Spatial variability of the least limiting water range of soils under a no‑tillage system

Detalhes bibliográficos
Autor(a) principal: Klein, Vilson Antonio
Data de Publicação: 2016
Outros Autores: Graebin, Gilvan Jaciel, Bortolanza, Delcio Rudinei, Daubermann, André Guilherme
Tipo de documento: Artigo
Idioma: por
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/23249
Resumo: The objective of this work was to evaluate the regressions that define the least limiting water range limits and the validity of using this indicator considering the spatial variability of crops under a no‑tillage system. One hundred undisturbed soil samples were collected in areas with dimensions of 10x10 m, in two different Oxisols and an Ultisol managed under no‑tillage. Air‑filled porosity (0.10 m3 m-3), field capacity (potential of ‑ 0.006 MPa), permanent wilting point (potential of ‑ 1.5 MPa), and soil mechanical resistance (2 MPa) were determined. The regressions that described field capacity had the lowest coefficients of determination, whereas those that described air‑filled porosity, permanent wilting point, and soil mechanical resistance to penetration showed the highest values. Regression adjustments that define field capacity limits arenot accurate in explaining variation on volumetric soil water content through bulk density, and the evaluated soils show high spatial variability regarding the least limiting water range.
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spelling Spatial variability of the least limiting water range of soils under a no‑tillage systemfield capacity, permanent wilting point, air‑filled porosity, soil mechanical resistance to penetrationThe objective of this work was to evaluate the regressions that define the least limiting water range limits and the validity of using this indicator considering the spatial variability of crops under a no‑tillage system. One hundred undisturbed soil samples were collected in areas with dimensions of 10x10 m, in two different Oxisols and an Ultisol managed under no‑tillage. Air‑filled porosity (0.10 m3 m-3), field capacity (potential of ‑ 0.006 MPa), permanent wilting point (potential of ‑ 1.5 MPa), and soil mechanical resistance (2 MPa) were determined. The regressions that described field capacity had the lowest coefficients of determination, whereas those that described air‑filled porosity, permanent wilting point, and soil mechanical resistance to penetration showed the highest values. Regression adjustments that define field capacity limits arenot accurate in explaining variation on volumetric soil water content through bulk density, and the evaluated soils show high spatial variability regarding the least limiting water range.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (Capes)Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul (Fapergs)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Klein, Vilson AntonioGraebin, Gilvan JacielBortolanza, Delcio RudineiDaubermann, André Guilherme2016-12-23info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/23249Pesquisa Agropecuaria Brasileira; v.51, n.11, nov. 2016; 1890-1898Pesquisa Agropecuária Brasileira; v.51, n.11, nov. 2016; 1890-18981678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/23249/13637https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/23249/15242Direitos autorais 2016 Pesquisa Agropecuária Brasileirainfo:eu-repo/semantics/openAccess2016-12-23T12:32:40Zoai:ojs.seer.sct.embrapa.br:article/23249Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2016-12-23T12:32:40Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Spatial variability of the least limiting water range of soils under a no‑tillage system
title Spatial variability of the least limiting water range of soils under a no‑tillage system
spellingShingle Spatial variability of the least limiting water range of soils under a no‑tillage system
Klein, Vilson Antonio
field capacity, permanent wilting point, air‑filled porosity, soil mechanical resistance to penetration
title_short Spatial variability of the least limiting water range of soils under a no‑tillage system
title_full Spatial variability of the least limiting water range of soils under a no‑tillage system
title_fullStr Spatial variability of the least limiting water range of soils under a no‑tillage system
title_full_unstemmed Spatial variability of the least limiting water range of soils under a no‑tillage system
title_sort Spatial variability of the least limiting water range of soils under a no‑tillage system
author Klein, Vilson Antonio
author_facet Klein, Vilson Antonio
Graebin, Gilvan Jaciel
Bortolanza, Delcio Rudinei
Daubermann, André Guilherme
author_role author
author2 Graebin, Gilvan Jaciel
Bortolanza, Delcio Rudinei
Daubermann, André Guilherme
author2_role author
author
author
dc.contributor.none.fl_str_mv Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Capes)
Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul (Fapergs)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.contributor.author.fl_str_mv Klein, Vilson Antonio
Graebin, Gilvan Jaciel
Bortolanza, Delcio Rudinei
Daubermann, André Guilherme
dc.subject.por.fl_str_mv field capacity, permanent wilting point, air‑filled porosity, soil mechanical resistance to penetration
topic field capacity, permanent wilting point, air‑filled porosity, soil mechanical resistance to penetration
description The objective of this work was to evaluate the regressions that define the least limiting water range limits and the validity of using this indicator considering the spatial variability of crops under a no‑tillage system. One hundred undisturbed soil samples were collected in areas with dimensions of 10x10 m, in two different Oxisols and an Ultisol managed under no‑tillage. Air‑filled porosity (0.10 m3 m-3), field capacity (potential of ‑ 0.006 MPa), permanent wilting point (potential of ‑ 1.5 MPa), and soil mechanical resistance (2 MPa) were determined. The regressions that described field capacity had the lowest coefficients of determination, whereas those that described air‑filled porosity, permanent wilting point, and soil mechanical resistance to penetration showed the highest values. Regression adjustments that define field capacity limits arenot accurate in explaining variation on volumetric soil water content through bulk density, and the evaluated soils show high spatial variability regarding the least limiting water range.
publishDate 2016
dc.date.none.fl_str_mv 2016-12-23
dc.type.none.fl_str_mv
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/23249
url https://seer.sct.embrapa.br/index.php/pab/article/view/23249
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/23249/13637
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/23249/15242
dc.rights.driver.fl_str_mv Direitos autorais 2016 Pesquisa Agropecuária Brasileira
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Direitos autorais 2016 Pesquisa Agropecuária Brasileira
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
publisher.none.fl_str_mv Pesquisa Agropecuaria Brasileira
Pesquisa Agropecuária Brasileira
dc.source.none.fl_str_mv Pesquisa Agropecuaria Brasileira; v.51, n.11, nov. 2016; 1890-1898
Pesquisa Agropecuária Brasileira; v.51, n.11, nov. 2016; 1890-1898
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
instacron_str EMBRAPA
institution EMBRAPA
reponame_str Pesquisa Agropecuária Brasileira (Online)
collection Pesquisa Agropecuária Brasileira (Online)
repository.name.fl_str_mv Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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