Skip to main content

Table 5 Influence of Senna obtusifolia (L.) on physical and chemical soil properties under three invasion levels (non-invaded, lightly invaded, and heavily invaded) at two locations in northern Ethiopia, with statistical results of the GLM (F, P, R2 values)

From: Effect of Senna obtusifolia (L.) invasion on herbaceous vegetation and soil properties of rangelands in the western Tigray, northern Ethiopia

  Kafta Humera Tsegede Location (Loc) Invasion level Loc × IL R2adjusted values
Heavily invaded Lightly invaded Non-invaded Heavily invaded Lightly invaded Non-invaded F (df = 1,18) P F (df = 2,18) P F (df = 2,18) P
Mean ± SE
pH 6.83 ± 0.18 6.43 ± 0.18 6.70 ± 0.18 6.56 ± 0.21 6.17 ± 0.21 6.93 ± 0.21 6.52 0.025 0.29 0.755 0.93 0.421 0.43
EC 0.08 ± 0.01 0.07 ± 0.01 0.06 ± 0.01 0.17 ± 0.01 0.09 ± 0.01 0.06 ± 0.01 14.14 0.003 14.70 0.001 8.10 0.006 0.83
OC 1.47 ± 0.25 1.13 ± 0.25 1.32 ± 0.25 0.96 ± 0.21 1.15 ± 0.21 1.12 ± 0.21 1.27 0.282 0.07 0.933 0.56 0.584 0.17
OM 2.54 ± 0.42 1.95 ± 0.42 2.28 ± 0.42 1.94 ± 0.40 1.97 ± 0.40 1.65 ± 0.40 1.27 0.282 0.07 0.933 0.56 0.584 0.17
TN 0.078 ± 0.01 0.078 ± 0.01 0.076 ± 0.01 0.076 ± 0.03 0.078 ± 0.03 0.082 ± 0.03 0.01 0.907 0.01 0.989 0.03 0.967 0.01
AP 1.43 ± 0.56 0.85 ± 0.56 1.29 ± 0.56 1.23 ± 0.47 5.19 ± 0.47 5.83 ± 0.47 6.52 0.192 0.46 0.642 0.50 0.620 0.24
AK 114.7 ± 38.6 183.7 ± 38.6 59.3 ± 38.6 232.1 ± 42.5 237.6 ± 42.5 135.3 ± 42.5 13.26 0.003 1.59 0.245 0.04 0.958 0.58
CEC 32.33 ± 2.69 33.13 ± 2.69 28.87 ± 2.69 38.13 ± 3.86 42.60 ± 3.86 41.27 ± 3.86 9.36 0.010 0.76 0.489 0.00 0.997 0.48
Ca 7.73 ± 1.32 13.67 ± 1.32 5.87 ± 1.32 6.87 ± 1.52 13.20 ± 1.52 6.47 ± 1.52 17.81 0.001 2.38 0.134 6.39 0.013 0.75
Mg 4.73 ± 0.25 5.07 ± 0.25 4.53 ± 0.25 3.20 ± 0.27 4.67 ± 0.27 4.47 ± 0.27 1.43 0.256 4.94 0.027 8.23 0.006 0.70
K 299.2 ± 33.8 267.2 ± 33.8 224.5 ± 33.8 280.5 ± 30.6 321.6 ± 30.6 332.8 ± 30.6 3.02 0.108 1.82 0.204 0.07 0.934 0.36
Na 6.49 ± 0.54 5.78 ± 0.54 4.86 ± 0.54 6.09 ± 0.74 6.97 ± 0.74 7.22 ± 0.74 3.05 0.106 1.83 0.203 0.07 0.930 0.36
Sand 19.67 ± 2.68 13.00 ± 2.68 21.00 ± 2.68 12.33 ± 2.34 22.33 ± 2.34 24.33 ± 2.34 6.97 0.022 4.40 0.037 0.75 0.492 0.59
Silt 19.67 ± 3.97 15.00 ± 3.97 16.33 ± 3.97 20.33 ± 3.70 19.00 ± 3.70 17.00 ± 3.70 0.17 0.688 0.43 0.662 0.18 0.835 0.10
Clay 60.67 ± 6.12 70.67 ± 6.12 62.00 ± 6.12 67.33 ± 5.10 58.67 ± 5.10 60.67 ± 5.10 0.79 0.391 0.61 0.559 0.43 0.661 0.19
BD 1.27 ± 0.06 1.31 ± 0.06 1.24 ± 0.06 1.28 ± 0.08 1.22 ± 0.08 1.25 ± 0.08 0.16 0.698 0.09 0.919 0.21 0.810 0.06
MC 27.82 ± 2.22 24.80 ± 2.22 30.07 ± 2.22 27.89 ± 2.34 33.52 ± 2.34 32.31 ± 2.34 4.10 0.066 0.14 0.874 3.05 0.085 0.47
  1. pH power of hydrogen ion (1,2.5), EC electrical conductivity (dS/cm), OC organic carbon (%), OM organic matter (%), TN total nitrogen (%), AP available phosphorus (ppm), AK available potassium (ppm), CEC cation exchange capacity (mEq/100 g), Ca calcium (cmol(+)/kg), Mg magnesium (cmol(+)/kg), K potassium (cmol(+)/kg), Na sodium (cmol(+)/kg), Sand sand (%), Silt silt (%), Clay clay (%); BD bulk density (g cm−3), MC moisture content (%)