Table 1.
Sampling sites and main physical and chemical characteristics of the considered soils.
| OR | CR | UN | GI | CA | |
|---|---|---|---|---|---|
| Site | Palermo Orleans | Bari CREA | Palermo Campus UNIPA | Taranto Ginosa | Taranto Castellaneta |
| Latitude, Longitude | 38.107208N 13.349832 E | 41.110366N 16.877836 E | 38.107184N 13.351942E |
40.461383N 16.84105 E |
40.51246N 16.886826 E |
| Land use | Grass lawn | Fallow | Citrus orchard | Vineyard | Citrus orchard |
| Clay, Cl (%) | 30 | 17 | 18 | 16 | 6 |
| Silt, Si (%) | 34 | 40 | 30 | 13 | 21 |
| Sand, Sa (%) | 36 | 43 | 52 | 71 | 73 |
| Texture USDA | clay loam | loam | sandy loam | sandy loam | sandy loam |
| Texture group | fine | intermediate | coarse | coarse | coarse |
| Organic Matter, OM (%) | 3.65 | 4.57 | 6.15 | 1.55 | 0.60 |
| pH | 7.69 | 7.53 | 7.99 | 7.90 | 7.35 |
| EC (dS m−1) | 0.29 | 0.42 | 0.34 | 0.13 | 0.20 |
| CEC (cmol kg−1) | 28.7 | 11.76 | 25.31 | 6.14 | 5.40 |
| N (%) | 0.21 | 0.24 | 0.32 | 0.099 | 0.029 |
| C (%) | 2.12 | 2.65 | 3.57 | 0.90 | 0.35 |
| C/N ratio | 10.10 | 11.04 | 11.16 | 9.09 | 12.07 |
| WRB classification [51] | Chromic Cambisol (Loamic) | Chromic Cambisol (Loamic) | Terric Chromic Cambisol (Loamic) | Chromic Cambisol (Loamic) | Terric Chromic Cambisol (Loamic) |