regime. The primary dormancy of B. sterilis was short and the seeds needed only three weeks for after-ripening. The seeds of B. sterilis showed broad ecological valence to hydrothermal factors germinating in the wide range of 3 to 35 °C. The temperature optimum is 5-23°C. The germination was only slightly influenced in an environment with low water potential. Germination was limited under water stress only at lower temperatures under 10°C. The response to light at various temperatures showed that seeds germinated better in darkness in all temperatures regimes, than in alternating light regime, especially at lower temperatures. The emergence declined significantly with burial depth (under 40 mm). The seeds were not able to survive in the soil seed bank for a longer time and fall seeds lost viability after 1 year burial in soil profile. These results may be of value for development of predictive models and understanding period when weed control may be most feasible.
Analysis of water requirements of the field crops in areas with frequent occurrence of drought.
Zábranský, Petr ; Soukup, Josef (advisor) ; Jan, Jan (referee)
Summary Water resources are an important part of ecosystems. In the water balance of the landscape, the variability of climate, soil factors, as well as high diversity of vegetation play an important role. Evapotranspiration represents a major passive component in the water balance of the basin. Unlike forests, where the water balance is particularly predictable due to the long-term development of the stands, regular crop rotation in agricultural systems and agricultural practices may cause rapid changes in water balance during much shorter time. It may sometimes result in irreversible changes in ecosystems with impact on landscape biodiversity. An understanding of the limiting environmental factors and exact determination of the water demands of plants makepossible not only an improvement of yield parameters, but it is also condition for understanding of the agroecosystems sustainability in the cultural landscape. Field measurements of actual evapotranspiration were carried out in the period 2007 to 2015 in Velvary (Budihostice) in the Central Bohemia region, 210 m above sea level in the rain shadow area around Slaný territory. In terms of the average annual water balance (CHMI, 2014), the locality is regarded as the area with the difference between the average annual precipitation and annual potential evapotranspiration totals in amount of -200 mm, so the potential evapotranspiration slightly exceeds precipitation. Field measurements were conducted on commonly managed areas with a minimum size of the experimental plots of 1 ha. The measurements confirmed differences between the crop water demands during the growing season. Different values of the actual evapotranspiration as well as the Bowen ratio values were estimated for the observed crops depending on the growth stage of crops. The lowest values of actual evapotranspiration were detected for Zea mays and Sorghum bicolor. Higher water demands were shown by Triticum aestivum and Hordeum vulgare. On the contrary, the highest values of actual evapotranspiration were found in stands of Beta vulgaris and Medicago sativa. According to the values obtained for crop coefficients (Kc), the crops of Z. mays, S. bicolor and T. aestivum had about a quarter lower values of Kc compared with M. sativa and B. vulgaris crops in the main growing season. In this work, the daily values of Kc, which are the basic characteristics of moisture requirements for individual crop were determined and can be used modelling of hydrological processes in agro-phytocoenoses. The evaluation of moisture requirement of crops by the water flow in plants (determined by the sap flow method) showed the expected differences between S. bicolor and Z. mays plants. Water use efficiency (WUE) was significantly higher in plants of C4 type (Z. mays and S. bicolor) compared with the rest of observed plants of C3 type (T. aestivum and H. vulgare).
Natural compounds in foods with anti-cancer effects
Soukup, Josef ; Orsák, Matyáš (advisor) ; Hnilička, František (referee)
In this thesis, I focus on natural substances which are present in commonly available foods and their effects can not only considerably prevent, but also help treat cancer. As this is a very extensive topic, included are only substances which have been studied for this purpose for a long time and which have a large potential in this area. These are phenolic compounds, carotenoids, sulfur compounds, substances found in cruciferous vegetables or green tea, beta-glucans and their sources, and other health beneficial foods such as turmeric, ginger or garlic. I also mention several vitamins (C, E, A, D) which directly show anti-cancer effects or are used in combination with other means to increase the efficiency of the treatment. The deficiency of some other essential vitamins and minerals increase the risk of certain types of cancer as well and a large amount of anti-cancer acting compounds can be also found in herbs, exotic mushrooms, marine organisms and microorganisms, but that area exceeds the content of this thesis. Although nowdays there are substances targeted at only one symptom and can have a certain effect, these medicaments are associated with many side effects and are also expensive. The contemporary paradigm for cancer treatment is either combine several single-targeted medicaments or come up with medicaments that modulate multiple targets. Various types of cancer have similar character, but due to a different etiology of each type and different effect of individual anti-cancer substances (even belonging in the same chemical group), the efficiancy of these compounds against various types of cancer, mostly depending on metabolism, distribution in organism and the target use, differs significantly. Therefore, some substances can show a very strong anti-cancer effect at certain cancer types, while almost none at different types. Other factors such as biological availability or stability make utilization of many compounds more difficult. Basic types of anti-cancer effects are: antioxidant effects (the ability to scavenge free radicals), antiproliferative effects (the inhibition of uncontrolled growth), the ability to induce apoptosis (induction of programmed cell death), the ability to inhibit metastasis and anti-angiogenic effects (prevention of the formation of new blood vessels of the tumor).
Fynancial analysis Povltavské dairy Sedlčany
Štípková, Aneta ; Boukal, Petr (advisor) ; Soukup, Josef (referee)
The goal of my work is based on dates from the company to assess its development and status of financial terms. The results of my work is focused on the use of management. To achieve my goals I have applied methods of financial analysis. I focused on the profitability indicator reffering to the corporate effort.I also focused on EVA meaningful indicator of economic value added sharehlders of the company.The contribution of my work lies in understanding the problems of the dairy industry.

See also: similar author names
11 SOUKUP, Jiří
1 Soukup, J.
3 Soukup, Jakub
11 Soukup, Jan
2 Soukup, Jan,
2 Soukup, Jaromír
3 Soukup, Jaroslav
3 Soukup, Jindřich
11 Soukup, Jiří
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