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Table 3 Biochemical properties of biochar and soil

From: Application of cotton straw biochar and compound Bacillus biofertilizer decrease the bioavailability of soil cd through impacting soil bacteria

Property Biochar Soil
pH 9.50 7.76
Total nitrogen (g·kg−1) 0.89 0.46
Total P (g·kg−1) 2.54 0.82
Organic matter (g·kg−1) 625 14.73
Total K (g·kg−1) 8.62 246.83
Total Cd (mg·kg−1) 0.002 0.25
Available Cd - 0.121
Total salinity (g·kg−1) - 3.36
Carboxyl (mmol·g−1) 0.20 -
Lactone (mmol·g−1) 0.25 -
Phenolic hydroxyl (mmol·g−1) 0.21 -