Soil Enzyme Activity Response under the Amendment of Different Types of Biochar

Biochar (BC) is a material that finds many applications in agriculture and environmental activities. The aim of the study was to define influence biochar produced from various organic materials: mellow compost (MC), stabilized municipal sewage sludge (MSS), pine sawdust (PS), sycamore (SS) oak leaves (OL) on soil enzyme activity, as well its relations with carbon nitrogen content. After 60-day incubation BC, activity dehydrogenases (DEH), catalase (CAT), alkaline (AlP) acid (AcP) phosphatases investigated. basic parameters were also determined: TOC, TN, DOM, pH H2O, available phosphorus (AP). highest AP content obtained S + MSS, OL MC variants. Enzyme MSS regardless time. 60 days, enzymes inhibited. results indicate response enzymatic depends feedstock When using BC an exogenous matter, it necessary determine TOC/TN ratio. For very wide range this parameter, supplemental fertilization or mixtures different biochars should be applied.