Table 2 Effect of biochar levels on soil chemical properties.

From: Short term effects of biochar on soil chemical properties, growth, yield, quality, and shelf life of tomato

Biochar (t ha−1)

SOM (%)

N (%)

P (mg kg−1)

K (cmol kg−1)

Ca (cmol kg−1)

Mg (cmol kg−1)

Site A

Site B

Site A

Site B

Site A

Site B

Site A

Site B

Site A

Site B

Site A

Site B

Control

1.06c

1.08c

0.09c

0.09c

4.11e

4.18e

0.16d

0.15e

1.56e

1.59e

0.29d

0.30d

10

2.04b

2.06b

0.10b

0.11b

7.81d

7.91d

0.18c

0.16d

10.33d

10.58d

4.21c

4.35c

20

2.15b

2.18b

0.11ab

0.11ab

11.41c

11.38c

0.18c

0.18c

11.48c

11.51c

7.81b

7.78b

30

2.20ab

2.22ab

0.11ab

0.11ab

14.32b

14.14b

0.20b

0.20b

13.32b

14.52b

8.42a

8.51a

40

2.44a

2.45a

0.12a

0.12a

17.38a

18.55a

0.22a

0.23a

15.68a

15.75a

8.96a

8.95a

  1. Values followed by similar letters under the same column are not significantly different at p = 0.05 according to Duncan’s multiple range test.
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