Soil respiration response to reductions in maize plant density and increased row spacing (Southeast pampas, Argentina)

Autores
Lewczuk, Nuria; Picone, Liliana; Echarte, María Mercedes; Alfonso, Cecilia; Rizzalli, Roberto Héctor; Echarte, Laura
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Previous studies have recognized the influence of crop cover and agricultural management on variables (soil temperature, soil moisture, and root biomass) that influence soil respiration. However, despite the influence of plant density and row spacing on these variables in the maize crop (Zea mays L.), their impact on soil respiration has received little attention. Thus, the aims of this study were (i) to investigate whether reducing plant density and row spacing influences soil respiration, and (ii) to identify the controlling variables (soil temperature and soil moisture) underlying this response. We conducted field experiments in Balcarce, Argentina, over two seasons. Treatments included (i) maize crops at high plant density (≈8 plants m−2) and narrow rows (0.52 cm, HDN), and (ii) maize crops at low plant density (≈6.5 plants m−2) and wide row spacing (0.70 cm; LDW). Leaf area index (LAI), soil CO2 fluxes, soil superficial temperature, and moisture (characterized by the water-filled pore space, WFPS) were assessed throughout the growing season. Grain yield and cumulative soil CO2 emissions were determined at the final harvest. Major findings relevant to understanding the influence of reducing plant density and wider row spacing on instant CO2 fluxes include: (i) LAI reductions were related to higher superficial soil moisture, which was consistent at LAI ≥ 3; suggesting higher decreases in water uptake than increases in soil evaporation, and in turn (ii) increments in soil moisture were associated with higher CO2 fluxes. While lower plant density and wider row spacing had notable short-term effects on WFPS and soil respiration fluxes, they did not significantly affect cumulative soil respiration throughout the growing season. However, the combination of this practice with low-yield potential genotypes that exhibit low stability to changes in resource availability can increase CO2 emissions per unit of grain yield. These findings contribute to a better understanding of the impacts of management practices on soil respiration and, consequently, on carbon cycling within agricultural ecosystems.
EEA Balcarce
Fil: Lewczuk, Nuria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible; Argentina
Fil: Picone, Liliana. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
Fil: Echarte, Maria Mercedes. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible; Argentina
Fil: Alfonso, Cecilia. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
Fil: Rizzalli, Roberto Héctor. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
Fil: Echarte, Laura. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
Fil: Echarte, Laura. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible; Argentina
Fuente
Geoderma Regional 38 : e00828 (September 2024)
Materia
Manejo del Cultivo
Maíz
Respiración del Suelo
Porosidad del Suelo
Temperatura del Suelo
Argentina
Crop Management
Maize
Soil Respiration
Soil Porosity
Soil Temperature
Región Pampeana
Nivel de accesibilidad
acceso restringido
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
INTA Digital (INTA)
Institución
Instituto Nacional de Tecnología Agropecuaria
OAI Identificador
oai:localhost:20.500.12123/19666
Acceder
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oai_identifier_str oai:localhost:20.500.12123/19666
network_acronym_str INTADig
repository_id_str l
network_name_str INTA Digital (INTA)
spelling Soil respiration response to reductions in maize plant density and increased row spacing (Southeast pampas, Argentina)Lewczuk, NuriaPicone, LilianaEcharte, María MercedesAlfonso, CeciliaRizzalli, Roberto HéctorEcharte, LauraManejo del CultivoMaízRespiración del SueloPorosidad del SueloTemperatura del SueloArgentinaCrop ManagementMaizeSoil RespirationSoil PorositySoil TemperatureRegión PampeanaPrevious studies have recognized the influence of crop cover and agricultural management on variables (soil temperature, soil moisture, and root biomass) that influence soil respiration. However, despite the influence of plant density and row spacing on these variables in the maize crop (Zea mays L.), their impact on soil respiration has received little attention. Thus, the aims of this study were (i) to investigate whether reducing plant density and row spacing influences soil respiration, and (ii) to identify the controlling variables (soil temperature and soil moisture) underlying this response. We conducted field experiments in Balcarce, Argentina, over two seasons. Treatments included (i) maize crops at high plant density (≈8 plants m−2) and narrow rows (0.52 cm, HDN), and (ii) maize crops at low plant density (≈6.5 plants m−2) and wide row spacing (0.70 cm; LDW). Leaf area index (LAI), soil CO2 fluxes, soil superficial temperature, and moisture (characterized by the water-filled pore space, WFPS) were assessed throughout the growing season. Grain yield and cumulative soil CO2 emissions were determined at the final harvest. Major findings relevant to understanding the influence of reducing plant density and wider row spacing on instant CO2 fluxes include: (i) LAI reductions were related to higher superficial soil moisture, which was consistent at LAI ≥ 3; suggesting higher decreases in water uptake than increases in soil evaporation, and in turn (ii) increments in soil moisture were associated with higher CO2 fluxes. While lower plant density and wider row spacing had notable short-term effects on WFPS and soil respiration fluxes, they did not significantly affect cumulative soil respiration throughout the growing season. However, the combination of this practice with low-yield potential genotypes that exhibit low stability to changes in resource availability can increase CO2 emissions per unit of grain yield. These findings contribute to a better understanding of the impacts of management practices on soil respiration and, consequently, on carbon cycling within agricultural ecosystems.EEA BalcarceFil: Lewczuk, Nuria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible; ArgentinaFil: Picone, Liliana. