Table 2 Calibration factor of soil EC for soil water content without and with added organic matter
Samples | Soil texture | No treatment | Added organic matter | ||||
|---|---|---|---|---|---|---|---|
Calibration factor | Intercept | Correlation coefficient | Calibration factor | Intercept | Correlation coefficient | ||
SiCL | Silt clay loam | 0.81 | − 0.06 | 0.97 | 2.00 | − 0.17 | 0.99 |
L-1 | Loam | 0.63 | − 0.01 | 0.99 | 1.10 | − 0.07 | 0.99 |
L-2 | Loam | 1.32 | − 0.02 | 0.99 | 2.08 | − 0.16 | 0.99 |
L-3 | Loam | 0.57 | − 0.02 | 0.99 | 1.61 | − 0.14 | 0.99 |
L-4 | Loam | 0.77 | − 0.04 | 0.99 | 2.40 | − 0.17 | 0.99 |
L-5 | Loam | 1.56 | − 0.12 | 0.99 | 1.48 | − 0.13 | 0.99 |
SL-1 | Sandy loam | 0.75 | − 0.04 | 0.99 | 2.91 | − 0.22 | 0.99 |
SL-2 | Sandy loam | 0.74 | − 0.03 | 0.99 | 2.41 | − 0.18 | 0.99 |
SL-3 | Sandy loam | 0.72 | − 0.02 | 0.98 | 3.92 | − 0.12 | 0.99 |
SL-4 | Sandy loam | 0.57 | − 0.00 | 0.99 | 2.09 | − 0.18 | 0.99 |