Table 1.
Chemical and physical properties at T1 and T2 sampling times. For each site, different letters indicate statistically different values among the treatments (P < 0.05).
| TOC | THC | AHC | TN | WSC | Porosity | ||
|---|---|---|---|---|---|---|---|
| g kg−1 | g kg−1 | g kg−1 | g kg−1 | g kg−1 | mm3 g−1 | ||
| T1 | |||||||
| Abanilla-Spain | S-C | 5.1b | 0.81b | 0.58b | 0.72b | 82a | 192b |
| S-WOF | 27.6a | 2.82a | 1.96a | 3.28a | 225b | 203a | |
| Alberese-Italy | I-CA | 12.6b | 1.35b | 0.89b | 1.14b | 63b | 131b |
| I-BA | 18.7a | 1.93a | 1.35a | 1.38a | 70a | 147a | |
| Puch-Germany | P-CA | 20.0a | 3.09a | 1.59a | 1.79a | 128a | 204a |
| P-IT | 10.3b | 2.05c | 1.13c | 0.80c | 98b | 161b | |
| P-C | 11.5b | 2.45b | 1.34b | 0.98b | 96b | 160b | |
|
| |||||||
| T2 | |||||||
| Abanilla-Spain | S-C | 5.9b | 0.91b | 0.52b | 0.75b | 76b | 198b |
| S-WOF | 24.0a | 2.63a | 1.49a | 2.52a | 154a | 217a | |
| Alberese-Italy | I-CA | 13.1b | 1.38a | 0.69b | 0.81b | 46b | 142b |
| I-BA | 18.2a | 1.41a | 0.95a | 1.64a | 53a | 154a | |
| Puch-Germany | P-CA | 17.3a | 2.56a | 1.58a | 1.53a | 75a | 210a |
| P-IT | 8.0c | 2.19c | 1.08c | 0.57c | 65b | 174b | |
| P-C | 11.4b | 2.40b | 1.51a | 1.18b | 58c | 167b | |
TOC, total organic carbon; THC, total humic carbon; AHC, active humic carbon; TN, total nitrogen; WSC, water soluble carbon.
C, control; WOF, waste organic fraction added; CA, conventional agriculture; BA, organic agriculture; IT, intensive tillage. T1, initial sampling time; T2, one year later.