Environmental Engineering Reference
In-Depth Information
Table 15.3 Mean values
90 per cent confidence interval of soil chemical properties under four indigenous trees canopies and in the
open grassland on luvisol in the north-east savanna zone of Ghana
Diospyrum
Faidhebia albida
mespiliformis
Vitellaria paradoxa
Parkia biglobosa
Tree
Tree
Tree
Tree
Soil property
Open
canopy
Open
canopy
Open
canopy
Open
canopy
PH (KCI)
6.00
6.00
5.00
6.00
5.00
5.00
5.00
6.00*
% organic matter
0.79
1.88*
0.80
1.21*
0.66
1.20*
0.52
1.12*
% total nitrogen
0.04
0.09*
0.03
0.06*
0.03
0.05*
0.02
0.05*
C:N ratio
14.00
12.00
13.00
12.00
17.00
14.00
15.00
12.00
Available P (mg kg
1
)
0.81
2.61*
1.00
2.30*
1.34
1.72*
0.48
1.68*
Exchange cations
(cmol kg
1
)
Calcium
2.27
3.31*
3.02
4.50*
1.84
2.73
2.80
4.23*
Magnesium
1.37
1.78
1.75
2.72*
1.40
1.77
1.53
2.75*
Potassium
0.12
0.19*
0.12
0.15
0.08
0.17*
0.11
0.23*
Sodium
0.27
0.49*
0.22
0.67*
0.22
0.39*
0.24
0.48*
Total exchangeable
bases (cmol kg
1
)
4.03
5.59
5.11
8.04*
3.56
5.06
4.35
7.52*
Cation exchange
Capacity (cmol kg
1
)
5.12
6.50
6.26
8.49*
4.64
5.86
5.65
9.11*
% base saturation
78.98
84.52
81.45
94.95*
76.17
87.09*
77.43
81.95
* Differences significant at
P
0.05 between values for canopy and open lands.
