This thesis examined the effects of applied stabilized nitrogenous fertilizers with sulphur (ENSIN and ENTEC 26) and nitrogenous fertilizers without inhibitors (DASA) in the nutrition of winter wheat. The effect of various forms of stabilized nitrogenous fertilizers on the yield and qualitative parameters of winter wheat was studied during a three-year vegetative experiment. The experiment was carried out in the form of a small plot experiment in two localities (Žabčice near Brna and Vatín near Žďáru nad Sázavou). The experiment included the following six variants of fertilisation: 1. unfertilised control, 2. DASA + DASA (ammonium nitrate and ammonium sulphate) , 3. ENSIN, 4. ENTEC 26, 5. LAD (ammonium nitrate with dolomite) + ENSIN, 6. LAD + ENTEC 26. On all fertilized variants there was a significant increase in yeald compared to the unfertilized control (an average of 22.4 to 37.3 %). The highest average yield for three years amounted variant LAD + ENSIN in the locality Vatín and Žabčice. The maximum average yield 7,39 t/ha reached the option LAD + ENSIN in the locality Vatín and 7,61 t/ha in the locality Žabčice. This variant also achieved the highest content of N - substances and sedimentation value. Only in bulk density was better option LAD + ENTEC 26, however, there was no significant difference. Variant LAD + ENSIN was effective also in terms of economic efficiency.

Thesis on topic of the possibilities of automation components for combine harvesters. It deals with the issue of direct production of cereals using combine harvesters, fitted with automation components. The first part of the thesis contains a definition of the combine harvester with all the agrotechnical requirements. The combine harvesters are further distributed by some specific criteria like the threshing and the separation system. Further on are mentioned and described the combine harvesters automation systems supplied to the world market. In the practical part of the thesis is a detail explanation of the method used for the performed laboratory field measurement, the process and the followed processing and evaluation of the results. One selected combine harvester was used for observation and testing of the grain losses depending on the forward ground speed and a different setting of the working mechanisms using some automation components from the onboard cockpit computer of the combine harvester. In the conclusion of the thesis all the results were mentioned and the effect of combine harvester setting on the grain losses was evaluated.

The aim of this thesis was to elaborate analysis of cultivation of cereal crops and spring barley in the Czech Republic, EU and worldwide, and to evaluate the impact of different methods of tillage on yields and economics of cultivation of spring barley. The effect of different soil tillage intensity on yields and economics of cultivation of spring barley was observed in the long -- term experiment. This experiment was conducted on loamy chernozem soil in sugar-beet producing region in Ivanovice na Hané. Yields obtained between years 1990 -- 2014 were evaluated. Spring barley was grown in three crop rotations. The forecrop of the spring barley was always sugar beet grown after maize for silage, winter wheat and spring barley. Four variants of tillage were evaluated: ploughing to the depth of 0,22 m, ploughing to the depth of 0,15 m, straight sowing into non-tilled soil and shallow loosening soil to the depth of 0,10 m. In all three crop rotations, the highest average yield was obtained in variant - ploughing to the depth of 0,15 m and the lowest average yield was obtained in variant - ploughing to the depth of 0,22 m. For the economic evaluation of the impact of different soil tillage intensities were determined variable costs, revenues and gross margins. In all three crop rotations the lowest gross margins were achieved in variant with ploughing to the depth of 0,22 m. In the crop rotation of maize for silage -- sugar beet -- spring barley and in the crop rotation of spring barley -- sugar beet -- spring barley were the highest gross margins determined in variant with direct sowing into non-tilled soil. In the crop station of winter wheat -- sugar beet -- spring barley were the highest gross margins determined in variant shallow loosening soil to the depth of 0,10 m. The results indicate that in these soil and climatic conditions, the reduction of intensity of tillage for spring barley grown after sugar beet is sustainable alternative to the traditional method of tillage.

