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Table 1 Analysis of selected physical–chemical properties of soils

From: Status of soil organic carbon and nitrogen stocks in Koga Watershed Area, Northwest Ethiopia

Soil properties

Depth (cm)

Land use

Irrigation farm

Rainfed farm

Mean ± SD

CV

Mean + SD

CV

SOC (%)

0–15

2.73 ± 0.15

0.055

2.67 ± 0.16

0.059

 

15–30

2.34 ± 0.20

0.085

2.09 ± 0.18

0.086

BD (g cm−3)

0–15

1.06 ± 0.21

0.198

1.07 ± 0.16

0.149

 

15–30

1.12 ± 0.08

0.071

1.19 ± 0.17

0.143

TN (%)

0–15

0.20 ± 0.04

0.200

0.18 ± 0.02

0.111

 

15–30

0.17 ± 0.03

0.176

0.17 ± 0.03

0.176

pH

0–15

5.4 ± 0.44

0.081

4.9 ± 0.36

0.073

 

15–30

4.6 ± 0.28

0.061

4.6 ± 0.19

0.041

C:N

0–30

13.71 ± 0.36

0.026

13.76 ± 0.49

0.035

  1. SOC soil organic carbon, BD bulk density, TN total nitrogen, CV coefficient of variation, SD standard error)