Consequences of minimum soil tillage on abiotic soil properties and composition of microbial communities in a shallow Cambisol originated from fluvioglacial deposits

摘要: A long-term field experiment was run for 12 years to evaluate the impact of minimum tillage (MT) compared conventional mouldboard ploughing (CT) on soil chemical, physical and microbial properties in a shallow Cambisol formed over fluvioglacial deposits Drava river Slovenia. Significant differences between MT CT were found vertical distribution organic C (SOC) nutrients (total N plant available potassium); under MT, concentrations decreased from surface lower layers, as opposed which maintained rather uniform down depth. comparison with also increased proportion water-stable 2–4-mm-sized aggregates (80.9 61.3 %, respectively), water holding capacity (24.8 22.2 %, respectively) (13.4 10.3 %, upper 0–10-cm layer. Bulk density, porosity, 1–2-mm-sized infiltration rate showed no significant treatments. SOC content layer not significantly different (1.60 ± 0.07 1.45 ± 0.05 %, well overall stock investigated profile (0–60 cm) remained unaffected (57.4 ± 0.8 59.1 ± 2.2 t ha−1, respectively). Microbial biomass, estimated by total DNA, higher than Furthermore, positive linear dependence biomass observed. Fingerprinting bacterial, fungal archaeal communities indicated that community composition changed whereas changes diversity detected any domain. The most pronounced shifts bacterial 10–20-cm layer, while slightly 0–10 cm soil. affected or Our results indicate generates modest structure retention could support measures against erosion, drought nutrient leaching. Considering topsoil diversity, impacts microbiome are evident need be further identify functional traits.