engleski

Evaluation of vermicomposted waste from green public area

Vermicompost (lumbripost, biohumus) is an organic fertilizer produced by biodegradation of various organic substances, most commonly manure, using the digestive system of Eisenia foetida. Vermicomposting can be more environmentally friendly and cost-effective than conventional methods for waste disposal because organic waste by decomposition turns into a useful product. In this study was presented the evaluation of fertilization value and ecological suitability of vermicompost produced from residues of maintenance of green public area. The low conductivity of the vermicompost were determined as a very favorable property, but the vermicompost characteristics that indicate that the maturation process was not completed were slightly increased C/N ratio and NH4-N/NO3-N ratio (0.4) and respiration intensity (3.4 mg CO2/g/day). These values indicate that vermicompost has not reached the highest stability class and that the nitrification has not been completed. Nevertheless, the estimated fertilization value of vermicompost is moderate to high, with a moderate concentration of N and P. However, the environmental suitability of vermicompost is very high because the determined concentrations of heavy metals and toxic elements are very low, significantly lower than the maximum allowed concentrations, and vermicompost can be used without limitation as an organic fertilizer, as a component for substrate production, but also as a substrate for seedlings growth.

fertilization value ; heavy metals ; environmental suitability ; substrate

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