Acidification evidences of no-tilled soils of the central region of Argentina

Autores
Iturri, Laura Antonela; Buschiazzo, Daniel Eduardo; Díaz Zorita, Martín
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fil: Díaz Zorita, Martín. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.
Fil: Díaz Zorita, Martín. CONICET. Buenos Aires, Argentina.
Fil: Díaz Zorita, Martín. Merck Crop Bioscience Argentina S.A.
Empiric evidences indicate that agricultural soils of Argentina tend to acidify. The objective of this study was to determine the pH values of no-tilled and urea-fertilized-agricultural soils of Argentina during several years. Results indicated that both the actual pH (pHA) and the potential pH (pHP) values were lower in humid than in dry environments. The ratio between «mean annual precipitation:mean annual temperature» of the sites explained between 60 and 80 percent of the variability in pH values. This suggests that climatic conditions were responsible for current soil pH values. The pHA was 1.14 points higher tan pHP in all studied sites (p less than 0.01), indicating that a generalized natural acidification process existed. In soils of drier environments, differences between both pHA and pHP were, on average, higher than 1.21, indicating a more intense acidification process. However, pH values were not low enough to affect the normal growth of crops and soil organisms. In soils of humid environments, differences between pHA and pHP were higher than 1.10, being pHA values (6.17 and 5.80) acidic enough to affect the microbial activity and the development of pH sensitive crops. Fertilization with urea decreased pHA between 0.18 and 0.32 points compared to non-fertilized treatments (p less than 0.05), indicating that fertilization contributed to a decrease in pH values in the studied soils. In conclusion, fertilization with urea slightly increased the natural tendency to soil acidification in most of the studied soils.
Fuente
Ciencia del suelo : revista de la Asociación Argentina de la Ciencia del Suelo
Vol.29, no.1
13-19
http://www.suelos.org.ar/
Materia
NITROGEN FERTILIZERS
SOIL ACIDIFICATION
SOIL DEGRADATION
ACIDIFICATION
AGRICULTURAL SOIL
DEGRADATION
FERTILIZER APPLICATION
GROWTH RESPONSE
MICROBIAL ACTIVITY
NITROGEN
PH
SOIL CHEMISTRY
UREA
ARGENTINA
Nivel de accesibilidad
acceso abierto
Condiciones de uso
acceso abierto
Repositorio
FAUBA Digital (UBA-FAUBA)
Institución
Universidad de Buenos Aires. Facultad de Agronomía
OAI Identificador
snrd:2011Iturri

id FAUBA_d3e8e2c369c0d36ddd91ad16ff77d6e4
oai_identifier_str snrd:2011Iturri
network_acronym_str FAUBA
repository_id_str 2729
network_name_str FAUBA Digital (UBA-FAUBA)
spelling Acidification evidences of no-tilled soils of the central region of ArgentinaIturri, Laura AntonelaBuschiazzo, Daniel EduardoDíaz Zorita, MartínNITROGEN FERTILIZERSSOIL ACIDIFICATIONSOIL DEGRADATIONACIDIFICATIONAGRICULTURAL SOILDEGRADATIONFERTILIZER APPLICATIONGROWTH RESPONSEMICROBIAL ACTIVITYNITROGENPHSOIL CHEMISTRYUREAARGENTINAFil: Díaz Zorita, Martín. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.Fil: Díaz Zorita, Martín. CONICET. Buenos Aires, Argentina.Fil: Díaz Zorita, Martín. Merck Crop Bioscience Argentina S.A.Empiric evidences indicate that agricultural soils of Argentina tend to acidify. The objective of this study was to determine the pH values of no-tilled and urea-fertilized-agricultural soils of Argentina during several years. Results indicated that both the actual pH (pHA) and the potential pH (pHP) values were lower in humid than in dry environments. The ratio between «mean annual precipitation:mean annual temperature» of the sites explained between 60 and 80 percent of the variability in pH values. This suggests that climatic conditions were responsible for current soil pH values. The pHA was 1.14 points higher tan pHP in all studied sites (p less than 0.01), indicating that a generalized natural acidification process existed. In soils of drier environments, differences between both pHA and pHP were, on average, higher than 1.21, indicating a more intense acidification process. However, pH values were not low enough to affect the normal growth of crops and soil organisms. In soils of humid environments, differences between pHA and pHP were higher than 1.10, being pHA values (6.17 and 5.80) acidic enough to affect the microbial activity and the development of pH sensitive crops. Fertilization with urea decreased pHA between 0.18 and 0.32 points compared to non-fertilized treatments (p less than 0.05), indicating that fertilization contributed to a decrease in pH values in the studied soils. In conclusion, fertilization with urea slightly increased the natural tendency to soil acidification in most of the studied soils.2011articleinfo:eu-repo/semantics/articlepublishedVersioninfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfissn:0326-3169http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2011IturriCiencia del suelo : revista de la Asociación Argentina de la Ciencia del SueloVol.29, no.113-19http://www.suelos.org.ar/reponame:FAUBA Digital (UBA-FAUBA)instname:Universidad de Buenos Aires. Facultad de AgronomíaengARGinfo:eu-repo/semantics/openAccessopenAccesshttp://ri.agro.uba.ar/greenstone3/library/page/biblioteca#section42025-09-29T13:41:00Zsnrd:2011Iturriinstacron:UBA-FAUBAInstitucionalhttp://ri.agro.uba.ar/Universidad públicaNo correspondehttp://ri.agro.uba.ar/greenstone3/oaiserver?verb=ListSetsmartino@agro.uba.ar;berasa@agro.uba.ar ArgentinaNo correspondeNo correspondeNo correspondeopendoar:27292025-09-29 13:41:01.024FAUBA Digital (UBA-FAUBA) - Universidad de Buenos Aires. Facultad de Agronomíafalse
