Spatial variability of the least limiting water range of soils under a no‑tillage system
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , |
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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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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