Plant species | pH | Titratable acidity | Acid-buffering capacity | Titratable alkalinity | Base-buffering capacity | Acid–base buffering capacity | ||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
2019 | 2020 | 2019 | 2020 | 2019 | 2020 | 2019 | 2020 | 2019 | 2020 | 2019 | 2020 | |
Dracocephalum moldavica L | 5.22f | 5.15e | 315b | 299b | 189a | 199a | 176c | 164c | 46.7c | 42.6c | 235a | 242a |
Melissa officinalis L | 5.72b | 5.76a | 277d | 257c | 120e | 117c | 98.2f | 107e | 30.0ef | 33.0d | 150e | 150d |
Ruta graveolens L | 4.85g | 4.88f | 172f | 178d | 142c | 169.8b | 224a | 205a | 54.0b | 49.9b | 196c | 220b |
Perovskia abrotanoides Kar | 5.37e | 5.43c | 134g | 148e | 59.3h | 65d | 95.2f | 104e | 26.2g | 29.3e | 85.5g | 94.5e |
Cichorium intybus L | 5.42d | 5.41c | 140g | 128f | 70.4g | 64.4d | 115e | 106e | 32.1e | 29.6e | 102f | 94.0e |
Borago officinalis L | 5.79a | 5.74a | 344a | 285b | 130d | 108c | 126d | 140d | 39.3d | 42.9c | 169d | 151d |
Peganum harmala L | 5.59c | 5.63b | 300c | 327a | 150b | 164b | 183b | 164c | 53.6b | 48.7b | 204b | 212b |
Teucrium polium L | 5.23f | 5.32d | 133g | 132ef | 73.7g | 73.0d | 109e | 114e | 29.1f | 31.1de | 103f | 104e |
Medicago sativa | 5.82a | 5.75a | 195e | 196d | 107f | 112c | 187b | 179b | 58.8a | 55.7a | 166d | 168c |
SEM | 0.051 | 0.048 | 13.6 | 12.4 | 6.82 | 7.90 | 7.51 | 6.01 | 1.99 | 1.61 | 8.23 | 8.99 |
p-value |  < 0.0001 |  < 0.0001 |  < 0.0001 |  < 0.0001 |  < 0.0001 |  < 0.0001 |  < 0.0001 |  < 0.0001 |  < 0.0001 |  < 0.0001 |  < 0.0001 |  < 0.0001 |