Environmental Engineering Reference
In-Depth Information
Table 11.4 Residual effect of treatments and initial soil value (0-15 cm depth)
Treatment
% N
% OM
% Org. C
PH
P (mg/kg)
K (cmol/kg)
Na (cmol/kg)
Mg (cmol/kg)
Ca (cmol/kg)
Initial
0.09
1.43
0.83
6.80
6.00
0.13
0.08
3.20
6.52
T 0
0.07
0.89
0.51
6.60
4.22
0.10
0.07
1.84
5.24
T 1
0.11
1.43
0.83
6.50
8.18
0.14
0.11
1.60
7.68
T 2
0.13
2.28
1.32
7.20
16.02
0.21
0.11
3.28
9.88
T 3
0.13
2.21
1.28
7.10
14.68
0.20
0.11
2.72
9.16
LSD (1%)
0.04
0.62
0.51
0.55
4.14
0.04
0.02
-
3.48
LSD (5%)
0.02
0.45
0.26
0.39
3.00
0.03
0.014
1.65
2.52
CV (%)
39.84
47.02
45.37
7.82
55.51
30.23
36.69
58.18
31.85
Source: Amoakohene (1999)
T 0
Burnt field no external input.
Residues lest no external input.
T 1
Residues left 4 t/ha 1 poultry manure (PM).
T 2
Residues left 4 t/ha 1 PM low NPK fertilizer (30-20-20 kg/ha 1 ).
T 3
 
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