Citation
Guardia, Guillermo and Téllez del Río, Ángela and Garcia Marco, Sonia and Tenorio, J. L. and Vallejo Garcia, Antonio
(2014).
Crop rotation and residues influence N2O emission and N efficiency rather than tillage under a rainfed Mediterranean agroecosystem.
In: "Proceedings of the 18th Nitrogen Workshop", 30/06/2014 - 03/07/2014, Lisboa. Portugal. ISBN 978-972-8669-56-0. pp. 109-110.
Abstract
Conservation tillage and crop rotation have spread during the last decades because promotes several positive effects (increase of soil organic content, reduction of soil erosion, and enhancement of carbon sequestration) (Six et al., 2004). However, these benefits could be partly counterbalanced by negative effects on the release of
nitrous oxide (N2O) (Linn and Doran, 1984). There is a lack of data on long-term tillage system study, particularly in Mediterranean agro-ecosystems. The aim of this study was to evaluate the effects of long-term (>17 year) tillage systems (no tillage (NT), minimum tillage (MT) and conventional tillage (CT)); and crop rotation (wheat
(W)-vetch (V)-barley (B)) versus wheat monoculture (M) on N2O emissions. Additionally, Yield-scaled N2O emissions (YSNE) and N uptake efficiency (NUpE) were assessed for each treatment.
