Effects of Lime, Vermicompost, and Chemical P Fertilizer on Selected Properties of Acid Soils of Ebantu District, Western Highlands of Ethiopia
Table 6
Effects of treatments on exchangeable bases and effective cation exchange capacity.
Treatment
Rate
Ex. Ca
Ex. Mg
Ex. K
Ex. Na
ECEC
cmolc·kg−1
Control
—
3.5i
1.52k
0.25j
0.16j
7.85h
Lime (tons·ha−1)
2
4.5h
1.65j
0.31i
0.78h
9.37g
4
5.2g
1.88h
0.41d–g
0.90efg
9.57g
6
5.9fg
3.09b
0.42de
0.97d
10.49f
Chemical P (kg·ha−1)
20
4.7h
1.58k
0.24j
0.17j
9.00g
40
3.5i
1.53k
0.25j
0.16j
7.80h
60
3.7i
1.52k
0.23j
0.18j
7.96h
VC (tons·ha−1)
2.5
5.9fg
2.34g
0.33hi
0.27i
10.96f
5
6.4def
2.43f
0.37gh
0.86g
12.15de
7.5
6.6cde
2.67e
0.43cd
0.94de
12.59bcd
Chemical P (kg·ha−1) + lime (4 tons·ha−1)
20
5.3g
1.81i
0.39efg
0.98d
9.63g
40
5.3g
1.85hi
0.39d–g
0.95de
9.60g
60
5.3g
1.85hi
0.40d–g
0.93def
9.57g
VC (tons·ha−1) + lime (4 tons·ha−1)
2.5
6.9bcd
2.99c
0.41def
1.03c
12.46cde
5
7.2ab
3.08b
0.49b
1.13b
12.91abc
7.5
7.7a
3.44a
0.58a
1.22a
13.38a
Chemical P (kg·ha−1) + VC (5 tons·ha−1)
20
6.4def
2.42f
0.37gh
0.85g
12.12de
40
6.5def
2.45f
0.37gh
0.88fg
12.22de
60
6.5def
2.44f
0.40d–g
0.86g
11.85e
Chemical P (20 kg·ha−1) + lime (4 tons·ha−1) + VC (5 tons·ha−1)
—
7.2ab
3.08b
0.46bc
1.13b
12.90abc
Chemical P (40 kg·ha−1) + lime (4 tons·ha−1) + VC (5 tons·ha−1)
—
7.2ab
3.05b
0.47bc
1.12b
12.92abc
Chemical P (60 kg·ha−1) + lime (2 tons·ha−1) + VC (7.5 tons·ha−1)
—
7.1abc
3.10b
0.49b
1.25a
13.10ab
Chemical P (20 kg·ha−1) + lime (4 tons·ha−1) + VC (2.5 tons·ha−1)
—
6.9bcd
2.94c
0.42de
1.05c
12.48b–e
Chemical P (40 kg·ha−1) + lime (2 tons·ha−1) + VC(5 tons·ha−1)
—
6.1ef
2.84d
0.47bc
1.07c
12.34cde
F-test
—
CV (%)
—
4.5
1.18
4.63
3
2.46
Means followed by the same letter within a column are not significantly different at ; significant at using Duncan’s multiple range test; Ex. Ca, exchangeable calcium; Ex. Mg, exchangeable magnesium; Ex. K, exchangeable potassium; Ex. Na, exchangeable sodium; ECEC, effective cation exchange capacity; chemical P, chemical phosphorus; VC, vermicompost; CV, coefficient of variation.