Table 1 Characteristics of organic materials used in the experiment
Chemical characteristics | Unit | Vermicompost | Date palm biochar | Pistachio biochar |
|---|---|---|---|---|
pH-KCl | – | 7.5 ± 0.0 | 9.0 ± 0.2 | 7.7 ± 0.1 |
EC | dS/m | 2.0 ± 0.3 | 7.5 ± 0.8 | 9.7 ± 0.8 |
Total nitrogen | % | 2.0 ± 0.1 | 0.7 ± 0.1 | 0.6 ± 0.3 |
SOC | % | 29.0 ± 1.1 | 72.0 ± 4.1 | 73.2 ± 2.5 |
Phosphorus | g/kg | 1.8 ± 0.2 | 1.5 ± 0.3 | 1.3 ± 0.1 |
Potassium | g/kg | 30.1 ± 2.5 | 8.3 ± 0.4 | 6.4 ± 0.5 |
Calcium | g/kg | 47.8 ± 3.7 | 5.9 ± 0.2 | 6.1 ± 0.7 |
Magnesium | g/kg | 10.8 ± 1.0 | 3.3 ± 0.2 | 3.8 ± 0.3 |
C:N | – | 14.5 ± 1.6 | 102.8 ± 6.2 | 122.0 ± 8.5 |