Effects of fertilization with urban and agricultural organic wastes in a field trial - Waste imprint on soil microbial activity

► Field trial using fertilizers based on urban organic waste. ► Measurable effects on soil organic matter, basal respiration and soil microbial biomass. ► Sole carbon source utilization indicated a robust microbial community. ► Metal input below ecotoxicological limits even after accelerated fertilizer loading. ► No detrimental effects within the timeframe of the study.