The diploma thesis deals with the determination of vitamin E in grains of wheat kernels with unusual coloring. In the theoretical part is mentioned botanical characterization of wheat, barley and tritordeum, vitamin E and its chemical and biological aspects and basics of chromatography with a focus on the high performance liquid chromatography (HPLC). The analysis to quanify vitamin E was performed in the experimental part of the thesis. The analysis was conducted with samples of winter and spring wheat, spring barley and spring tritordeum from harvests of 2014 and 2015. These were varieties with unusual coloring of the grain. The evaluation was conducted by variety (winter wheat, spring wheat, spring barely, spring tritordeum) and by the color of the kernels (blue aleuron, purple pericarp, yellow pericarp). Subsection part of the thesis is dedicated to a quantification of vitamin E during long-term storage. Based on the determination of total vitamin E amount in all analyzed varieties of cereal grains with a different color is not statistically significant difference in the values of the total amount of vitamin E. The difference between the content of vitamin E in the samples of the same varieties of different cereals harvest from a year 2014 and a year 2015 were not statistically significant. All varieties of wheat were quantified four vitamers: alpha-tocopherol, beta-tocopherol, alpha-tocotrienol and beta-tocotrienol. The amount of other vitamers was below the limit of detection. The total content of vitamin E and contents of individual vitamers coincide with the data given in the literature for wheat varieties with standard color of grain. Spring barley contained a slightly higher average levels of total vitamin E amount in comparison with varieties of spring and winter wheat. The total average amount of vitamin E in varieties of spring tritordeum was also slightly higher than in varieties of winter and spring wheat. From the long term storage point of view, it is clear that the total amount of vitamin E in both varieties is relatively stable and shows no clear trend in function of storage time.

In the literary part of the thesis are information about the possibilities of influencing the quality of grain barely with foliar fertilizers and elicitors. In the practical part we explored the effect off ertilizer of company AGRA GROUP a.s. on quality of barley. The results of small-plot field trials established on plots of the Agrospol agricultural enterprise in 2014 and 2015 in Velká Bystřic we can see the positive effect of applied foliar fertilizers on the yield of the grain of spring barley variety Bojos. Also we can see positive effect on the quality of the grain, specially on the mechanical properties. Preparation NanoFyt Si had the positive effect on the yield, increase the proportion of leading grain and contributed to higher starch content. Foliar fertilizer K-Gel supported the use of fertilizers UREAstabil + AmisaN, which led to higher yields and better grain quality. Preparation nitrophenol increased yield and starch content of the grain.

Objective of the theses was to determine the botanical origin of bee-collected pollens using pollen analysis. The beehive, from where the pollen came from, is located in Hlavatce, which is 20 km far from České Budějovice. Bee-collected polens was obtained via pollen trap, which was put on the beehive once a week for 24 hours between 17th March to 6th June 2017. Pollens were dried, sorted according to the color shades, and the partial color samples were weighed on the analytical scales. The pollen analysis took place at a microscope magnification of 400x. The characteristics of exine (sculpture) and quantity and type of apertures were observed. The size of the grain, which was measured always in 50 pollen grains, helped to classify the plant species. Using the Shannon-Wiener Diversity Index, the bee's preferences were assessed in individual samples. The work is supplemented with photos of selected pollen grains.

The aim of this diploma thesis was to find out the influence of basic phosphorus fertilization at different soil acidity levels on its sampling of malting barley plants (Sunshine variety) during vegetation, grain yield and quality and the content of labile forms of phosphorus in the soil. The problem was solved in the form of a precise vessel experiment in the vegetation hall of the biotechnological pavilion M in the premises of Mendel University in Brno. The fertilizers Amofos, Superphosphate and Fertilizers Duofertil TOP 38 NP and Eurofertil TOP 35 NP were included in the experiment. The fertilizer was applied before sowing at a dose of 39 kg P2O5.ha-1, calculated on the vessel size. At all tested levels of acidity the soil showed basic phosphorus fertilization by increasing its take-off by the plant in phase 3 of the right leaf, except neutral soil and in the phase of formation of 4th tiller. At the stage of jointing (3rd node), the phosphorus consumption of plants significantly increased on variants fertilized by Eurofertil TOP 35 NP and Duofertil TOP 38 NP. The reported increase in phosphorus yield was the result of a statistically significant increase in the weight of the plants fertilized with these fertilizers. Phosphorus fertilization increased the water-soluble P content in the soil determined at the first sampling in the range of 13,5 - 32%. From the results of the experiment, the Duofertil TOP 38 NP fertilizer is recommended for its higher efficiency in the use of phosphorus, especially on acidic and alkaline soils. The basic fertilized phosphorus did not have a significant effect on the yield of barley grains on acidic and alkaline soil. The increase in yield was statistically conclusive only on the land of neutral fertilized Amofos. On grain qualitative parameters (NL and starch content) grown under acidic and neutral soils, phosphorus fertilization did not statistically prove conclusively. Only in alkaline soils there was a statistically significant increase in phosphorus content in the grain on Amofos and Superphosphate fertilized variants.

