Spatial variability of pores in oxidic latosol under a conservation management system with different gypsium doses

Detalhes bibliográficos
Autor(a) principal: Carducci,Carla Eloize
Data de Publicação: 2014
Outros Autores: Oliveira,Geraldo César, Curi,Nilton, Rossoni,Diogo Francisco, Costa,Alisson Lucrécio, Heck,Richard Jonh
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Ciência e Agrotecnologia (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000500004
Resumo: Soil structure is modify when subjected to the agricultural process, i.e., a new spatial organization of the pores system is formed, with relation to the physical quality of it. Thus the aim of this work was to visualize and quantify, through X-ray CT scan, the pores distribution in an oxidic Latosol submitted to a conservation management system with different gypsum doses. Three random trenches were dug lengthwise along the plant row in a very clayey gibbsitic dystrophic Red Latosol, subjected to the following gypsum levels: G0: absence of gypsum; G7: 7 Mg ha-1 and G28: 28 Mg ha-1 of additional gypsum, applied to the surface of the plant row. Undisturbed soil samples were collected in plexiglass tubes at depths of 0.20-0.34, 0.80-0.94 and 1.50-1.64 m after six years of coffee cultivation for quantification of 3D pores obtained by X-ray CT scan. The spatial variability of the soil structure was evaluated by semivariograms generated by 3D images in grayscale. Distribution of the detectable pore diameter was conducted by data mining. Statistical analyzes employed packages 'geoR' to semivariogram and 'randomForest' for data mining in R language. A greater spatial continuity of the pores occurred in the G7 at the three depths. The combined effects of the management system promoted a greater spatial variability of the soil structure in the G28 treatment. Based on geostatistical analyses, it can be infer that the adoption of the system under study promoted changes in the pore network in all directions (X, Y and Z), however with better pores continuity in the vertical direction(Z).
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spelling Spatial variability of pores in oxidic latosol under a conservation management system with different gypsium dosesX-ray CT scanspatial pore continuitypores distributioncoffee cropSoil structure is modify when subjected to the agricultural process, i.e., a new spatial organization of the pores system is formed, with relation to the physical quality of it. Thus the aim of this work was to visualize and quantify, through X-ray CT scan, the pores distribution in an oxidic Latosol submitted to a conservation management system with different gypsum doses. Three random trenches were dug lengthwise along the plant row in a very clayey gibbsitic dystrophic Red Latosol, subjected to the following gypsum levels: G0: absence of gypsum; G7: 7 Mg ha-1 and G28: 28 Mg ha-1 of additional gypsum, applied to the surface of the plant row. Undisturbed soil samples were collected in plexiglass tubes at depths of 0.20-0.34, 0.80-0.94 and 1.50-1.64 m after six years of coffee cultivation for quantification of 3D pores obtained by X-ray CT scan. The spatial variability of the soil structure was evaluated by semivariograms generated by 3D images in grayscale. Distribution of the detectable pore diameter was conducted by data mining. Statistical analyzes employed packages 'geoR' to semivariogram and 'randomForest' for data mining in R language. A greater spatial continuity of the pores occurred in the G7 at the three depths. The combined effects of the management system promoted a greater spatial variability of the soil structure in the G28 treatment. Based on geostatistical analyses, it can be infer that the adoption of the system under study promoted changes in the pore network in all directions (X, Y and Z), however with better pores continuity in the vertical direction(Z).Editora da UFLA2014-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000500004Ciência e Agrotecnologia v.38 n.5 2014reponame:Ciência e Agrotecnologia (Online)instname:Universidade Federal de Lavras (UFLA)instacron:UFLA10.1590/S1413-70542014000500004info:eu-repo/semantics/openAccessCarducci,Carla EloizeOliveira,Geraldo CésarCuri,NiltonRossoni,Diogo FranciscoCosta,Alisson LucrécioHeck,Richard Jonheng2014-10-01T00:00:00Zoai:scielo:S1413-70542014000500004Revistahttp://www.scielo.br/cagroPUBhttps://old.scielo.br/oai/scielo-oai.php||renpaiva@dbi.ufla.br|| editora@editora.ufla.br1981-18291413-7054opendoar:2022-11-22T16:31:21.569664Ciência e Agrotecnologia (Online) - Universidade Federal de Lavras (UFLA)true
