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dc.contributor.authorVilarrasa-Nogué, Marta
dc.contributor.authorTeira Esmatges, Maria Rosa
dc.contributor.authorVillar Mir, Josep Ma.
dc.contributor.authorRufat i Lamarca, Josep
dc.description.abstractAgronomic practices may mitigate greenhouse gas emissions (GHG) from crops. Appropriate nitrogen (N) and irrigation management provide the potential to reduce nitrous oxide (N2O) and methane (CH4) emissions. However, there is little information about the combination of both practices on the GHG emissions from olive orchards. This four-year study was conducted to qualitatively compare the effect of N doses applied through two drip irrigation strategies on N2O and CH4 emissions in a super-intensive (1010 trees ha−1) olive orchard. The design (randomised blocks) was asymmetric: 0,50 and 100 kg N ha−1yr−1 were tested with full irrigation (FI; 2013 to 2016), but only 0 and 50 kg N ha−1yr−1 were tested with regulated deficit irrigation (RDI; 2014 to 2016). The study shows that the soil acted as a main sink of N2O and CH4, regardless of the soil water content. Methane oxidation increased with N dose in the FI strategy (significant in 2013 and 2015). Overall, there was a tendency of yield to increase with the N dose without increasing emissions and without depending of the irrigation strategy. However, these results were not significant. Further confirmation of this tendency is necessary; particularly comparing FI + N100 (most promising treatment in terms of profitability) with the RDI + N100 (not available in this study) water-saving strategy.ca_ES
dc.description.sponsorshipThe study was funded by the project RTA 2012-0059. Special thanksare given to Amadeu Arbonés for the information provided about the ol-ive orchard of this study. The PhD student Marta Vilarrasa-Nogué isgrateful for the grant provided by University of Lleida.ca_ES
dc.publisherElsevier B.V.ca_ES
dc.relation.isformatofVersió postprint del document publicat a:
dc.relation.ispartofScience of the total environment, 2019, vol. 677, p. 350-361ca_ES
dc.rightscc-by-nc-nd, (c) Elsevier, 2019ca_ES
dc.subjectRegulated deficit irrigationca_ES
dc.subjectSuper-intensive olive orchardca_ES
dc.subject.otherGasos d'efecte hivernacleca_ES
dc.titleEffect of N dose on soil GHG emissions from a drip-fertigated olive (OleaeuropaeaL.) orchardca_ES

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cc-by-nc-nd, (c) Elsevier, 2019
Except where otherwise noted, this item's license is described as cc-by-nc-nd, (c) Elsevier, 2019