No-tillage reduces long-term yield-scaled soil nitrous oxide emissions in rainfed Mediterranean agroecosystems: a field and modelling approach

There is a strong need to identify agricultural management practices that maintain agronomic productivity while diminishing soil N2O emissions. The yield-scaled N2O emissions (YSNE) indicator can help to evaluate the adequacy of a given agricultural practice under both aspects. Long-term (18-yr) soi...

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Autores: Plaza Bonilla, Daniel, Álvaro-Fuentes, Jorge, Bareche Sahún, Javier, Pareja Sánchez, Evangelina, Justes, Éric, Cantero-Martínez, Carlos
Tipo de documento: artigo
Estado:Versión aceptada para publicación
Data de publicação:2018
País:España
Recursos:Universitat de Lleida (UdL)
Repositório:Repositori Obert UdL
OAI Identifier:oai:repositori.udl.cat:10459.1/63411
Acesso em linha:https://doi.org/10.1016/j.agee.2018.04.007
http://hdl.handle.net/10459.1/63411
Access Level:Acceso aberto
Palavra-chave:Emission factor
Mediterranean
N fertilization
Nitrous oxide
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spelling No-tillage reduces long-term yield-scaled soil nitrous oxide emissions in rainfed Mediterranean agroecosystems: a field and modelling approachPlaza Bonilla, DanielÁlvaro-Fuentes, JorgeBareche Sahún, JavierPareja Sánchez, EvangelinaJustes, ÉricCantero-Martínez, CarlosEmission factorMediterraneanN fertilizationNitrous oxideThere is a strong need to identify agricultural management practices that maintain agronomic productivity while diminishing soil N2O emissions. The yield-scaled N2O emissions (YSNE) indicator can help to evaluate the adequacy of a given agricultural practice under both aspects. Long-term (18-yr) soil water and mineral N dynamics, crop biomass and yields, and 2011-2012 soil N2O emissions and ancillary variables were measured on barley (Hordeum vulgare L.) production in a tillage (conventional tillage, CT; no-tillage, NT) and N rate (0, 60 and 120 kg N ha-1) combination under rainfed Mediterranean conditions (NE Spain). Once evaluated, the STICS soil-crop model was used to simulate the 18-yr soil N2O emissions of each tillage system under increasing N rates (0, 30, 60, 90 and 120 kg N ha-1) in order to identify optimum management to reduce YSNE, being initialized with observed data. Cropping season precipitation was highly variable during the experiment, being a key regulating mechanism for crop yields and simulated soil N2O emissions. Crop yield under NT with N outperformed CT in 11 years. STICS performed reasonably well when simulating cumulative N2O emissions and ancillary variables with model efficiencies greater than 0.5. The 18-yr average simulated cumulative N2O emissions were 0.50, 0.82 and 1.09 kg N2O-N ha-1 yr-1 for CT-0, CT-60 and CT-120, respectively, and they were 0.53, 0.92 and 1.19 kg N2O-N ha-1 yr-1 for their counterparts under NT. These averages mask a large variability between years, according to precipitation. The 18-yr mean yield-scaled N2O emissions were 2.8 to 3.3 times lower under NT, compared to the corresponding CT treatments. Under CT, N application would increase YSNE in most years while YSNE would be more resilient to the application of increasing N rates under NT. Our work demonstrates that in rainfed Mediterranean systems NT is a win-win strategy for the equilibrium between agricultural productivity and low soil N2O emissions.We thank Silvia Martí, Carlos Cortés and Montse Llovera for their technical assistance. Dr. Joël Léonard kindly provided us the model version updated for soil N2O simulation. The valuable comments of three anonymous reviewers greatly improved the quality of this manuscript. This work was supported by the Comisión Interministerial de Ciencia y Tecnología of Spain (Project Grants AGL 2010-22050-C03-01/02 and AGL2013-49062-C4-1/4-R). DPB received a “Juan de la Cierva-Formación” postdoctoral grant from the Ministerio de Economía y Competitividad of Spain (ref. FJCI-2014-19570).Elsevier2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://doi.org/10.1016/j.agee.2018.04.007http://hdl.handle.net/10459.1/63411reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL)Inglésinfo:eu-repo/grantAgreement/MICINN//AGL2010-22050-C03-01info:eu-repo/grantAgreement/MINECO//AGL2013-49062-C4-1-Rinfo:eu-repo/grantAgreement/MICINN//AGL2010-22050-C03-02info:eu-repo/grantAgreement/MINECO//AGL2013-49062-C4-4-RVersió postprint del document publicat a: https://doi.org/10.1016/j.agee.2018.04.007Agriculture Ecosystems & Environment, 2018, vol. 262, p. 36-47cc-by-nc-nd (c) Elsevier, 2018info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/oai:repositori.udl.cat:10459.1/634112026-06-24T12:42:17Z
dc.title.none.fl_str_mv No-tillage reduces long-term yield-scaled soil nitrous oxide emissions in rainfed Mediterranean agroecosystems: a field and modelling approach