dc.title.none.fl_str_mv Spatial variability of pores in oxidic latosol under a conservation management system with different gypsium doses
title Spatial variability of pores in oxidic latosol under a conservation management system with different gypsium doses
spellingShingle Spatial variability of pores in oxidic latosol under a conservation management system with different gypsium doses
Carducci,Carla Eloize
X-ray CT scan
spatial pore continuity
pores distribution
coffee crop
title_short Spatial variability of pores in oxidic latosol under a conservation management system with different gypsium doses
title_full Spatial variability of pores in oxidic latosol under a conservation management system with different gypsium doses
title_fullStr Spatial variability of pores in oxidic latosol under a conservation management system with different gypsium doses
title_full_unstemmed Spatial variability of pores in oxidic latosol under a conservation management system with different gypsium doses
title_sort Spatial variability of pores in oxidic latosol under a conservation management system with different gypsium doses
author Carducci,Carla Eloize
author_facet Carducci,Carla Eloize
Oliveira,Geraldo César
Curi,Nilton
Rossoni,Diogo Francisco
Costa,Alisson Lucrécio
Heck,Richard Jonh
author_role author
author2 Oliveira,Geraldo César
Curi,Nilton
Rossoni,Diogo Francisco
Costa,Alisson Lucrécio
Heck,Richard Jonh
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Carducci,Carla Eloize
Oliveira,Geraldo César
Curi,Nilton
Rossoni,Diogo Francisco
Costa,Alisson Lucrécio
Heck,Richard Jonh
dc.subject.por.fl_str_mv X-ray CT scan
spatial pore continuity
pores distribution
coffee crop
topic X-ray CT scan
spatial pore continuity
pores distribution
coffee crop
description Soil structure is modify when subjected to the agricultural process, i.e., a new spatial organization of the pores system is formed, with relation to the physical quality of it. Thus the aim of this work was to visualize and quantify, through X-ray CT scan, the pores distribution in an oxidic Latosol submitted to a conservation management system with different gypsum doses. Three random trenches were dug lengthwise along the plant row in a very clayey gibbsitic dystrophic Red Latosol, subjected to the following gypsum levels: G0: absence of gypsum; G7: 7 Mg ha-1 and G28: 28 Mg ha-1 of additional gypsum, applied to the surface of the plant row. Undisturbed soil samples were collected in plexiglass tubes at depths of 0.20-0.34, 0.80-0.94 and 1.50-1.64 m after six years of coffee cultivation for quantification of 3D pores obtained by X-ray CT scan. The spatial variability of the soil structure was evaluated by semivariograms generated by 3D images in grayscale. Distribution of the detectable pore diameter was conducted by data mining. Statistical analyzes employed packages 'geoR' to semivariogram and 'randomForest' for data mining in R language. A greater spatial continuity of the pores occurred in the G7 at the three depths. The combined effects of the management system promoted a greater spatial variability of the soil structure in the G28 treatment. Based on geostatistical analyses, it can be infer that the adoption of the system under study promoted changes in the pore network in all directions (X, Y and Z), however with better pores continuity in the vertical direction(Z).
publishDate 2014
dc.date.none.fl_str_mv 2014-10-01
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=S1413-70542014000500004
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000500004
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1413-70542014000500004
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 Editora da UFLA
publisher.none.fl_str_mv Editora da UFLA
dc.source.none.fl_str_mv Ciência e Agrotecnologia v.38 n.5 2014
reponame:Ciência e Agrotecnologia (Online)
instname:Universidade Federal de Lavras (UFLA)
instacron:UFLA
instname_str Universidade Federal de Lavras (UFLA)
instacron_str UFLA
institution UFLA
reponame_str Ciência e Agrotecnologia (Online)
collection Ciência e Agrotecnologia (Online)
repository.name.fl_str_mv Ciência e Agrotecnologia (Online) - Universidade Federal de Lavras (UFLA)
repository.mail.fl_str_mv ||renpaiva@dbi.ufla.br|| editora@editora.ufla.br
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