|
|
| Gattinger, Andreas; Müller, Adrian; Haeni, Matthias; Skinner, Colin; Fließbach, Andreas; Buchmann, Nina; Mäder, Paul; Stolze, Matthias; Smith, Pete; El-Hage Scialabbad, Nadja; Niggli, Urs. |
| In their letter, Leifeld et al. (1) argue that our metaanalysis to identify differences in soil organic carbon (SOC) between organic (OF) and nonorganic farming [conventional farming (CF)] (2) selected CF systems that were nonrepresentative. This was not the case. We included data from all available pairwise field comparisons between OF and CF identified in the literature. The observed difference in external carbon (C) inputs between OF and CF did not result from a bias in the selection of studies/treatments but was attributable to the fact that the field comparisons we analyzed (2) were not from fertilization experiments but from pairwise farming system comparisons where the design and the underlying treatments reflected the current farming practices in... |
| Tipo: Journal paper |
Palavras-chave: Air and water emissions. |
| Ano: 2013 |
URL: http://orgprints.org/25614/1/PNAS-2013-Gattinger-E985.pdf |
| |
