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Table 8 Selected chemical characteristics of Nitisol profiles by land use type and slope

From: Characteristics of Nitisol profiles as affected by land use type and slope class in some Ethiopian highlands

Horizon Depth (cm) PH H2O OC (%) TN (%) C/N CEC and exchangeable bases (cmol(+) kg−1)
CEC Ca Mg Na K TEB PBS
Profile 1: Intensive cereal upper slope (ET_ASAA-P002)
 Ap 0–20 4.8 2.1 0.16 13 44 15 4 0.1 1.4 20 43
 AB 20–40 5.1 1.7 0.10 17 32 14 3 0.1 1.2 18 53
 Bt1 40–80 5.5 1.0 0.05 20 30 13 2 0.1 1.3 16 50
 Bt2 80–200 5.7 1.0 0.06 17 30 14 4 0.2 1.2 19 60
Profile 2: Intensive cereal lower slope (ET_AJJI-P001)
 Ap 0–20 4.7 3.6 0.20 18 42 15 7 0.4 1.2 22 52
 AB 20–42 4.9 2.0 0.12 17 49 20 7 0.4 1.1 27 55
 Bt1 42–90 4.5 1.1 0.06 18 48 20 6 0.5 1.4 26 54
 Bt2 90–200 4.9 1.1 0.07 15 45 17 5 0.4 1.3 22 49
Profile 3: Agroforestry upper slope (ET_JIMLS-SP2)
 Ah 0–12 6.2 2.5 0.25 10 37 13 14 0.2 2.2 29 78
 BA 12–30 5.5 1.3 0.12 11 41 18 10 0.6 2.0 29 70
 Bt1 30–90 5.5 0.9 0.09 10 35 14 10 0.9 2.0 25 71
 Bt2 90–145 5.3 0.6 0.06 10 32 14 8 0.2 2.1 23 72
 Bt3 145–200 5.8 0.4 0.04 10 30 12 11 0.2 2.0 18 77
Profile 4: Agroforestry lower slope (ET_JIM-G-SLP2)
 Ap 0–10 5.5 3.6 0.33 11 30 11 8 0.2 3.0 21 70
 AB 10–30 5.9 1.9 0.13 14 28 13 8 0.1 2.0 22 79
 Bt1 30–60 5.6 1.5 0.13 12 27 12 9 0.1 2.2 22 81
 Bt2 60–105 5.6 1.1 0.10 11 30 12 10 0.1 2.4 23 77
 Bt3 105–180 5.5 0.4 0.03 12 30 14 8 0.1 2.2 23 76
  1. TEB total exchangeable bases, PBS percent base saturation