Phosphorus Status, Inorganic Phosphorus Forms, and Other Physicochemical Properties of Acid Soils of Farta District, Northwestern Highlands of Ethiopia
Table 4
Exchangeable cations and exchange properties.
Sampling site
Exchangeable cations and CEC (cmolc kg−1)
PAls (%)
PBS (%)
Ca
Mg
K
Ac
Al
CECsoil
CECclay
ECEC
Ayermarefiya
12.3
4.6
0.55
1.51
1.10
31.2
46.4
19.0
3.5
56.1
Abalomeda
14.6
5.0
0.20
1.58
1.39
35.4
54.6
21.5
3.9
56.3
Kumbelie
7.9
2.4
0.23
2.31
1.50
24.7
39.2
12.9
6.1
42.8
Korekonch
8.7
2.1
0.28
3.64
3.21
27.8
41.5
14.8
11.5
40.2
Agawer I
10.1
2.2
0.55
0.84
0.27
30.9
46.2
13.8
0.9
41.9
Agawer II
8.3
2.8
0.23
0.96
0.42
25.9
42.7
12.4
1.6
44.4
Jura I
9.5
2.6
0.20
0.63
0.20
28.1
39.3
13.0
0.7
44.2
Jura II
5.8
1.9
0.84
0.86
0.37
20.6
32.0
9.5
1.8
41.9
Mean
9.6
2.9
0.39
1.54
1.13
28.1
42.7
14.6
3.8
46.0
Ac = exchangeable acidity; CECsoil and CECclay = cation exchange capacity of the soil and clay fraction, respectively; ECEC = effective cation exchange capacity; PAls and PBS = percentage of Al saturation and base saturation, respectively.
