Assessing the efficiency of dimethylpyrazole-based nitrification inhibitors under elevated CO2 conditions

Bozal-Leorri, Adrián; González Murua, Carmen; Marino Bilbao, Daniel; Aparicio Tejo, Pedro María; Corrochano Monsalve, Mario

Publication:
Assessing the efficiency of dimethylpyrazole-based nitrification inhibitors under elevated CO2 conditions

dc.contributor.author	Bozal-Leorri, Adrián
dc.contributor.author	González Murua, Carmen
dc.contributor.author	Marino Bilbao, Daniel
dc.contributor.author	Aparicio Tejo, Pedro María
dc.contributor.author	Corrochano Monsalve, Mario
dc.contributor.department	Institute for Multidisciplinary Research in Applied Biology - IMAB	en
dc.date.accessioned	2022-01-12T11:12:21Z
dc.date.available	2022-01-12T11:12:21Z
dc.date.issued	2021
dc.description.abstract	Nitrification inhibitors (NIs) are useful tools to reduce nitrogen (N) losses derived from fertilization in agriculture. However, it remains unclear whether a future climate scenario with elevated CO2 could affect NIs efficiency. Thus, the objective of this work was to study whether the increase of atmospheric CO2 concentration would affect the efficiency of two dimethylpyrazole-based NIs: 3,4-dimethylpyrazol phosphate (DMPP) and 3,4-dimethylpyrazol succinic acid (DMPSA) in a plant-soil microcosm. To do so, Hordeum vulgare var. Henley plants were grown in soil fertilized with ammonium sulphate (AS) with or without NIs under controlled environmental conditions at ambient CO2 (aCO(2)) or elevated CO2 (eCO(2); 700 ppm). In the soil, mineral nitrogen and N2O emission evolution were monitored together with nitrifying and denitrifying population that were quantified by qPCR. In the plant, biomass, total amino acid content and isotopic discrimination of N and C were measured. Both NIs showed greater efficiency to maintain soil NH4+ content under eCO(2) compared to aCO(2), as a consequence of 80% reduction of AOB abundance in eCO(2). Indeed, both inhibitors were able to lessen 53% the N2O emissions in eCO(2) compared to aCO(2). Regarding the plant, DMPP and DMPSA negatively affected plant biomass at aCO(2) but this effect was restored at eCO(2) due to a better ammonium tolerance associated with an increase in total amino acid content. Overall, DMPP and DMPSA NIs were highly efficient under eCO(2), reducing N2O emissions and keeping N in the soil stable for longer while maintaining plant biomass production.	en
dc.description.sponsorship	This project was funded by the Spanish Government (RTI2018-094623-B-C21 MCIU/AEI/FEDER, UE) and by the Basque Government (IT-932-16). Adrian Bozal-Leorri holds a grant from the Basque Government. Mario Corrochano-Monsalve holds a grant from the Ministry of Economy and Business of the Spanish Government (BES-2016-076725).	en
dc.format.extent	10 p.
dc.format.mimetype	application/pdf	en
dc.identifier.doi	10.1016/j.geoderma.2021.115160
dc.identifier.issn	1872-6259
dc.identifier.uri	https://academica-e.unavarra.es/handle/2454/41716
dc.language.iso	eng	en
dc.publisher	Elsevier
dc.relation.ispartof	Geoderma, 400, 2021
dc.relation.projectID	info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-094623-B-C21/ES/	en
dc.relation.publisherversion	http://doi.org/10.1016/j.geoderma.2021.115160
dc.rights	© 2021 The Authors. Creative Commons Attribution 4.0 International	en
dc.rights.accessRights	info:eu-repo/semantics/openAccess
dc.rights.uri	http://creativecommons.org/licenses/by/4.0/
dc.subject	Climate change	en
dc.subject	Nitrous oxide	en
dc.subject	N fertilization	en
dc.subject	Nitrification	en
dc.subject	Denitrification	en
dc.subject	Elevated CO2	en
dc.title	Assessing the efficiency of dimethylpyrazole-based nitrification inhibitors under elevated CO2 conditions	en
dc.type	info:eu-repo/semantics/article
dc.type.version	info:eu-repo/semantics/publishedVersion	en
dc.type.version	Versión publicada / Argitaratu den bertsioa	es
dspace.entity.type	Publication
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