Table 1.
Physical and chemical characteristics of soil used for cultivation of Calendula officinalis L. plants.
| Soil characteristics | Soil depth |
|
|---|---|---|
| (0–30) | (30–50) | |
| A. Physical | ||
| Sand (%) | 90.32 | 92.32 |
| Silt (%) | 2.0 | 2.0 |
| Clay (%) | 7.68 | 5.68 |
| Soil texture | Sandy | Sandy |
| B. Chemical | ||
| EC (dS m−1)* | 1.42 | 1.57 |
| pH | 7.68 | 7.71 |
| OM (%) | 1.82 | 1.31 |
| CEC (meq 100 g−1) | 35.99 | 33.87 |
| CaCO3 (%) | 2.39 | 2.13 |
| N (ppm) | 45.82 | 57.21 |
| P (ppm) | 7.98 | 6.11 |
| K (ppm) | 120.14 | 106.73 |
*
EC: electrical conductivity; OM: organic matter; CEC: cation exchange capacity.