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The effect of composts from potato pulp and municipal sewage sludge for changes of microelements in the soil during incubation

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Krzywy-Gawrońska E., Rozmarynowska M.
Polish Journal of Chemical Technology
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2007
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vol. 9
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issue 4
102-106
EN
The total and soluble content of microelements in the soil was described in the laboratory experiment. The soil was incubated with three doses of composts with a participation of municipal sewage sludge and potato pulp. The obtained results of the experiment pointed that all the composts increased an average total content and the forms soluble in 1 M HCl of microelements in the soil in comparison with the control. In the majority of the variants, the composts made with the 70% participation of municipal sewage sludge and 30% addition of straw or sawdust caused an increase of the content of the analyzed elements in the soil than the composts with the 70% participation of potato pulp and 30% addition of straw or sawdust. The differences are connected with a higher content of microelements, which were put in the soil, with the composts with the 70% participation of municipal sewage sludge and 30% addition of straw or sawdust. There are no differences in the formation of the content of microelements in the soil, which were depended on the type of the structural - formative component during the production of composts. The quantity of the composts' dose had an influence on the formation of the participation of the soluble form of microelements in the total content in the soil. The participation of the soluble form of cadmium, cooper, manganese and nickel in the total content in the soil increased along with increasing the dose of composts. The content of the total forms in the soil incubated with the composts included in the standard for the light soils.
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