Nitrogen fertilizer leaching in an Oxisol cultivated with sugarcane

Detalhes bibliográficos
Autor(a) principal: Ghiberto,Pablo Javier
Data de Publicação: 2011
Outros Autores: Libardi,Paulo Leonel, Brito,Alexsandro dos Santos, Trivelin,Paulo Cezar Ocheuze
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Scientia Agrícola (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000100013
Resumo: Nitrogen (N) leaching below the crop-rooting zone represents not only a valuable loss of nutrients for the plant, but also a potential pollution source of groundwater. The objective of this work was to quantify leaching losses of native N and that derived from fertilizer in an Oxisol that was cultivated with sugarcane (Saccharum officinarum) during the crop plant cycle. The sugarcane was planted and fertilized with urea in the planting furrow, with 120 kg ha-1 of N. In order to determine the fate of the fertilizer - N, four microplots with 15N enriched fertilizer were installed. Input and output of N at the depth of 0.9 m were quantified from the flux density of water and the N concentration in soil solution. During the evaluation period the rainfall was 141 mm less than the historical average (1,315 mm), and the climate was drier than normal in January. The average concentration of mineral N in soil solution was 1.8 mg L-1. The abundance of 15N was very high at the beginning (first week) of the assessment period and remained approximately constant (0.453 atom% of 15N) until the end of the period. The internal drainage was 91 mm of water and the N leaching loss was 1.1 kg ha-1 of N, with only 54 g ha-1 derived from fertilizer. Therefore, under high demand of N by the crop in a system without burning before planting, the leaching of N was not considerable, mainly because the surplus of water between the months of December and March was lower than expected and also because the extraction of nitrogen by the crop was high.
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spelling Nitrogen fertilizer leaching in an Oxisol cultivated with sugarcaneSaccharum sppsustainabilitysolute transportenvironmental qualitypollutionNitrogen (N) leaching below the crop-rooting zone represents not only a valuable loss of nutrients for the plant, but also a potential pollution source of groundwater. The objective of this work was to quantify leaching losses of native N and that derived from fertilizer in an Oxisol that was cultivated with sugarcane (Saccharum officinarum) during the crop plant cycle. The sugarcane was planted and fertilized with urea in the planting furrow, with 120 kg ha-1 of N. In order to determine the fate of the fertilizer - N, four microplots with 15N enriched fertilizer were installed. Input and output of N at the depth of 0.9 m were quantified from the flux density of water and the N concentration in soil solution. During the evaluation period the rainfall was 141 mm less than the historical average (1,315 mm), and the climate was drier than normal in January. The average concentration of mineral N in soil solution was 1.8 mg L-1. The abundance of 15N was very high at the beginning (first week) of the assessment period and remained approximately constant (0.453 atom% of 15N) until the end of the period. The internal drainage was 91 mm of water and the N leaching loss was 1.1 kg ha-1 of N, with only 54 g ha-1 derived from fertilizer. Therefore, under high demand of N by the crop in a system without burning before planting, the leaching of N was not considerable, mainly because the surplus of water between the months of December and March was lower than expected and also because the extraction of nitrogen by the crop was high.Escola Superior de Agricultura "Luiz de Queiroz"2011-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000100013Scientia Agricola v.68 n.1 2011reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0103-90162011000100013info:eu-repo/semantics/openAccessGhiberto,Pablo JavierLibardi,Paulo LeonelBrito,Alexsandro dos SantosTrivelin,Paulo Cezar Ocheuzeeng2011-01-13T00:00:00Zoai:scielo:S0103-90162011000100013Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2011-01-13T00:00Scientia Agrícola (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Nitrogen fertilizer leaching in an Oxisol cultivated with sugarcane
title Nitrogen fertilizer leaching in an Oxisol cultivated with sugarcane
spellingShingle Nitrogen fertilizer leaching in an Oxisol cultivated with sugarcane
Ghiberto,Pablo Javier
Saccharum spp
sustainability
solute transport
environmental quality
pollution
title_short Nitrogen fertilizer leaching in an Oxisol cultivated with sugarcane
title_full Nitrogen fertilizer leaching in an Oxisol cultivated with sugarcane
title_fullStr Nitrogen fertilizer leaching in an Oxisol cultivated with sugarcane
title_full_unstemmed Nitrogen fertilizer leaching in an Oxisol cultivated with sugarcane
title_sort Nitrogen fertilizer leaching in an Oxisol cultivated with sugarcane
author Ghiberto,Pablo Javier
author_facet Ghiberto,Pablo Javier
Libardi,Paulo Leonel
Brito,Alexsandro dos Santos
Trivelin,Paulo Cezar Ocheuze
author_role author
author2 Libardi,Paulo Leonel
Brito,Alexsandro dos Santos
Trivelin,Paulo Cezar Ocheuze
author2_role author
author
author
dc.contributor.author.fl_str_mv Ghiberto,Pablo Javier
Libardi,Paulo Leonel
Brito,Alexsandro dos Santos
Trivelin,Paulo Cezar Ocheuze
dc.subject.por.fl_str_mv Saccharum spp
sustainability
solute transport
environmental quality
pollution
topic Saccharum spp
sustainability
solute transport
environmental quality
pollution
description Nitrogen (N) leaching below the crop-rooting zone represents not only a valuable loss of nutrients for the plant, but also a potential pollution source of groundwater. The objective of this work was to quantify leaching losses of native N and that derived from fertilizer in an Oxisol that was cultivated with sugarcane (Saccharum officinarum) during the crop plant cycle. The sugarcane was planted and fertilized with urea in the planting furrow, with 120 kg ha-1 of N. In order to determine the fate of the fertilizer - N, four microplots with 15N enriched fertilizer were installed. Input and output of N at the depth of 0.9 m were quantified from the flux density of water and the N concentration in soil solution. During the evaluation period the rainfall was 141 mm less than the historical average (1,315 mm), and the climate was drier than normal in January. The average concentration of mineral N in soil solution was 1.8 mg L-1. The abundance of 15N was very high at the beginning (first week) of the assessment period and remained approximately constant (0.453 atom% of 15N) until the end of the period. The internal drainage was 91 mm of water and the N leaching loss was 1.1 kg ha-1 of N, with only 54 g ha-1 derived from fertilizer. Therefore, under high demand of N by the crop in a system without burning before planting, the leaching of N was not considerable, mainly because the surplus of water between the months of December and March was lower than expected and also because the extraction of nitrogen by the crop was high.
publishDate 2011
dc.date.none.fl_str_mv 2011-02-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000100013
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000100013
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-90162011000100013
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Escola Superior de Agricultura "Luiz de Queiroz"
publisher.none.fl_str_mv Escola Superior de Agricultura "Luiz de Queiroz"
dc.source.none.fl_str_mv Scientia Agricola v.68 n.1 2011
reponame:Scientia Agrícola (Online)
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Scientia Agrícola (Online)
collection Scientia Agrícola (Online)
repository.name.fl_str_mv Scientia Agrícola (Online) - Universidade de São Paulo (USP)
repository.mail.fl_str_mv scientia@usp.br||alleoni@usp.br
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