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Table 2

Soil quality determinations

ParameterMethod(s)
pH Potentiometric (1:2.5 H2O, v/v) 
EC Conductometry (1:2.5 H2O, v/v) 
Soil texture Hydrometer 
Organic carbon (OC) Walkley Black 
Total nitrogen (TN) Kjeldahl 
Av. phosphorus (AvP) Olsen 
Cation exchange capacity (CEC) Ammonium acetate (1M NH4AC) 
Soluble sodium (Na+Flame photometry 
Soluble potassium (K+Volumetric and instrumental 
Soluble calcium (Ca2+EDTA (0.05 N) titrimetric 
Soluble magnesium (Mg2+
Carbonate (CO3−2Volumetric and instrumental 
Bicarbonate (HCO3Titration with 0.01 N H2SO4 
Chloride (ClTitration using 0.05 N AgNO3 
Sulfate (SO4−2Volumetric and instrumental 
ParameterMethod(s)
pH Potentiometric (1:2.5 H2O, v/v) 
EC Conductometry (1:2.5 H2O, v/v) 
Soil texture Hydrometer 
Organic carbon (OC) Walkley Black 
Total nitrogen (TN) Kjeldahl 
Av. phosphorus (AvP) Olsen 
Cation exchange capacity (CEC) Ammonium acetate (1M NH4AC) 
Soluble sodium (Na+Flame photometry 
Soluble potassium (K+Volumetric and instrumental 
Soluble calcium (Ca2+EDTA (0.05 N) titrimetric 
Soluble magnesium (Mg2+
Carbonate (CO3−2Volumetric and instrumental 
Bicarbonate (HCO3Titration with 0.01 N H2SO4 
Chloride (ClTitration using 0.05 N AgNO3 
Sulfate (SO4−2Volumetric and instrumental 
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