Soil chemical properties
Soil nutrients (pHH2O, pHKCl, N-NH4+, N-NO3−, K and total P,
and available P), OC and total N contents and the cationic exchange capacity (CEC) were determined according to the official methods of the Vietnamese Academy of Agricultural Science (VAAS) and
adapted from the methods of Rayment and Higginson’s (1992).
Soil chemical propertiesSoil nutrients (pHH2O, pHKCl, N-NH4+, N-NO3−, K and total P,and available P), OC and total N contents and the cationic exchange capacity (CEC) were determined according to the official methods of the Vietnamese Academy of Agricultural Science (VAAS) andadapted from the methods of Rayment and Higginson’s (1992).
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