dc.title.none.fl_str_mv Acidification evidences of no-tilled soils of the central region of Argentina
title Acidification evidences of no-tilled soils of the central region of Argentina
spellingShingle Acidification evidences of no-tilled soils of the central region of Argentina
Iturri, Laura Antonela
NITROGEN FERTILIZERS
SOIL ACIDIFICATION
SOIL DEGRADATION
ACIDIFICATION
AGRICULTURAL SOIL
DEGRADATION
FERTILIZER APPLICATION
GROWTH RESPONSE
MICROBIAL ACTIVITY
NITROGEN
PH
SOIL CHEMISTRY
UREA
ARGENTINA
title_short Acidification evidences of no-tilled soils of the central region of Argentina
title_full Acidification evidences of no-tilled soils of the central region of Argentina
title_fullStr Acidification evidences of no-tilled soils of the central region of Argentina
title_full_unstemmed Acidification evidences of no-tilled soils of the central region of Argentina
title_sort Acidification evidences of no-tilled soils of the central region of Argentina
dc.creator.none.fl_str_mv Iturri, Laura Antonela
Buschiazzo, Daniel Eduardo
Díaz Zorita, Martín
author Iturri, Laura Antonela
author_facet Iturri, Laura Antonela
Buschiazzo, Daniel Eduardo
Díaz Zorita, Martín
author_role author
author2 Buschiazzo, Daniel Eduardo
Díaz Zorita, Martín
author2_role author
author
dc.subject.none.fl_str_mv NITROGEN FERTILIZERS
SOIL ACIDIFICATION
SOIL DEGRADATION
ACIDIFICATION
AGRICULTURAL SOIL
DEGRADATION
FERTILIZER APPLICATION
GROWTH RESPONSE
MICROBIAL ACTIVITY
NITROGEN
PH
SOIL CHEMISTRY
UREA
ARGENTINA
topic NITROGEN FERTILIZERS
SOIL ACIDIFICATION
SOIL DEGRADATION
ACIDIFICATION
AGRICULTURAL SOIL
DEGRADATION
FERTILIZER APPLICATION
GROWTH RESPONSE
MICROBIAL ACTIVITY
NITROGEN
PH
SOIL CHEMISTRY
UREA
ARGENTINA
dc.description.none.fl_txt_mv Fil: Díaz Zorita, Martín. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.
Fil: Díaz Zorita, Martín. CONICET. Buenos Aires, Argentina.
Fil: Díaz Zorita, Martín. Merck Crop Bioscience Argentina S.A.
Empiric evidences indicate that agricultural soils of Argentina tend to acidify. The objective of this study was to determine the pH values of no-tilled and urea-fertilized-agricultural soils of Argentina during several years. Results indicated that both the actual pH (pHA) and the potential pH (pHP) values were lower in humid than in dry environments. The ratio between «mean annual precipitation:mean annual temperature» of the sites explained between 60 and 80 percent of the variability in pH values. This suggests that climatic conditions were responsible for current soil pH values. The pHA was 1.14 points higher tan pHP in all studied sites (p less than 0.01), indicating that a generalized natural acidification process existed. In soils of drier environments, differences between both pHA and pHP were, on average, higher than 1.21, indicating a more intense acidification process. However, pH values were not low enough to affect the normal growth of crops and soil organisms. In soils of humid environments, differences between pHA and pHP were higher than 1.10, being pHA values (6.17 and 5.80) acidic enough to affect the microbial activity and the development of pH sensitive crops. Fertilization with urea decreased pHA between 0.18 and 0.32 points compared to non-fertilized treatments (p less than 0.05), indicating that fertilization contributed to a decrease in pH values in the studied soils. In conclusion, fertilization with urea slightly increased the natural tendency to soil acidification in most of the studied soils.
description Fil: Díaz Zorita, Martín. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.
publishDate 2011
dc.date.none.fl_str_mv 2011
dc.type.none.fl_str_mv article
info:eu-repo/semantics/article
publishedVersion
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 issn:0326-3169
http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2011Iturri
identifier_str_mv issn:0326-3169
url http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2011Iturri
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
openAccess
http://ri.agro.uba.ar/greenstone3/library/page/biblioteca#section4
eu_rights_str_mv openAccess
rights_invalid_str_mv openAccess
http://ri.agro.uba.ar/greenstone3/library/page/biblioteca#section4
dc.format.none.fl_str_mv application/pdf
dc.coverage.none.fl_str_mv ARG
dc.source.none.fl_str_mv Ciencia del suelo : revista de la Asociación Argentina de la Ciencia del Suelo
Vol.29, no.1
13-19
http://www.suelos.org.ar/
reponame:FAUBA Digital (UBA-FAUBA)
instname:Universidad de Buenos Aires. Facultad de Agronomía
reponame_str FAUBA Digital (UBA-FAUBA)
collection FAUBA Digital (UBA-FAUBA)
instname_str Universidad de Buenos Aires. Facultad de Agronomía
repository.name.fl_str_mv FAUBA Digital (UBA-FAUBA) - Universidad de Buenos Aires. Facultad de Agronomía
repository.mail.fl_str_mv martino@agro.uba.ar;berasa@agro.uba.ar
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score 13.070432