Univ., Diss.--Bonn, 2000.

Paderborn, Universiẗat, Diss., 2002.

Zugl.: Kassel, Univ., Diss., 2005 / Download lizenzpflichtig

Universiẗat, Diss., 2005--Kassel. / Download lizenzpflichtig.

The aim of this study was to determine and validate the impact of residual biomass compost to modify the physical and hydro-physical properties of a deficient soils. Set of experiments was carried out to achieve the following sub-objectives: - Monitoring the impact of compost on selected physical properties deficient soils. - Evaluation of the dynamics of change of density after incorporation of higher doses of compost. - Assess the impact of different doses of compost incorporation on infiltration, soil structure and penetrometer resistance at two different sites. - Monitoring the retention capacity of soils with different doses of compost applied. Experimental work was carried out in the form of small plot, nádobových a pilot experiments.

Oldenburg, Universiẗat, Diss., 2003. / Dateien in unterschiedlichen Formaten.

The aim of this project will be to determine the influence of conditions during composting and vermicomposting of biodegradable waste of organic matter on physical-chemical properties of compost and vermicompost extracts. From this point of view mainly the content of basic nutrients and humin substances will be monitored and also the possible content of risk elements. In the same purpose the presence of different types of microorganisms in these extracts will be investigated and the enzyme activity of microorganisms in their extracts will be also determined. The extracts will be simultaneously prepared under aerobic and unaerobic conditions in different portion among the organic matter and its leachate and each sample variants will be compared to above conditions. The real effect of extracts applied on grown plants or into a soil including the fungicide effect of sample extracts during pot experiments will be reported. The effect of extracts will be also compared with commercial bioeffectors.

The initial part summarizes current knowledge about impact of pesticides on microorganisms and their activity. It also deals with a description and effects of organic fertilization used in the experiment (compost and composted biochar). Based on the literature, we determined the hypothesis: Pesticides have negative effect on soil microbial activity, which was tested in the experimental part. In the experimental part, we carried out a pot experiment. We made two basic versions: a control soil without pesticides and a soil after the application of pesticides. We growed specimens of lettuce (Lactuca sativa) in pots. One version was without organic fertilization, next with amended compost and the last one with composted biochar. In total, we prepared six variants of pots, which were subjected to various measurements. We determined the production of aboveground and underground biomass and the root/shoot ratio. This measurement showed that the variants with pesticides are more suitable for plant growth, plants were bigger in both, aboveground and underground biomass, so they can probably uptake nutrients from soil degraded by pollutants, which can´t hold them back. We also monitored activity of microbial respiration by two methods: by measuring the absorbance of CO2 at soda lime and by the substrate induced respiration. The results showed a decrease in respiration of microorganisms in polluted soil in both of these measurements. Results of mineral nitrogen leaching suprisingly determined, that less nitrogen escaped in soil with pesticides in both forms, amonnia and nitrate, but its amount was generally very low. Cellulose test showed worse total breakdown of cellulose in contaminated variants. Phytotoxicity test revealed, that pesticides may have inhibiting effect on plant germination, but the active substances of pesticides can stimulate growth and development of plant sprouts.

Brandenburgische Techn. Universiẗat, Diss., 2003--Cottbus.

Master s thesis deals with a topic Evaluation of compost produced at the landfill Kuchyňky in the literary section deal composting and other methods of disposal of biodegradable waste. The practical part is described Zdounky composting plant, which is located at the closed part of the body waste dump in the municipality Kitchens. Following evaluation of compost samples collected in the months of April to September 2015. The experiment was carried out according to the modified standard DIN EN 13432 Appendix E, which deals with the determination of ecotoxicological effects on higher plants. The conclusion contains a discussion, which compares the results.