Table 1 Physicochemical properties of soil samples from profile inspection pits at the field trial site
Depth (cm) | Gravels (% > 2 mm) | CaCO3 (%) | Gypsum (%) | pH | EC (dS m−1) | Cation concentration (me l−1) | Anion concentration (me l−1) | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ca2+ | Mg2+ | Na+ | K+ | HCO3− | Cl− | SO42− | ||||||
0–20 | 25.6 | 5.6 | 0.23 | 8.81 | 6.3 | 30.2 | 11.1 | 25.1 | 1.2 | 2.4 | 29.3 | 35.9 |
25–80 | 28.8 | 18.0 | 0.09 | 8.66 | 7.1 | 35.6 | 12.1 | 30.4 | 1.7 | 3.6 | 28.1 | 48.1 |
80–150 | 19.2 | 19.2 | 0.14 | 8.83 | 7.5 | 40.1 | 9.3 | 33.6 | 1.3 | 3.8 | 35.1 | 45.4 |