Effect of wheat crop fertilization on nitrogen dynamics and balance in the Humid Pampas, Argentina

Autores
Abril, Adriana; Baleani, D.; Casado Murillo, N.; Noe, Laura Belén
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Water contamination by nitrates has increased international awareness. It is widely accepted that massive fertilizer application is the principal factor responsible for water nitrate contamination. During the last years, Argentina has extraordinarily increased the use of fertilizers, particularly on wheat (Triticum aestivum L.). However, few studies have quantified nitrate losses. Here we report N dynamics in soil fractions and N balance in wheat crops in Marcos Juarez, province of Córdoba (Argentina) with the aim of determining nitrate loss and its possible influence on water contamination. Four treatments were studied to evaluate the combined effect of tillage systems and N fertilizer doses on N losses in soil 0-20 cm in depth. The treatments analyzed were: (a) conventional tillage, non-fertilized (CT 0N), (b) no-till and 25 kg N ha-1 (NT 25N), (c) no-till and 50 kg N ha-1 (NT 50N), and (d) no-till and 140 kg N ha-1 (NT 140N). Determinations were: soil total N, NO3--N, NH4+-N, microbial biomass N, crop residue biomass, crop residue N, and grain N. N balance was calculated as the difference in N fractions between harvest and sowing samples. N balance was negative in all treatments evaluated; the highest N loss (-1075 kg N ha-1) occurred with the highest fertilization rate (140 kg N ha-1). Losses of microbial and soluble N fractions were significant at the end of the crop cycle in all the treatments analyzed (15 and 40%, respectively), probably due to leaching by high precipitations (250 mm). Much of the N lost was soil organic matter N, a fact seldom considered in other N balances. Furthermore, it was observed that neither yield efficiency nor the remaining N increased significantly with the highest fertilization dose (140N). Our data show that high doses of nitrogen fertilizer result in low N utilization efficiency and a high risk of water contamination by nitrates.
Fil: Abril, Adriana. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Recursos Naturales. Cátedra de Microbiología Agrícola; Argentina
Fil: Baleani, D.. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Recursos Naturales. Cátedra de Microbiología Agrícola; Argentina
Fil: Casado Murillo, N.. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Recursos Naturales. Cátedra de Microbiología Agrícola; Argentina
Fil: Noe, Laura Belén. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Recursos Naturales. Cátedra de Microbiología Agrícola; Argentina
Materia
Fertilization Efficiency
Leaching
Microbial Biomass N
Nitrate
Water Contamination
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/80783
Acceder
id CONICETDig_736a39f487111cf138d210d481699e4c
oai_identifier_str oai:ri.conicet.gov.ar:11336/80783
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Effect of wheat crop fertilization on nitrogen dynamics and balance in the Humid Pampas, ArgentinaAbril, AdrianaBaleani, D.Casado Murillo, N.Noe, Laura BelénFertilization EfficiencyLeachingMicrobial Biomass NNitrateWater Contaminationhttps://purl.org/becyt/ford/4.1https://purl.org/becyt/ford/4Water contamination by nitrates has increased international awareness. It is widely accepted that massive fertilizer application is the principal factor responsible for water nitrate contamination. During the last years, Argentina has extraordinarily increased the use of fertilizers, particularly on wheat (Triticum aestivum L.). However, few studies have quantified nitrate losses. Here we report N dynamics in soil fractions and N balance in wheat crops in Marcos Juarez, province of Córdoba (Argentina) with the aim of determining nitrate loss and its possible influence on water contamination. Four treatments were studied to evaluate the combined effect of tillage systems and N fertilizer doses on N losses in soil 0-20 cm in depth. The treatments analyzed were: (a) conventional tillage, non-fertilized (CT 0N), (b) no-till and 25 kg N ha-1 (NT 25N), (c) no-till and 50 kg N ha-1 (NT 50N), and (d) no-till and 140 kg N ha-1 (NT 140N). Determinations were: soil total N, NO3--N, NH4+-N, microbial biomass N, crop residue biomass, crop residue N, and grain N. N balance was calculated as the difference in N fractions between harvest and sowing samples. N balance was negative in all treatments evaluated; the highest N loss (-1075 kg N ha-1) occurred with the highest fertilization rate (140 kg N ha-1). Losses of microbial and soluble N fractions were significant at the end of the crop cycle in all the treatments analyzed (15 and 40%, respectively), probably due to leaching by high precipitations (250 mm). Much of the N lost was soil organic matter N, a fact seldom considered in other N balances. Furthermore, it was observed that neither yield efficiency nor the remaining N increased significantly with the highest fertilization dose (140N). Our data show that high doses of nitrogen fertilizer result in low N utilization efficiency and a high risk of water contamination by nitrates.Fil: Abril, Adriana. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Recursos Naturales. Cátedra de Microbiología Agrícola; ArgentinaFil: Baleani, D.. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Recursos Naturales. Cátedra de Microbiología Agrícola; ArgentinaFil: Casado Murillo, N.. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Recursos Naturales. Cátedra de Microbiología Agrícola; ArgentinaFil: Noe, Laura Belén. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Recursos Naturales. Cátedra de Microbiología Agrícola; ArgentinaElsevier Science2007-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/80783Abril, Adriana; Baleani, D.; Casado Murillo, N.; Noe, Laura Belén; Effect of wheat crop fertilization on nitrogen dynamics and balance in the Humid Pampas, Argentina; Elsevier Science; Agriculture, Ecosystems and Environment; 119; 1-2; 2-2007; 171-1760167-8809CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S016788090600274Xinfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.agee.2006.07.005info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:22:48Zoai:ri.conicet.gov.ar:11336/80783instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:22:48.36CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effect of wheat crop fertilization on nitrogen dynamics and balance in the Humid Pampas, Argentina
title Effect of wheat crop fertilization on nitrogen dynamics and balance in the Humid Pampas, Argentina
spellingShingle Effect of wheat crop fertilization on nitrogen dynamics and balance in the Humid Pampas, Argentina
Abril, Adriana
Fertilization Efficiency
Leaching
Microbial Biomass N
Nitrate
Water Contamination
title_short Effect of wheat crop fertilization on nitrogen dynamics and balance in the Humid Pampas, Argentina
title_full Effect of wheat crop fertilization on nitrogen dynamics and balance in the Humid Pampas, Argentina
title_fullStr Effect of wheat crop fertilization on nitrogen dynamics and balance in the Humid Pampas, Argentina
title_full_unstemmed Effect of wheat crop fertilization on nitrogen dynamics and balance in the Humid Pampas, Argentina
title_sort Effect of wheat crop fertilization on nitrogen dynamics and balance in the Humid Pampas, Argentina
dc.creator.none.fl_str_mv Abril, Adriana
Baleani, D.
Casado Murillo, N.
Noe, Laura Belén
author Abril, Adriana
author_facet Abril, Adriana
Baleani, D.
Casado Murillo, N.
Noe, Laura Belén
author_role author
author2 Baleani, D.
Casado Murillo, N.
Noe, Laura Belén
author2_role author
author
author
dc.subject.none.fl_str_mv Fertilization Efficiency
Leaching
Microbial Biomass N
Nitrate
Water Contamination
topic Fertilization Efficiency
Leaching
Microbial Biomass N
Nitrate
Water Contamination
purl_subject.fl_str_mv https://purl.org/becyt/ford/4.1
https://purl.org/becyt/ford/4
dc.description.none.fl_txt_mv Water contamination by nitrates has increased international awareness. It is widely accepted that massive fertilizer application is the principal factor responsible for water nitrate contamination. During the last years, Argentina has extraordinarily increased the use of fertilizers, particularly on wheat (Triticum aestivum L.). However, few studies have quantified nitrate losses. Here we report N dynamics in soil fractions and N balance in wheat crops in Marcos Juarez, province of Córdoba (Argentina) with the aim of determining nitrate loss and its possible influence on water contamination. Four treatments were studied to evaluate the combined effect of tillage systems and N fertilizer doses on N losses in soil 0-20 cm in depth. The treatments analyzed were: (a) conventional tillage, non-fertilized (CT 0N), (b) no-till and 25 kg N ha-1 (NT 25N), (c) no-till and 50 kg N ha-1 (NT 50N), and (d) no-till and 140 kg N ha-1 (NT 140N). Determinations were: soil total N, NO3--N, NH4+-N, microbial biomass N, crop residue biomass, crop residue N, and grain N. N balance was calculated as the difference in N fractions between harvest and sowing samples. N balance was negative in all treatments evaluated; the highest N loss (-1075 kg N ha-1) occurred with the highest fertilization rate (140 kg N ha-1). Losses of microbial and soluble N fractions were significant at the end of the crop cycle in all the treatments analyzed (15 and 40%, respectively), probably due to leaching by high precipitations (250 mm). Much of the N lost was soil organic matter N, a fact seldom considered in other N balances. Furthermore, it was observed that neither yield efficiency nor the remaining N increased significantly with the highest fertilization dose (140N). Our data show that high doses of nitrogen fertilizer result in low N utilization efficiency and a high risk of water contamination by nitrates.