Title: Sputtering of dust grains and its consequences for space processes Author: Marek Vyšinka Department: Department of Surface and Plasma Science Supervisor: prof. RNDr. Jana Šafránková, DrSc., Department of Surface and Plasma Science Abstract: A great part of matter in a space has a form of dust grains, tiny pieces of rocks with the dimensions of hundreds nanometers to hundreds micrometers. In this environment dust grains undergo collisions with energetic particles (electron, ions, UV photons) that leads to their charging and modification. The presented thesis studies ion-dust interactions and is focussed on dust grain modification through ion implantation and its destruction via sputtering process. Two compu- ter models are presented - first for computing the ion implantation profile in the grain and second, for the shape of the sputtered grain lying on the surface of a bigger object. The resulting shape of the grain is compared with that obtained experimentally. Important results of the thesis are measured sputtering yields for spherical SiO2 grains at several surface potentials obtained by simultaneous ion and electron bombardments. Keywords: ions, dust grains, sputtering, sputtering yield, implantation profile 1

Objective of the work was to identify with using pollen analysis botanical origin of bee-colected pollens collected from beehive station Lískovec near the town Volary in the Protected Landscape Area of Šumava. Bee-collected pollens were collected once a week from one honey bee colony with using of a pollen trap. The time of collection was summer and late summer period from 22 June to 11 September 2010. Bee-collected pollens were dried, categorized by color, weighed and observed using the microscope. Pollen grains were determined by the number and type of apertures, shape, sculpture and size. Size of pollen grains was measured on at least 50 pollen grains of one type. In each microscopic slide were counted at least 500 pollen grains. The proportion of plant species in the sample was expressed as a percentage and the importace of plant species was evaluated in the diet of honey bees in the area of interest. Selected samples of bee-collected pollens from beehive station Lískovec and also from beehive station Dobčice were investigated for protein content and amino acid composition. Pollen belonging to Polemonium coeruleum, Trifolium pratense and Trifolium repens was evaluated as an important source of protein and amino acids for honey bees. The concentration of essential amino acids expressed as percentages of total amount of amino acids did not differ significantly between samples of bee-collected pollen. Another objective of the work was to compare the results from the area of interest with the results processed in the similar study from beehive station Dobčice in the northern area of the landscape Blanský les. The work also includes statistical evaluation of dominance, frequency, Shannon-Wiener index of diversity and variability between samples and species. The work is complemented by photographs of selected pollen grains.

Objective of the work was to identify with using pollen analysis botanical origin of bee pollens. Pollen analysis consisted in the distribution of samples to individual sub-samples . Samples were weighed and a part of them was dissolved in a solution of glycerin and water. Dissolved samples were viewed under a microscope. Pollen was removed by the beekeeper Mgr .Milan Trhlín with using a device called pollen catcher. The samples were collected in the year 2011 in the spring and early summer period from beehive location on the hill Lískovec, of the protected landscape Šumava 1,8 km west of city Volary, at a time of 25. march to 24. june. Another objective of the work was with using phytocenology study, in the distance 1,5 km from the beehive habitat, evaluate the structure of plant association from the point of nutrition honeybees. The work also includes evaluation preference bees for individual plant species. There were detected, that bees prefer the plants that provide the best digest pollen and the plants which grows up to 1,5 km from beehive habitat. There were distinguised 32 types of pollen grains.