Economic and Environmental Geology

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Table. 3.

Table. 3.

Initial values of major indicators

Indicator (unit) Value Common range Reference
Non-cultivated soil (NCS) Maize-cultivated soil (MCS) Soybeancultivated soil (SCS)
pH 4.8±0.2 5.8±0.1 8.2±0.2 6.0-7.0 Chae et al. (2018)
EC (μS/cm) 56±5 211±7 135±2 2,000 Chae et al. (2018)
CEC (cmolc/kg) 4.7±0.3 9.9±0.4 12.7±0.4 10-12 Kim et al. (2018)
Ex. cation
Na+ (cmolc/kg) 0.001 0.033 0.10 0.15 Kim et al. (2018)
K+ (cmolc/kg) 0.14 0.47 0.50 0.5-0.8 Chae et al. (2018)
Ca2+ (cmolc/kg) 3.0 7.8 25 5-6 Chae et al. (2018)
Mg2+ (cmolc/kg) 1.9 1.5 0.5 1.5-2.0 Chae et al. (2018)
SOM (%) 1.1 3.5 3.9 3-5 Chae et al. (2018)
Total-N (T-N) (mg/kg) 311±50 800±307 1,648±20 1,090-1,250 Onyenali et al. (2019)
NO3-N (mg/kg) 16±3 79±8 35±3 -
NH4-N (mg/kg) 17±2 20±1 270±10 -
Total-P (T-P) (mg/kg) 328±46 1,090±94 2,192±140 -
Available-P (Av. P2O5) (mg/kg) 9.1±1.0 123±2 258±10 300-550 Chae et al. (2018)
Total-S (T-S) (mg/kg) 72±25 310±10 480±24 -
Available-S (Av. S) (SO4)) (mg/kg) 60±7 111±7 21±4 10-100 Yoon et al. (1996)
Econ. Environ. Geol. 2021;54:409-25 https://doi.org/10.9719/EEG.2021.54.4.409
© 2021 Econ. Environ. Geol.