Fil: Abril, Adriana. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Recursos Naturales. Cátedra de Microbiología Agrícola; Argentina
Fil: Baleani, D.. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Recursos Naturales. Cátedra de Microbiología Agrícola; Argentina
Fil: Casado Murillo, N.. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Recursos Naturales. Cátedra de Microbiología Agrícola; Argentina
Fil: Noe, Laura Belén. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Córdoba. Facultad de Ciencias Agropecuarias. Departamento de Recursos Naturales. Cátedra de Microbiología Agrícola; Argentina
description Water contamination by nitrates has increased international awareness. It is widely accepted that massive fertilizer application is the principal factor responsible for water nitrate contamination. During the last years, Argentina has extraordinarily increased the use of fertilizers, particularly on wheat (Triticum aestivum L.). However, few studies have quantified nitrate losses. Here we report N dynamics in soil fractions and N balance in wheat crops in Marcos Juarez, province of Córdoba (Argentina) with the aim of determining nitrate loss and its possible influence on water contamination. Four treatments were studied to evaluate the combined effect of tillage systems and N fertilizer doses on N losses in soil 0-20 cm in depth. The treatments analyzed were: (a) conventional tillage, non-fertilized (CT 0N), (b) no-till and 25 kg N ha-1 (NT 25N), (c) no-till and 50 kg N ha-1 (NT 50N), and (d) no-till and 140 kg N ha-1 (NT 140N). Determinations were: soil total N, NO3--N, NH4+-N, microbial biomass N, crop residue biomass, crop residue N, and grain N. N balance was calculated as the difference in N fractions between harvest and sowing samples. N balance was negative in all treatments evaluated; the highest N loss (-1075 kg N ha-1) occurred with the highest fertilization rate (140 kg N ha-1). Losses of microbial and soluble N fractions were significant at the end of the crop cycle in all the treatments analyzed (15 and 40%, respectively), probably due to leaching by high precipitations (250 mm). Much of the N lost was soil organic matter N, a fact seldom considered in other N balances. Furthermore, it was observed that neither yield efficiency nor the remaining N increased significantly with the highest fertilization dose (140N). Our data show that high doses of nitrogen fertilizer result in low N utilization efficiency and a high risk of water contamination by nitrates.
publishDate 2007
dc.date.none.fl_str_mv 2007-02
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/11336/80783
Abril, Adriana; Baleani, D.; Casado Murillo, N.; Noe, Laura Belén; Effect of wheat crop fertilization on nitrogen dynamics and balance in the Humid Pampas, Argentina; Elsevier Science; Agriculture, Ecosystems and Environment; 119; 1-2; 2-2007; 171-176
0167-8809
CONICET Digital
CONICET
url http://hdl.handle.net/11336/80783
identifier_str_mv Abril, Adriana; Baleani, D.; Casado Murillo, N.; Noe, Laura Belén; Effect of wheat crop fertilization on nitrogen dynamics and balance in the Humid Pampas, Argentina; Elsevier Science; Agriculture, Ecosystems and Environment; 119; 1-2; 2-2007; 171-176
0167-8809
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S016788090600274X
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.agee.2006.07.005
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846083374878294016
score 13.22299

Publicaciones similares