Table 2 Effect of rice husk biochar and/or limestone on soil pH and available Cd.

From: Effects of application of rice husk biochar and limestone on cadmium accumulation in wheat under glasshouse and field conditions

Treatment

pH

Available Cd(mg/kg)

Low Cd

CK

5.30 ± 0.217c

0.16 ± 0.012c

R

5.49 ± 0.137c

0.12 ± 0.020c

L

7.12 ± 0.070a

0.15 ± 0.017c

RL

7.00 ± 0.058a

0.14 ± 0.015c

High Cd

CK

6.08 ± 0.332b

0.48 ± 0.031a

R

6.08 ± 0.100b

0.42 ± 0.035b

L

7.31 ± 0.012a

0.47 ± 0.006a

RL

7.25 ± 0.064a

0.46 ± 0.021ab

  1. Data in the table are expressed as average ± standard deviation of three replicates.
  2. Treatments include CK: no amendment addition, R: 2% rice husk biochar, L: 2% limestone, and RL: 1% rice husk biochar + 1% limestone.
  3. Values followed with different letters indicate significantly different at P < 0.05.
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