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Eliminace obsahu kadmia v máku aplikací saturačních kalů
Šebestová, Andrea
The aim of the diploma thesis was to test the effect of the soil application of carbonation mud on the change of cadmium (Cd) content in soil and plants in the early stages of development. The experiment was based on a precise phytotron pot trial with a defined light, temperature and humidity regime. As the experimental plant, poppy (Papaver somniferum L., variety Major), was used. Silt brown soil was used for experimental vessels. The effect of carbonation mud was evaluated at the level of three variants of applied doses corresponding to 0, 5 and 10 t.ha-1. Cadmium [Cd (NO3)2] was applied in three variants: 1, 5 and 10 mg.kg-1 of soil. The parameters (soil pH, Cd content in the soil, plant weight, Cd content in the plant, Cd plant uptake) were analyzed in three terms during the experiment. From the results of the analyzes it was found that the control soil variant (6.78) and the cadmium variant without carbonation mud (6.87 - 6.88) showed the lowest soil pH. The highest soil pH was observed in variants with the highest doses of applied carbonation mud (7.64 - 7.66). With increasing doses of applied carbonation mud, the available cadmium content in the soil decreased significantly. A positive relationship of higher doses of carbonation mud and dry weight of plants was demonstrated. Plants with the highest dose of carbonation mud achieved the highest average weight. However, this effect was not proven statistically until the last sampling. Also, the content of cadmium in plants, as well as the plants cadmium uptake, was dependent on the doses of carbonation mud. The highest effect on the elimination of cadmium uptake by the plant was found in variants with the highest doses of carbonation mud.
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