Table 1.
Chemical properties of rhizosphere soils used in this study.
| Property | Wheat cultivars | |||
|---|---|---|---|---|
| Feña (F) | Patras (P) | Joker (J) | Rocky (R) | |
| N (mg kg−1) | 60 | 52.7 | 63.1 | 55.3 |
| P (mg kg−1) | 35 | 29 | 37 | 31 |
| K (mg kg−1) | 156 | 141 | 138 | 159 |
| pH (H2O) | 6.35 | 6.31 | 6.39 | 6.29 |
| Organic matter (%) | 16 | 15 | 16 | 16 |
| K (cmol(+) kg−1) | 0.4 | 0.74 | 0.25 | 0.43 |
| Na (cmol(+) kg−1) | 0.03 | 0.07 | 0.02 | 0.03 |
| Ca (cmol(+) kg−1) | 15.87 | 14.35 | 16.23 | 14.07 |
| Mg (cmol(+) kg−1) | 1.46 | 1.49 | 1.5 | 1.51 |
| Al (cmol(+) kg−1) | 0.01 | 0.03 | 0.01 | 0.04 |
| CEC (cmol(+) kg−1) | 17.77 | 16.68 | 18.01 | 16.08 |
| Σ Bases (cmol(+) kg−1) | 17.76 | 16.65 | 18 | 16.04 |
| Al saturation (%)a | 0.06 | 0.18 | 0.06 | 0.25 |
a
Calculated as Al/cation exchange capacity [Σ (K, Ca, Mg, Na, and Al)] × 100.