title No-tillage reduces long-term yield-scaled soil nitrous oxide emissions in rainfed Mediterranean agroecosystems: a field and modelling approach
spellingShingle No-tillage reduces long-term yield-scaled soil nitrous oxide emissions in rainfed Mediterranean agroecosystems: a field and modelling approach
Plaza Bonilla, Daniel
Emission factor
Mediterranean
N fertilization
Nitrous oxide
title_short No-tillage reduces long-term yield-scaled soil nitrous oxide emissions in rainfed Mediterranean agroecosystems: a field and modelling approach
title_full No-tillage reduces long-term yield-scaled soil nitrous oxide emissions in rainfed Mediterranean agroecosystems: a field and modelling approach
title_fullStr No-tillage reduces long-term yield-scaled soil nitrous oxide emissions in rainfed Mediterranean agroecosystems: a field and modelling approach
title_full_unstemmed No-tillage reduces long-term yield-scaled soil nitrous oxide emissions in rainfed Mediterranean agroecosystems: a field and modelling approach
title_sort No-tillage reduces long-term yield-scaled soil nitrous oxide emissions in rainfed Mediterranean agroecosystems: a field and modelling approach
dc.creator.none.fl_str_mv Plaza Bonilla, Daniel
Álvaro-Fuentes, Jorge
Bareche Sahún, Javier
Pareja Sánchez, Evangelina
Justes, Éric
Cantero-Martínez, Carlos
author Plaza Bonilla, Daniel
author_facet Plaza Bonilla, Daniel
Álvaro-Fuentes, Jorge
Bareche Sahún, Javier
Pareja Sánchez, Evangelina
Justes, Éric
Cantero-Martínez, Carlos
author_role author
author2 Álvaro-Fuentes, Jorge
Bareche Sahún, Javier
Pareja Sánchez, Evangelina
Justes, Éric
Cantero-Martínez, Carlos
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Emission factor
Mediterranean
N fertilization
Nitrous oxide
topic Emission factor
Mediterranean
N fertilization
Nitrous oxide
description There is a strong need to identify agricultural management practices that maintain agronomic productivity while diminishing soil N2O emissions. The yield-scaled N2O emissions (YSNE) indicator can help to evaluate the adequacy of a given agricultural practice under both aspects. Long-term (18-yr) soil water and mineral N dynamics, crop biomass and yields, and 2011-2012 soil N2O emissions and ancillary variables were measured on barley (Hordeum vulgare L.) production in a tillage (conventional tillage, CT; no-tillage, NT) and N rate (0, 60 and 120 kg N ha-1) combination under rainfed Mediterranean conditions (NE Spain). Once evaluated, the STICS soil-crop model was used to simulate the 18-yr soil N2O emissions of each tillage system under increasing N rates (0, 30, 60, 90 and 120 kg N ha-1) in order to identify optimum management to reduce YSNE, being initialized with observed data. Cropping season precipitation was highly variable during the experiment, being a key regulating mechanism for crop yields and simulated soil N2O emissions. Crop yield under NT with N outperformed CT in 11 years. STICS performed reasonably well when simulating cumulative N2O emissions and ancillary variables with model efficiencies greater than 0.5. The 18-yr average simulated cumulative N2O emissions were 0.50, 0.82 and 1.09 kg N2O-N ha-1 yr-1 for CT-0, CT-60 and CT-120, respectively, and they were 0.53, 0.92 and 1.19 kg N2O-N ha-1 yr-1 for their counterparts under NT. These averages mask a large variability between years, according to precipitation. The 18-yr mean yield-scaled N2O emissions were 2.8 to 3.3 times lower under NT, compared to the corresponding CT treatments. Under CT, N application would increase YSNE in most years while YSNE would be more resilient to the application of increasing N rates under NT. Our work demonstrates that in rainfed Mediterranean systems NT is a win-win strategy for the equilibrium between agricultural productivity and low soil N2O emissions.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1016/j.agee.2018.04.007
http://hdl.handle.net/10459.1/63411
url https://doi.org/10.1016/j.agee.2018.04.007
http://hdl.handle.net/10459.1/63411
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/MICINN//AGL2010-22050-C03-01
info:eu-repo/grantAgreement/MINECO//AGL2013-49062-C4-1-R
info:eu-repo/grantAgreement/MICINN//AGL2010-22050-C03-02
info:eu-repo/grantAgreement/MINECO//AGL2013-49062-C4-4-R
Versió postprint del document publicat a: https://doi.org/10.1016/j.agee.2018.04.007
Agriculture Ecosystems & Environment, 2018, vol. 262, p. 36-47
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Elsevier, 2018
info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
rights_invalid_str_mv cc-by-nc-nd (c) Elsevier, 2018
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositori Obert UdL
instname:Universitat de Lleida (UdL)
instname_str Universitat de Lleida (UdL)
reponame_str Repositori Obert UdL
collection Repositori Obert UdL
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