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Závislost obsahu vybraných kovů na množství a kvalitě organické hmoty v půdě
Janovský, Jakub
The aim of the experiment was to assess the dependence of selected metals (Fe, Cu, Zn, Mn, Ni and Pb) for the quantity of organic matter and its quality on arable land. Soil sampling was conducted in Starý Hrozenkov and Žítková, located in the White Carpathians. Soil samples were collected during the growing season of 2012, on a monthly basis (April to October) from a depth of 0-30 cm. To determine the content of available metals by AAS, soil samples were extracted with 2M HNO3. Determination of the amounts of soil organic matter was performed by an oxidometric method (Cox), for determining the monitored fractions of soil organic matter (humic substances, humic and fulvic acids) was used the method of short fractionation. The results of analyzes of soil samples revealed that the supply of all monitored metals was in Žítková lower than in Starý Hrozenkov. Like the metal was also the quantity of each fractions of soil organic matter at the site Žítková lower than in the soil Starý Hrozenkov. In both localities were found a positive correlation between Cox and almost all the monitored elements. In soil in Žítková was found medium strong dependence metals (r = 0.4339 to 0.6675) on the content of humic substances in soil and medium dependence Zn, Cu and Fe on fulvic acids. In the Starý Hrozenkov was medium dependence Pb, Ni and Mn on humic acids and medium strong dependence Fe on fulvic acids (r = 0.4459).
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Kvalita humusu půd vybrané části Českomoravské vrchoviny
Pinteš, Lukáš
This bachelor thesis is focused on humus quality. They were samples taken from a chosen part of Českomoravská vrchovina, specifically from the Velkomeziříčský bioregion (16 locations). The samples were taken from Nové Město na Moravě and also northerly of the motorway D1 between Jihalva and Velké Meziříčí. The quality of humus was determined by the method Kononová-Bělčikova, which is based on fractionation of two, for humus typical substances, humic and fulvic acid. The thesis briefly introduces the soils as a whole and the causes of its origin. Furthermore, the work is focused on the organic fraction and its origin, meaning, composition and quality determination of humus. There are also characteristics of the area of interest, accompanied with some maps, processing soils samples, its evaluation and comparison of results with the neighbouring locations and literature.
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