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Environmental Systems Research

Table 8 Interaction effects of land uses by soil depths on exchangeable bases, exchangeable acidity, CEC, PBS, and ECEC of soils of the study area

From: Assessment of soil fertility status of Vertisols under selected three land uses in Girar Jarso District of North Shoa Zone, Oromia National Regional State, Ethiopia

Land use × soil depth

Soil parameters

 

Ca

Mg

K

Na

PBS

CEC

ECEC

EA

CUL

 0–20

6.28e

4.30

0.37

0.05e

24.93d

44.21

13.78

2.76a

 20–40

7.14e

5.25

0.26

0.09bc

30.31c

41.90

14.36

1.66b

GRL

 0–20

17.20a

9.52

0.42

0.10b

50.42a

54.03

28.55

1.31c

 20–40

14.04b

8.23

0.40

0.12a

42.60b

53.50

24.02

1.23c

NFL

 0–20

9.42d

5.94

0.38

0.07d

30.36c

52.10

17.37

1.55b

 20–40

10.48c

5.03

0.41

0.08cd

31.90c

50.12

17.09

1.10d

LSD (0.05)

0.96

NS

NS

0.01

2.35

NS

NS

0.12

SEM (±)

0.47

0.14

0.01

0.00

0.75

082

0.87

0.06

CV (%)

7.48

3.74

3.34

8.42

3.68

2.88

5.82

6.11

  1. Means within a column for the same factor followed by the same letters in superscripts are not significantly different from each other at P = 0.05
  2. LSD least significant difference, NS not significant, SEM standard error of mean, CV coefficient of variation, CEC cation exchange capacity, ECEC effective cation exchange capacity, PBS percent base saturation, CUL cultivated land, GRL grazing land, NFL natural forest land
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