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; ArgentinaFil: Echarte, Maria Mercedes. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible; ArgentinaFil: Alfonso, Cecilia. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; ArgentinaFil: Rizzalli, Roberto Héctor. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; ArgentinaFil: Echarte, Laura. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; ArgentinaFil: Echarte, Laura. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible; ArgentinaElsevier2024-10-04T09:59:53Z2024-10-04T09:59:53Z2024-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12123/19666https://www.sciencedirect.com/science/article/abs/pii/S23520094240007502352-0094https://doi.org/10.1016/j.geodrs.2024.e00828Geoderma Regional 38 : e00828 (September 2024)reponame:INTA Digital (INTA)instname:Instituto Nacional de Tecnología Agropecuariaenginfo:eu-repo/semantics/restrictedAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)2025-10-30T11:24:58Zoai:localhost:20.500.12123/19666instacron:INTAInstitucionalhttp://repositorio.inta.gob.ar/Organismo científico-tecnológicoNo correspondehttp://repositorio.inta.gob.ar/oai/requesttripaldi.nicolas@inta.gob.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:l2025-10-30 11:24:58.66INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuariafalse
dc.title.none.fl_str_mv Soil respiration response to reductions in maize plant density and increased row spacing (Southeast pampas, Argentina)
title Soil respiration response to reductions in maize plant density and increased row spacing (Southeast pampas, Argentina)
spellingShingle Soil respiration response to reductions in maize plant density and increased row spacing (Southeast pampas, Argentina)
Lewczuk, Nuria
Manejo del Cultivo
Maíz
Respiración del Suelo
Porosidad del Suelo
Temperatura del Suelo
Argentina
Crop Management
Maize
Soil Respiration
Soil Porosity
Soil Temperature
Región Pampeana
title_short Soil respiration response to reductions in maize plant density and increased row spacing (Southeast pampas, Argentina)
title_full Soil respiration response to reductions in maize plant density and increased row spacing (Southeast pampas, Argentina)
title_fullStr Soil respiration response to reductions in maize plant density and increased row spacing (Southeast pampas, Argentina)
title_full_unstemmed Soil respiration response to reductions in maize plant density and increased row spacing (Southeast pampas, Argentina)
title_sort Soil respiration response to reductions in maize plant density and increased row spacing (Southeast pampas, Argentina)
dc.creator.none.fl_str_mv Lewczuk, Nuria
Picone, Liliana
Echarte, María Mercedes
Alfonso, Cecilia
Rizzalli, Roberto Héctor
Echarte, Laura
author Lewczuk, Nuria
author_facet Lewczuk, Nuria
Picone, Liliana
Echarte, María Mercedes
Alfonso, Cecilia
Rizzalli, Roberto Héctor
Echarte, Laura
author_role author
author2 Picone, Liliana
Echarte, María Mercedes
Alfonso, Cecilia
Rizzalli, Roberto Héctor
Echarte, Laura
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Manejo del Cultivo
Maíz
Respiración del Suelo
Porosidad del Suelo
Temperatura del Suelo
Argentina
Crop Management
Maize
Soil Respiration
Soil Porosity
Soil Temperature
Región Pampeana
topic Manejo del Cultivo
Maíz
Respiración del Suelo
Porosidad del Suelo
Temperatura del Suelo
Argentina
Crop Management
Maize
Soil Respiration
Soil Porosity
Soil Temperature
Región Pampeana
dc.description.none.fl_txt_mv Previous studies have recognized the influence of crop cover and agricultural management on variables (soil temperature, soil moisture, and root biomass) that influence soil respiration. However, despite the influence of plant density and row spacing on these variables in the maize crop (Zea mays L.), their impact on soil respiration has received little attention. Thus, the aims of this study were (i) to investigate whether reducing plant density and row spacing influences soil respiration, and (ii) to identify the controlling variables (soil temperature and soil moisture) underlying this response. We conducted field experiments in Balcarce, Argentina, over two seasons. Treatments included (i) maize crops at high plant density (≈8 plants m−2) and narrow rows (0.52 cm, HDN), and (ii) maize crops at low plant density (≈6.5 plants m−2) and wide row spacing (0.70 cm; LDW). Leaf area index (LAI), soil CO2 fluxes, soil superficial temperature, and moisture (characterized by the water-filled pore space, WFPS) were assessed throughout the growing season. Grain yield and cumulative soil CO2 emissions were determined at the final harvest. Major findings relevant to understanding the influence of reducing plant density and wider row spacing on instant CO2 fluxes include: (i) LAI reductions were related to higher superficial soil moisture, which was consistent at LAI ≥ 3; suggesting higher decreases in water uptake than increases in soil evaporation, and in turn (ii) increments in soil moisture were associated with higher CO2 fluxes. While lower plant density and wider row spacing had notable short-term effects on WFPS and soil respiration fluxes, they did not significantly affect cumulative soil respiration throughout the growing season. However, the combination of this practice with low-yield potential genotypes that exhibit low stability to changes in resource availability can increase CO2 emissions per unit of grain yield. These findings contribute to a better understanding of the impacts of management practices on soil respiration and, consequently, on carbon cycling within agricultural ecosystems.
