Water footprint in rainfed summer and winter crops: the role of soil moisture

Argentina is one of the main producers and exporters of grains and oilseeds, ranking third in soybean exports and fourth in barley ones. The 90% of this production occurs within the Argentine Pampas region (APR) under rainfed conditions, but its water consumption and pollution has not been studied i...

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Autores: Olivera Rodríguez, Paula, Holzman, Mauro Ezequiel, Martínez Aldaya, Maite, Rivas, Raúl Eduardo
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Recursos:Universidad Pública de Navarra
Repositorio:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
OAI Identifier:oai:academica-e.unavarra.es:2454/51475
Acesso em linha:https://hdl.handle.net/2454/51475
Access Level:acceso abierto
Palavra-chave:Evaporative fraction
Green water footprint
Grey water footprint
Leaching-runoff fraction
Nitrogen uptake
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spelling Water footprint in rainfed summer and winter crops: the role of soil moistureOlivera Rodríguez, PaulaHolzman, Mauro EzequielMartínez Aldaya, MaiteRivas, Raúl EduardoEvaporative fractionGreen water footprintGrey water footprintLeaching-runoff fractionNitrogen uptakeArgentina is one of the main producers and exporters of grains and oilseeds, ranking third in soybean exports and fourth in barley ones. The 90% of this production occurs within the Argentine Pampas region (APR) under rainfed conditions, but its water consumption and pollution has not been studied in depth. Likewise, the link between soil moisture (SM) and Water Footprint (WF) generation is poorly studied at the global level. And yet, SM is a critical factor for the development of rainfed crops. This study aims to evaluate, at plot scale, the role of SM in the generation of the green (WFgreen) and grey (WFgrey) (WF). Additionally, it estimates the WF for rainfed barley and soybean crops in the Southeast of APR, where there are no reference values. Yields, water consumption and nitrogen (N) pollution load were estimated for different campaigns. Field data (weather, crop and production management) recorded in the study plots were used. Results indicated an average WFgreen of 1236 m3/t for soybeans and a WFgreen of 349 m3/t and WFgrey of 547 m3/t for barley. The study highlights the critical role of SM in both WF sub-indicators. Soil water availability, based on the evaporative fraction during critical growth stages, influenced yields and final WFgreen volumes. In addition, there was an effect on N uptake by crops. In the driest barley campaign, WFgrey increased by 234%. Insufficient SM restricted nutrient uptake, reducing yields and increasing N with the potential to leach or runoff. Consequently, it is suggested to adjust the WFgrey methodology incorporating SM fluctuations and unaccounted N losses. The study contributes to understand the WF drivers and highlights the need to assess them accurately. In particular, it aims to reduce the gaps surrounding the water consumption of rainfed crops, thereby supporting resource conservation and grain provisioning efforts.This work was supported by the Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina, and the PICT 2019-0442.ElsevierCienciasZientziakInstitute on Innovation and Sustainable Development in Food Chain - ISFOOD2024info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2454/51475reponame:Academica-e. Repositorio Institucional de la Universidad Pública de Navarrainstname:Universidad Pública de NavarraInglés© 2024 The Authors. This is an open access article under the CC BY license.https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:academica-e.unavarra.es:2454/514752026-06-17T12:41:47Z
dc.title.none.fl_str_mv Water footprint in rainfed summer and winter crops: the role of soil moisture
title Water footprint in rainfed summer and winter crops: the role of soil moisture
spellingShingle Water footprint in rainfed summer and winter crops: the role of soil moisture
Olivera Rodríguez, Paula
Evaporative fraction
Green water footprint
Grey water footprint
Leaching-runoff fraction
Nitrogen uptake
title_short Water footprint in rainfed summer and winter crops: the role of soil moisture
title_full Water footprint in rainfed summer and winter crops: the role of soil moisture
title_fullStr Water footprint in rainfed summer and winter crops: the role of soil moisture
title_full_unstemmed Water footprint in rainfed summer and winter crops: the role of soil moisture
title_sort Water footprint in rainfed summer and winter crops: the role of soil moisture
dc.creator.none.fl_str_mv Olivera Rodríguez, Paula
Holzman, Mauro Ezequiel
Martínez Aldaya, Maite
Rivas, Raúl Eduardo
author Olivera Rodríguez, Paula
author_facet Olivera Rodríguez, Paula
Holzman, Mauro Ezequiel
Martínez Aldaya, Maite
Rivas, Raúl Eduardo
author_role author
author2 Holzman, Mauro Ezequiel
Martínez Aldaya, Maite
Rivas, Raúl Eduardo
author2_role author
author
author
dc.contributor.none.fl_str_mv Ciencias
Zientziak
Institute on Innovation and Sustainable Development in Food Chain - ISFOOD
dc.subject.none.fl_str_mv Evaporative fraction
Green water footprint
Grey water footprint
Leaching-runoff fraction
Nitrogen uptake
topic Evaporative fraction
Green water footprint
Grey water footprint
Leaching-runoff fraction
Nitrogen uptake
description Argentina is one of the main producers and exporters of grains and oilseeds, ranking third in soybean exports and fourth in barley ones. The 90% of this production occurs within the Argentine Pampas region (APR) under rainfed conditions, but its water consumption and pollution has not been studied in depth. Likewise, the link between soil moisture (SM) and Water Footprint (WF) generation is poorly studied at the global level. And yet, SM is a critical factor for the development of rainfed crops. This study aims to evaluate, at plot scale, the role of SM in the generation of the green (WFgreen) and grey (WFgrey) (WF). Additionally, it estimates the WF for rainfed barley and soybean crops in the Southeast of APR, where there are no reference values. Yields, water consumption and nitrogen (N) pollution load were estimated for different campaigns. Field data (weather, crop and production management) recorded in the study plots were used. Results indicated an average WFgreen of 1236 m3/t for soybeans and a WFgreen of 349 m3/t and WFgrey of 547 m3/t for barley. The study highlights the critical role of SM in both WF sub-indicators. Soil water availability, based on the evaporative fraction during critical growth stages, influenced yields and final WFgreen volumes. In addition, there was an effect on N uptake by crops. In the driest barley campaign, WFgrey increased by 234%. Insufficient SM restricted nutrient uptake, reducing yields and increasing N with the potential to leach or runoff. Consequently, it is suggested to adjust the WFgrey methodology incorporating SM fluctuations and unaccounted N losses. The study contributes to understand the WF drivers and highlights the need to assess them accurately. In particular, it aims to reduce the gaps surrounding the water consumption of rainfed crops, thereby supporting resource conservation and grain provisioning efforts.
publishDate 2024
dc.date.none.fl_str_mv 2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2454/51475
url https://hdl.handle.net/2454/51475
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv © 2024 The Authors. This is an open access article under the CC BY license.
https://creativecommons.org/licenses/by/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv © 2024 The Authors. This is an open access article under the CC BY license.
https://creativecommons.org/licenses/by/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:Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
instname:Universidad Pública de Navarra
instname_str Universidad Pública de Navarra
reponame_str Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
collection Academica-e. Repositorio Institucional de la Universidad Pública de Navarra
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.198674

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