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Kvalita nezhumifikované půdní organické hmoty v půdách porostu rostliny Miscanthus × giganteus
 SKOBA, David
The diploma thesis is focused on observing the yield parameters of the plant Miscanthus × giganteus and on monitoring and comparing the content of soil organic matter under this stand in two variants (Cut, Uncut) and the adjacent fallow (control variant - Fallow variant). The experiments took place at the experimental site of the Faculty of Agriculture of the University of South Bohemia in České Budějovice, where the growth of this plant was established several years ago and experiments are carried out every year aimed at observing the yield of this plant. Field work consisted of taking phytomass and monitoring the yields of the monitored plant. Furthermore, soil samples were taken from individual management variants for subsequent analysis. The quantity and quality of soil organic matter was monitored in the laboratory. The yield of dry matter in the Uncut variant exceeded 20 t ? ha-1. Furthermore, it was found that the date of soil sampling had an effect on the amount of organic matter in the soil. In the summer months (July and August 2019) a higher content of carbon of primary soil organic matter, carbon of stable fractions of soil organic matter and total organic carbon was recorded. The carbon content of stable organic fractions is influenced by different management. While the highest was in the Fallow variant, the lowest content was in the Cut variant, the difference between the two variants was statistically significant. The content of total organic carbon was the highest in August 2019, when it reached 3.1%.
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Kvalifikace primární půdní organické hmoty podle rychlostní konstanty oxidace v půdách porostů energetických rostlin
 SKOBA, David
This Bachelor thesis is focused on monitoring the yield parameters of selected energy plants (Elymus elonganus, Phalaris arundinacea L., Miscanthus × giganteus). First part of the work was performed at the experimental site of the Faculty of Agriculture of the University of South Bohemia in České Budějovice, where long-term experiments were carried out to look at the yields of these plants. I was observing the yield of crops grown for the purpose of incineration, which are harvested once a year before the beginning of the growing season. Research has shown that on a 4-year average the most profitable species is Miscanthus × giganteus. The second practical part of my work was the sampling and analysis of soil samples from these stands and, for comparison, the sampling of soil under permanent grassland. In the laboratory at the Department of Agroecosystems the samples were modified and examined in terms of the quantity and quality of soil organic matter. The analysis shows that the content of humus in soils with energy plants is lower in comparison to the content of these substances in soil under permanent grassland. There were no significant differences in the observed values of the velocity constants of the oxidation of the primary soil organic matter.
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