EEA Balcarce
Fil: Lewczuk, Nuria. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible; Argentina
Fil: Picone, Liliana. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
Fil: Echarte, Maria Mercedes. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible; Argentina
Fil: Alfonso, Cecilia. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
Fil: Rizzalli, Roberto Héctor. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
Fil: Echarte, Laura. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina
Fil: Echarte, Laura. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Innovación para la Producción Agropecuaria y el Desarrollo Sostenible; Argentina
description Previous studies have recognized the influence of crop cover and agricultural management on variables (soil temperature, soil moisture, and root biomass) that influence soil respiration. However, despite the influence of plant density and row spacing on these variables in the maize crop (Zea mays L.), their impact on soil respiration has received little attention. Thus, the aims of this study were (i) to investigate whether reducing plant density and row spacing influences soil respiration, and (ii) to identify the controlling variables (soil temperature and soil moisture) underlying this response. We conducted field experiments in Balcarce, Argentina, over two seasons. Treatments included (i) maize crops at high plant density (≈8 plants m−2) and narrow rows (0.52 cm, HDN), and (ii) maize crops at low plant density (≈6.5 plants m−2) and wide row spacing (0.70 cm; LDW). Leaf area index (LAI), soil CO2 fluxes, soil superficial temperature, and moisture (characterized by the water-filled pore space, WFPS) were assessed throughout the growing season. Grain yield and cumulative soil CO2 emissions were determined at the final harvest. Major findings relevant to understanding the influence of reducing plant density and wider row spacing on instant CO2 fluxes include: (i) LAI reductions were related to higher superficial soil moisture, which was consistent at LAI ≥ 3; suggesting higher decreases in water uptake than increases in soil evaporation, and in turn (ii) increments in soil moisture were associated with higher CO2 fluxes. While lower plant density and wider row spacing had notable short-term effects on WFPS and soil respiration fluxes, they did not significantly affect cumulative soil respiration throughout the growing season. However, the combination of this practice with low-yield potential genotypes that exhibit low stability to changes in resource availability can increase CO2 emissions per unit of grain yield. These findings contribute to a better understanding of the impacts of management practices on soil respiration and, consequently, on carbon cycling within agricultural ecosystems.
publishDate 2024
dc.date.none.fl_str_mv 2024-10-04T09:59:53Z
2024-10-04T09:59:53Z
2024-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12123/19666
https://www.sciencedirect.com/science/article/abs/pii/S2352009424000750
2352-0094
https://doi.org/10.1016/j.geodrs.2024.e00828
url http://hdl.handle.net/20.500.12123/19666
https://www.sciencedirect.com/science/article/abs/pii/S2352009424000750
https://doi.org/10.1016/j.geodrs.2024.e00828
identifier_str_mv 2352-0094
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/restrictedAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv restrictedAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
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 Geoderma Regional 38 : e00828 (September 2024)
reponame:INTA Digital (INTA)
instname:Instituto Nacional de Tecnología Agropecuaria
reponame_str INTA Digital (INTA)
collection INTA Digital (INTA)
instname_str Instituto Nacional de Tecnología Agropecuaria
repository.name.fl_str_mv INTA Digital (INTA) - Instituto Nacional de Tecnología Agropecuaria
repository.mail.fl_str_mv tripaldi.nicolas@inta.gob.ar
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score 13.121305

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