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Table 5 Soil pH, soil organic carbon, total nitrogen and carbon to nitrogen ratios in relation to the land use types (mean ± SE)

From: Soil property variations in relation to exclosure and open grazing land use types in the Central Rift Valley area of Ethiopia

Variables

Depth (cm)

Land use

Overall

Exclosure

Grazing land

pH

0–10

7.15 (±0.05)

7.18 (±0.09)

7.17 (±0.05)a

10–20

7.16 (±0.07)

6.99 (±0.11)

7.07 (±0.07)a

Overall

7.16 (±0.04)a

7.08 (±0.07)a

 

SOC (%)

0–10

3.45 (±0.33)

3.06 (±0.21)

3.25 (±0.19)a

10–20

3.12 (±0.24)

2.74 (±0.21)

2.93 (±0.16)b

Overall

3.29 (±0.20)a

2.90 (±0.15)b

 

TN (%)

0–10

0.26 (±0.01)

0.25 (±0.01)

0.25 (±0.07)a

10–20

0.24 (±0.007)

0.23 (±0.34)

0.23 (±0.17)a

Overall

0.25 (±0.006)a

0.24 (±0.17)a

 

C/N

0–10

13.26 (±1.41)

12.24 (±1.11)

12.74 (±0.88)a

10–20

13.03 (±1.04)

11.91 (±1.27)

12.46 (±0.87)a

Overall

13.12 (±0.86)a

12.1 (±0.87)a

 
  1. Overall means followed by the same letter (s) across columns and rows are not significantly different (p = 0.05) with respect to land uses and soil depth
  2. SOC soil organic carbon, TN total nitrogen, C/N carbon to nitrogen ratio