Assessment of soil quality after biochar application based on enzymatic activity and microbial composition
Monika Mierzwa-Hersztek , Krzysztof Gondek , Agnieszka Klimkowicz-Pawlas , Maria Jolanta Chmiel , Krzysztof Dziedzic , Taras Hutsol
AbstractSoil microorganisms play a key role in many biochemical processes essential for the environment and for the ecological and production functions of soils, hence they are very important quality indicators. The study aimed at evaluating the effect of 1 and 2% additions of wheat and miscanthus straw biochars on soil enzymatic activity (dehydrogenases, urease, phosphatases) and the number of microorganisms (bacteria, fungi, actinobacteria). Pot experiments were carried out on soil with a loamy sand texture. The geometric mean of enzyme activities, biological index of fertility, and the integrated total enzyme activity index were used to explore the relationships between soil enzyme activities and the microbiological and chemical properties of soil. The addition of 1% miscanthus straw biochar had the most beneficial effect on the number of bacteria and fungi (increase by 380 and 26%, respectively), and 1% wheat straw biochar on the number of actinomycetes (increase by 273%). The correlation analysis between the number of actinomycetes and the chemical parameters of the soil showed the significant effect of the content of Ntotal (r = 0.76) and Ctotal (r = 0.85). The values of biological index of fertility, total enzyme activity index and geometric mean of enzyme activities indexes showed that the best quality of soil was produced by a 2% addition of wheat straw biochar.
|Journal series||International Agrophysics, ISSN 0236-8722, e-ISSN 2300-8725, (N/A 70 pkt)|
|Publication size in sheets||0.5|
|Keywords in English||biochar, soil, enzymatic activity, microorganisms, soil quality indexes|
|ASJC Classification||; ; ;|
|License||Journal (articles only); author's original; ; after publication|
|Publication indicators||= 0; : 2018 = 0.891; : 2018 = 1.227 (2) - 2018=1.548 (5)|
|Citation count*||1 (2020-03-28)|
|Finansowanie||This work was carried out under the project named “Research on forming a model of biochar changes in soil based on the quantitative and qualitative parameters of humus” financed by the National Science Centre (project No.: 2015/17/N/NZ9/01132).|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.