The Effect of Phosphorus Fertilizer Sources and Lime on Acidic Soil Properties of Mollic Rhodic Nitisol in Welmera District, Central Ethiopia
Table 3
Effects of different phosphorus fertilizer sources, rate, and lime application on the major soil properties of Welmera at harvesting.
Source of var.
pH
EA cmol·kg−1s
AP ppm
PAS%
OC%
TN%
Mg cmol·kg−1s
Ca cmol·kg−1s
K cmol·kg−1s
CEC cmol·kg−1s
SO4/S ppm
Location
OnS
5.21A
0.13B
4.38B
0.64B
1.24B
0.095B
3.94B
7.85B
0.86A
20.8B
7.48
OnF
4.79B
1.32A
7.62A
4.92A
1.63A
0.141A
4.79A
9.96A
0.69B
27.1A
4.82
LSD
0.09
0.21
0.76
0.83
0.15
0.014
0.32
1.78
0.106
1.14
Ns
P sources
P1
4.98
0.49C
6.84A
1.86C
1.51
0.121AB
4.27
9.15
0.81
24.4
6.53
P2
5.03
0.62BC
6.02AB
2.34BC
1.38
0.129A
4.36
9.88
0.76
24.0
6.23
P3
5.01
0.85AB
5.5B
3.16AB
1.45
0.104B
4.28
8.22
0.74
24.2
5.57
P4
4.99
0.94A
5.63B
3.77A
1.41
0.118AB
4.56
8.36
0.79
23.2
6.31
LSD
0.14
0.29
1.1
1.17
0.22
0.02
Ns
Ns
Ns
Ns
Ns
P ferz. rate
PR1
5.01
0.66
5.78
2.61
1.44
0.119
4.46
8.60
0.77
24.2
6.97
PR2
5.00
0.77
6.21
2.95
1.43
0.117
4.26
9.21
0.78
23.7
5.35
LSD
Ns
Ns
Ns
Ns
Ns
Ns
Ns
Ns
Ns
Ns
Ns
Lime
LM1
4.99
0.77
5.92
3.11A
1.36B
0.107B
4.51
9.18
0.65B
24.5A
8.36A
LM2
5.02
0.68
6.08
2.45B
1.51A
0.129A
4.22
8.62
0.89A
23.4B
3.96B
LSD
Ns
Ns
Ns
0.15
Ns
0.014
Ns
Ns
0.11
1.14
2.79
Mean
5.00
0.72
5.998
2.78
1.44
16.64
4.36
8.9
0.78
23.9
6.16
CV %
2.6
7.46
17.7
20.9
14.5
0.118
10.02
27.51
18.78
6.51
32.2
Means with the same letters have no significant difference, Ns: not significant, significant @ < 0.05 highly significant @ < 0.01, and significant @ < 0.001. EA: exchangeable acidity, AP: available P, PAS: percent acid saturation, OC: organic carbon in %, TN: total nitrogen, CEC: cation exchange capacity, SO4/S: sulfate-sulfur. cmol kg−1 of soil = meq 100−1 gram of soil.
