Table 3. Descriptive statistics of soil wet chemistry variables.
| Variable | Min | Max | Mean | Std. deviation | Correlation matrix | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| pH | EC (dS m-1) | OC (%) | Available N (kg ha-1) | Available P (kg ha-1) | Available K (kg ha-1) | Available S (mg kg-1) | Clay (%) | Sand (%) | Silt (%) | |||||
| pH | 4.8 | 10.0 | 6.7 | 1.0 | - | |||||||||
| EC (dS m-1) | 0.0 | 0.8 | 0.2 | 0.1 | Sa | - | ||||||||
| OC (%) | 0.1 | 0.9 | 0.4 | 0.1 | S | S | - | |||||||
| Available N (kg ha-1) | 77.0 | 308.0 | 175.9 | 36.9 | NS | NSa | NS | - | ||||||
| Available P (kg ha-1) | 4.9 | 21.7 | 11.3 | 3.9 | S | NS | NS | NS | - | |||||
| Available K (kg ha-1) | 24.0 | 432.9 | 134.8 | 90.4 | S | S | S | S | S | - | ||||
| Available S (mg kg-1) | 0.2 | 0.9 | 0.3 | 0.1 | S | S | NS | NS | NS | NS | - | |||
| Clay (%) | 10.8 | 44.8 | 25.9 | 11.7 | S | S | S | S | S | S | S | - | ||
| Sand (%) | 17.2 | 83.2 | 54.6 | 24.2 | S | S | S | S | S | S | S | S | - | |
| Silt (%) | 4.0 | 42.0 | 19.4 | 12.7 | S | S | S | S | S | S | S | S | S | - |
a S and NS are significantly and non-significantly different from 0 with α = 0.05, respectively.