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The effects of biochar on soil respiration in rhizosphere and non-rhizosphere soil

TitleThe effects of biochar on soil respiration in rhizosphere and non-rhizosphere soil
Publication TypeWeb Article
Year of Publication2014
AuthorsURBANKOVA, OLGA, ELBL JAKUB, and ZAHORA JAROSLAV
Series TitleMendel Net
Abstract

This paper presents the result from laboratory experiment (under controlled conditions), which is focused to influence of the burned plant biomass (biochar) to soil respiration in rhizosphere and soil without roots. The twelve Mitscherlich’s containers were used and were filled with subsoil and topsoil from the area of BÅ™ezová nad Svitavou. The experiment was divided into three variants: C presented the control variants without addition of biochar, V2 presented variants with 20 t of biocharper ha and V5 presented addition of 50 t of biochar per ha. It was used to nylon membrane for separating rhizosphere soil and non-rhizosphere soil. Soil respiration was determined by the soda-lime method, when CO2 is captured on the granules of soda-lime during anaerobic incubation. The results confirm the hypothesis that addition of biochar has positive effect on soil microbial activity and biomass production. The highest influence of biochar to soil respiration was measured in variant V5, the highest influence of biochar to biomass production was measured in variant V2.

URLhttp://mnet.mendelu.cz/mendelnet2014/articles/52_urbankova_1077.pdf