|
|
Návrh antikorozní ochrany u strojů pro aplikaci hnojiv v zemědělství
Mareček, Tomáš
The diploma thesis is focused on proposal corrison protection on machines for application of fertilizers in agriculture. The theoretical part describes the distribution of machines for fertilizer application, issue and species of corrosion. The next section discusses the electrochemical corrosion, its principles and distribution. The final section is an experiment that has analyzed the possibility of using five kinds of corrosion protection evaluation of corrosion tests in laboratory.
|
|
|
Humic substances as transport medium for plant nutrition
Vlková, Markéta ; Solná, Irena (referee) ; Klučáková, Martina (advisor)
This bachelor thesis treats about humic matters and their application in agriculture by means of hydrogels transport medium. It studies progressive releasing of substances, which could be used as more common nutrition for plants, prepared from superabsorbent polymers. Research was implemented in collaboration with industrial partners. The substances are synthetically made of sodium Lignohumate and mixture of industrial fertilizer called NPK. Released substances were characterized by using some methods. First, there were measured qualities, which didn’t specify released compounds, like swelling, conductivity, pH and absorption of hydrogels with different wavelengths. More details came with methods ICP-OES and ion chromatography. Hydrogels which contained both mixtures of matters written up, were studied in water solution for 5 weeks and every week all characterization were measured. From the results we can see that both of the mixtures decrease ability of hydrogel’s swelling, mainly NPK. Measuring of absorption showed that the most of the substances released from sodium Lignohumate were from hydrogels without NPK. By other measuring, we noticed realizing of potassium and phosphorus elements. The most of them were from hydrogels containing NPK. By measuring ion chromatography, we found chloride, phosphoric, sulfuric and nitric ions in solution.
|
|
|
The behavior of superabsorbent polymers in artificial soils
Männlová, Adriana ; Smilek, Jiří (referee) ; Kratochvílová, Romana (advisor)
This bachelor thesis deals with the study of superabsorbent polymers for environmental and agricultural applications. Generally thessis preparations are to perform the funciton of irrigation ,so that thanks to its unique properties , can absorb water in tha rainy season and keep it arend the root system as long as possible. Superabsorbent polymers can also perform the fiction of fertilizer carries and thus ensure its gradual release. These gel structures were subjected to testing of their swelling in environments with different ionic strenght. Subsequently, in the long term monitored thein ability to trap water in the soil environment model.
|
|
|
Využití biologických přípravků (řasy, houby, výtažky) při závlaze zeleniny
Kořínek, Jaroslav
Algae has been using in many industrial and agricultural branches since 2 700 B. C. Application of algae, its extracts and preparations containing various extracts -- plant, mycorrhiza fungus, etc. -- in agriculture and horticulture is becoming more and more popular in these days. Several studies proved its positive effect on growth of various plant species. Scientific researches proved its impact on soil quality, growth of roots, plant's growth rate, photosynthesis, plant's quality and yield. Recent studies showed that extracts from seaweed for plant protection prevents from many factors that cause biotic and abiotic stress and also open up a potential of using in terrain. Main reason why biologic preparations should be used in agricultural is salinity and contamination of soil caused by using mineral fertilizers and pesticides.
|
|
|
Vliv vybraných základních hnojiv na tvorbu kořenového systému okrasných dřevin
Krejčí, Jana
The aim of the thesis was to design an experiment to test the plants Caryopteris cladonensis ,Worcester Gold'. On the basis of this experiment should be carried out assessment of the basic types of fertilizers and their effect on the root system of experimental plants. The Experiment was carried out on 800 pieces of experimental plants, which were divided into four variants, and each variant consisted of four repetitions, so that was captured and the possible influence of the location of the plant. On the experimental plants were observed morphological parameters: the height of the plants, the number of shoots, number of sheets, the volume root, root collar diameter and Visual evaluation of the experimental plant. Evaluation of the results of the experiment on the root system of trees shows that between the versions there is a big difference and at the same time 62 you can assess that all the variants are very suitable for container growing method of experimental plants.
|
|
|
Vinohradnické faktory ovlivňující obsah dusíkatých látek v hroznech
Šafaříková, Hana
In my work I focus on the vineyard factors that affect the content of nitrogen compounds in grapes . The first part deals with the importance of nitrogen in the vine nutrition and its resources , as well as nitrogen fertilization . Symptoms of excess or deficiency, the method of fertilization and kinds of nitrogen fertilizers. The second part is devoted to nitrogen substances in grapes, must and wine and assimilable nitrogen. The final part focuses on planting the vineyard and its species and plants that are able to accumulate nitrogen.
|
|
|
The apply digestate at operate of biogas plant agricultural type
ČÁPOVÁ, Aneta
Comparing inputs needed to operate biogas stations, this Bachelor paper focuses on the composition of digestate and on its use in five examined stations. The paper is split into two sections: theoretical and practical. The theoretical section, i.e. a summary of relevant literature, explains the basic concepts and other issues related to the biogas proper, biogas generating stations, substrates and digestates. The practical section deals with experimental data obtained from the five stations. The data were acquired through a questionnaire wherein the stations' operators described their facilities while specifying the parameters; substrates applied; methane yield figures; results of digestate analyses; and their methods of application.
|
|
| |
|
|
Denitrification in soils with different nutrient inputs
ŘÍHOVÁ, Gabriela
The aim of this thesis was to estimate denitrification activity in four agricultural soils which are managed differently regarding type and amount of fertilizers. Potential denitrification, soil respiration and denitrifying enzyme activity were determined in laboratory experiments. In additional experiment, the impact of changes in soil pH on denitrification characteristics was studied.
|
|
|
Using of digestate of agricultural biogas stations
VERNER, Dušan
This work deals with problems of agricultural biogas stations with the focus on using of final product of anaerobic fermentation, digestate, on agricultural soil. It evaluates its fertilizing effect in comparison to industrial fertilizers. The results showed that the fertilizing effect can improve economy of growing plants, however it depends on quality of digestate, constitution of base input material and technology of processing. It is not possible to use digestate anytime, it depends on growing crops and its technology. Nevertheless digestate as a final product of anaerobic fermentation is an interesting fertilizer.
|
guest ::
