Table 3 Mean values (±SE) of soil properties according to grazing intensity (moderate/high) and results of one way ANOVA testing the effect of grazing intensity on soil properties in open woodlands with a long history of livestock use
Grazing intensity | ||||||
|---|---|---|---|---|---|---|
Moderate | High | F | p | |||
CI (MPa) | 2.15 | ±0.18 | 2.82 | ±0.10 | 10.59 | <0.01 |
% Clay | 5.4 | ±0.4 | 6.1 | ±0.4 | 1.51 | 0.24 |
% Sand | 80.1 | ±1.4 | 78.3 | ±1.1 | 1.05 | 0.32 |
% Silt | 14.4 | ±1.3 | 15.6 | ±1.2 | 0.44 | 0.52 |
pH | 5.50 | ±0.11 | 5.85 | ±0.13 | 4.10 | 0.07 |
SOM (g/kg) | 19.26 | ±1.92 | 31.18 | ±3.53 | 8.71 | <0.01 |
Available P (mg/kg) | 6.9 | ±1.1 | 20.2 | ±4.16 | 11.08 | <0.01 |
CEC (meq/kg) | 74.9 | ±3.8 | 104.7 | ±5.3 | 20.59 | <0.01 |
K+ (meq/kg) | 2.9 | ±0.2 | 5.2 | ±0.6 | 10.48 | <0.01 |
Ca2+ (meq/kg) | 31.7 | ±2.5 | 45.2 | ±3.5 | 9.83 | <0.01 |
Mg2+ (meq/kg) | 23.0 | ±2.6 | 20.3 | ±2.7 | 0.51 | 0.48 |
Na+ (meq/kg) | 3.1 | ±0.3 | 3.5 | ±0.3 | 1.39 | 0.26 |
Organic N (g/kg) | 0.75 | ±0.05 | 1.20 | ±0.18 | 5.76 | 0.04 |
% BS | 81 | ±5.69 | 71 | ±2.55 | 2.79 | 0.12 |