engleski

Utjecaj dodatka komposta i biougljena na enzimatsku aktivnost crvenice i rendzine

Soil enzymes have an important role in maintaining soil ecology, physical and chemical properties and fertility. Sources of soil enzymes are the native soil microbiome, the plant itself, and other life forms present in the soil. The dehydrogenase activity is specific to living microorganisms and reflects microbial biomass at sampling and it plays an important role in oxidation of organic substances. The role of phosphatases is to release phosphorous linked to organic substances and reflect phosphorous cycling. The goal of this study was to compare enzymatic activity of terra rossa and rendzina soils supplemented with compost or biochar produced from olive pomace or sludge waste. Two rates of compost and biochar were added to soils. Dehydrogenase, acid phosphatase (ACP) and alkaline phosphatase (ALP) were measured at the time of mixing of the soil with substrates and 30 days after growing Chinese cabbage. The obtained results indicate that dehydrogenase, ACP and ALP activity are significantly influenced by the method of waste processing, i.e. whether the waste was composted or converted to biochar as well as the rate of added compost or biochar. The source of compost or biochar had no influence on the activity of the enzymes. The dehydrogenase and ALP activity significantly differed between soil types, while ACP and ALP activity was significantly different between sampling points.

biougljen, crvenica, enzimatska aktivnost tla, kompost, rendzina

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