| Region | Depth (cm) | Independent variable (x) | Dependent variable (y) | r | R2 |
|
| 0 - 30 | OM | Foliar N | −0.43 (M) | 0.19 |
|
| N-NO3 | Foliar N | −0.47 (M) | 0.22 | |
| Costa Chica |
|
|
|
|
|
|
| 30 - 60 | OM | Foliar N | 0.58 (M) | 0.33 |
|
| N-NO3 | Foliar N | 0.71 (H) | 0.50 | |
|
| 0 - 30 | OM | Foliar N | 0.64 (M) | 0.41 |
|
| N-NO3 | Foliar N | 0.068 (L) | 0.004 | |
| Costa Grande |
|
|
|
|
|
|
| 30 - 60 | OM | Foliar N | 0.57 (M) | 0.33 |
|
| N-NO3 | Foliar N | 0.003 (L) | 0.00 |