Age of Soil and Water Conservation Practices on Selected Soil Properties along the Toposequence of Gerado Watershed, Habru District, Eastern Amhara, Ethiopia
Table 3
Effects of SWC age, slope position, and soil depth on exchangeable bases and CEC.
Age of SWC
Slope position
Depth (cm)
Exchangeable bases (meq/100 gr)
CEC (meq/100 gr)
K+
Ca2+
Mg2+
Na+
9-years-aged SWC
Upper
40
0.04
4.09
2.67
0.43
44.4b
20
0.77
7.40
3.22
0.91
48.2b
Middle
40
0.91
7.59
3.65
1.02
47.4b
20
0.26
6.38
2.75
0.33
51.4ab
Lower
40
0.54
6.92
3.28
0.80
53.1ab
20
0.79
6.04
3.15
1.01
57.4a
3-years-aged SWC
Upper
40
0.90
8.33
3.76
1.26
27.0d
20
0.87
5.17
3.25
0.99
28.2c
Middle
40
0.75
7.26
3.14
0.94
26.3d
20
0.78
7.20
2.75
1.09
27.1d
Lower
40
1.09
9.05
3.28
1.19
27.3d
20
0.36
8.16
3.36
0.75
28.3d
Nonconserved
Upper
40
0.23
6.18
2.72
0.43
20.1e
20
0.32
4.89
2.44
0.64
21.5e
Middle
40
0.59
6.69
3.55
0.69
20.3e
20
0.22
7.92
3.50
0.70
21.5e
Lower
40
0.39
3.93
2.81
0.65
21.2e
20
0.24
6.73
3.24
0.36
21.5e
LSD
ā
ā
0.75
3.57
1.12
0.71
1.2371
Means within a column followed by the same letter are not significantly different at P < 0.05.