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The influence of biochar on physico-chemical properties of soil
Polášková, Nikola ; Sedláček, Petr (referee) ; Smilek, Jiří (advisor)
This thesis is focused on assessment of the influence of biochar on the soil physico-chemical properties (particle density, dry density, porosity, water retention capacity and maximum water holding capacity, oxidizable carbon content, total nitrogen content, phosphorus, potassium and magnesium content). The selected and examined soil types were: cambisol, fluvisol, chernozem and regosol. There were two types of biochar used for analysis – NovoTerra and Sonnenerde. Soil samples were dried to constant weight and adjusted to grain-size fraction under 2 mm, respectively 0,25 mm. The oxidizable carbon content was measured by oxidation using a mixture of potassium dichromate and sulphuric acid (Walkley-Black method), the total nitrogen content was measured by kjeldahlization and P, K and Mg content was measured using Mehlich 3 extraction and ICP-OES spectrometer. The results show that biochar has a significant influence on soil characteristics depending on the type of biochar and soil we use for biochar application. This thesis can be used to clarify the complex issues in terms of soil in Czech Republic or it can be used by farmers considering using biochar as a soil additive with the intention to increase productivity and fertility of soil.
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Aberační změny u fluvizemí vlivem intenzivního způsobu hospodaření
Fleková, Šárka
Diploma thesis „Aberration of fluvisol as affected by intensive agriculture management“ aims at the determination of selected soil properties, which can help us to assess the aberration changes. These can be positive or negative depending on agro-technical measures. Gleyic Fluvisol Clayic is under long-term monoculture of spring barely and under Norfolk crops rotation system. We followed soil reaction, buffering capacity, available nutrients content, and soil organic matter content and quality. Data set was evaluated by one-way ANOVA analysis and t-test (P=0,05). Negative aberration was confirmed in exchangeable soil reaction and soil organic carbon content. Positive aberration was found out in total nitrogen content, C/N ratio, and available nutrients. Effect of soil tillage and crops residues managements was not statistically significant.
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The influence of biochar on physico-chemical properties of soil
Polášková, Nikola ; Sedláček, Petr (referee) ; Smilek, Jiří (advisor)
This thesis is focused on assessment of the influence of biochar on the soil physico-chemical properties (particle density, dry density, porosity, water retention capacity and maximum water holding capacity, oxidizable carbon content, total nitrogen content, phosphorus, potassium and magnesium content). The selected and examined soil types were: cambisol, fluvisol, chernozem and regosol. There were two types of biochar used for analysis – NovoTerra and Sonnenerde. Soil samples were dried to constant weight and adjusted to grain-size fraction under 2 mm, respectively 0,25 mm. The oxidizable carbon content was measured by oxidation using a mixture of potassium dichromate and sulphuric acid (Walkley-Black method), the total nitrogen content was measured by kjeldahlization and P, K and Mg content was measured using Mehlich 3 extraction and ICP-OES spectrometer. The results show that biochar has a significant influence on soil characteristics depending on the type of biochar and soil we use for biochar application. This thesis can be used to clarify the complex issues in terms of soil in Czech Republic or it can be used by farmers considering using biochar as a soil additive with the intention to increase productivity and fertility of soil.
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Charakteristika vybraných chemických parametrů u různých typů půd
Badalová, Denisa
Bachelor thesis is aimed at evaluation of selected chemical indicators of soil quality. Standard analytical methods for determination of basic soil properties were used. Studied soil types were selected in natural ecosystems and as arable land. Cambisols, Calcaric Leptosol, and Fluvisols shown statistically significant differences according to different types of land use. We came to the conclusion, that Cambisols (arable soil) has higher humus content to compare with Cambisol under grassland. On the other hand Fluvisols and Calcaric Leptosol contained more humus in the natural ecosystems (permanent grassland and forest). In this case accumulation potential of organic carbon was higher to compare with arable land.
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