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Table 2 Stable aggregate fraction of the soil, carbon stocks and microbial biomass

From: A long-term field experiment demonstrates the influence of tillage on the bacterial potential to produce soil structure-stabilizing agents such as exopolysaccharides and lipopolysaccharides

Tillage Conventional Reduced
Depth 0–10 cm 10–20 cm 20–50 cm 0–10 cm 10–20 cm 20–50 cm
SAF (%)* 56.19 ± 8.98 48.58 ± 3.05 65.21 ± 9.62 50.35 ± 8.30 51.52 ± 6.73 69.02 ± 2.26
SOC (%)# 2.30 ± 0.41 2.15 ± 0.33 1.25 ± 0.37 2.92 ± 0.28 2.31 ± 0.26 1.23 ± 0.22
DOC (mg kg− 1)# 62.44 ± 9.79 53.61 ± 15.84 58.41 ± 10.23 99.49 ± 19.84 62.32 ± 7.62 51.97 ± 8.45
Cmic (mg kg−1)# 981.81 ± 158.92 849.18 ± 106.23 352.12 ± 121.46 1306.73 ± 122.07 932.26 ± 67.23 374.75 ± 58.22
  1. SAF Stable aggregate fraction, SOC Soil organic carbon, DOC Dissolved organic carbon, and Cmic microbial biomass carbon values of soils under two tillage systems, sampled at three different depths. Average values and standard deviations (±) are calculated based on triplicates (n = 3). Detected influence (p < 0.05) is symbolized for depth (*) or interaction of tillage and depth (#), respectively