Planosol soil sample size for computerized tomography measurement of physical parameters

Detalhes bibliográficos
Autor(a) principal: Pedrotti,Alceu
Data de Publicação: 2003
Outros Autores: Pauletto,Eloy Antonio, Crestana,Silvio, Cruvinel,Paulo Estevão, Vaz,Carlos Manoel Pedro, Naime,João de Mendonça, Silva,Alvaro Macedo da
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Scientia Agrícola (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400019
Resumo: Computerized tomography (CT) is an important tool in Soil Science for noninvasive measurement of density and water content of soil samples. This work aims to describe the aspects of sample size adequacy for Planosol (Albaqualf) and to evaluate procedures for statistical analysis, using a CT scanner with a 241Am source. Density errors attributed to the equipment are 0.051 and 0.046 Mg m-3 for horizons A and B, respectively. The theoretical value for sample thickness for the Planosol, using this equipment, is 4.0 cm for the horizons A and B. The ideal thickness of samples is approximately 6.0 cm, being smaller for samples of the horizon B in relation to A. Alternatives for the improvement of the efficiency analysis and the reliability of the results obtained by CT are also discussed, and indicate good precision and adaptability of the application of this technology in Planosol (Albaqualf) studies.
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spelling Planosol soil sample size for computerized tomography measurement of physical parameterslowlandalbaqualfbulk densitycompactionsoil moistureComputerized tomography (CT) is an important tool in Soil Science for noninvasive measurement of density and water content of soil samples. This work aims to describe the aspects of sample size adequacy for Planosol (Albaqualf) and to evaluate procedures for statistical analysis, using a CT scanner with a 241Am source. Density errors attributed to the equipment are 0.051 and 0.046 Mg m-3 for horizons A and B, respectively. The theoretical value for sample thickness for the Planosol, using this equipment, is 4.0 cm for the horizons A and B. The ideal thickness of samples is approximately 6.0 cm, being smaller for samples of the horizon B in relation to A. Alternatives for the improvement of the efficiency analysis and the reliability of the results obtained by CT are also discussed, and indicate good precision and adaptability of the application of this technology in Planosol (Albaqualf) studies.Escola Superior de Agricultura "Luiz de Queiroz"2003-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400019Scientia Agricola v.60 n.4 2003reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USP10.1590/S0103-90162003000400019info:eu-repo/semantics/openAccessPedrotti,AlceuPauletto,Eloy AntonioCrestana,SilvioCruvinel,Paulo EstevãoVaz,Carlos Manoel PedroNaime,João de MendonçaSilva,Alvaro Macedo daeng2003-10-24T00:00:00Zoai:scielo:S0103-90162003000400019Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2003-10-24T00:00Scientia Agrícola (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Planosol soil sample size for computerized tomography measurement of physical parameters
title Planosol soil sample size for computerized tomography measurement of physical parameters
spellingShingle Planosol soil sample size for computerized tomography measurement of physical parameters
Pedrotti,Alceu
lowland
albaqualf
bulk density
compaction
soil moisture
title_short Planosol soil sample size for computerized tomography measurement of physical parameters
title_full Planosol soil sample size for computerized tomography measurement of physical parameters
title_fullStr Planosol soil sample size for computerized tomography measurement of physical parameters
title_full_unstemmed Planosol soil sample size for computerized tomography measurement of physical parameters
title_sort Planosol soil sample size for computerized tomography measurement of physical parameters
author Pedrotti,Alceu
author_facet Pedrotti,Alceu
Pauletto,Eloy Antonio
Crestana,Silvio
Cruvinel,Paulo Estevão
Vaz,Carlos Manoel Pedro
Naime,João de Mendonça
Silva,Alvaro Macedo da
author_role author
author2 Pauletto,Eloy Antonio
Crestana,Silvio
Cruvinel,Paulo Estevão
Vaz,Carlos Manoel Pedro
Naime,João de Mendonça
Silva,Alvaro Macedo da
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Pedrotti,Alceu
Pauletto,Eloy Antonio
Crestana,Silvio
Cruvinel,Paulo Estevão
Vaz,Carlos Manoel Pedro
Naime,João de Mendonça
Silva,Alvaro Macedo da
dc.subject.por.fl_str_mv lowland
albaqualf
bulk density
compaction
soil moisture
topic lowland
albaqualf
bulk density
compaction
soil moisture
description Computerized tomography (CT) is an important tool in Soil Science for noninvasive measurement of density and water content of soil samples. This work aims to describe the aspects of sample size adequacy for Planosol (Albaqualf) and to evaluate procedures for statistical analysis, using a CT scanner with a 241Am source. Density errors attributed to the equipment are 0.051 and 0.046 Mg m-3 for horizons A and B, respectively. The theoretical value for sample thickness for the Planosol, using this equipment, is 4.0 cm for the horizons A and B. The ideal thickness of samples is approximately 6.0 cm, being smaller for samples of the horizon B in relation to A. Alternatives for the improvement of the efficiency analysis and the reliability of the results obtained by CT are also discussed, and indicate good precision and adaptability of the application of this technology in Planosol (Albaqualf) studies.
publishDate 2003
dc.date.none.fl_str_mv 2003-12-01
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=S0103-90162003000400019
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400019
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-90162003000400019
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.60 n.4 2003
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
_version_ 1748936459196301312

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