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Table 1 Analysis of selected physical–chemical properties of soils

From: Status of soil organic carbon and nitrogen stocks in Koga Watershed Area, Northwest Ethiopia

Soil properties Depth (cm) Land use
Irrigation farm Rainfed farm
Mean ± SD CV Mean + SD CV
SOC (%) 0–15 2.73 ± 0.15 0.055 2.67 ± 0.16 0.059
  15–30 2.34 ± 0.20 0.085 2.09 ± 0.18 0.086
BD (g cm−3) 0–15 1.06 ± 0.21 0.198 1.07 ± 0.16 0.149
  15–30 1.12 ± 0.08 0.071 1.19 ± 0.17 0.143
TN (%) 0–15 0.20 ± 0.04 0.200 0.18 ± 0.02 0.111
  15–30 0.17 ± 0.03 0.176 0.17 ± 0.03 0.176
pH 0–15 5.4 ± 0.44 0.081 4.9 ± 0.36 0.073
  15–30 4.6 ± 0.28 0.061 4.6 ± 0.19 0.041
C:N 0–30 13.71 ± 0.36 0.026 13.76 ± 0.49 0.035
  1. SOC soil organic carbon, BD bulk density, TN total nitrogen, CV coefficient of variation, SD standard error)