Spatial and temporal variability of soil electrical conductivity related to soil moisture

Detalhes bibliográficos
Autor(a) principal: Molin, José Paulo
Data de Publicação: 2013
Outros Autores: Faulin, Gustavo Di Chiacchio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Scientia Agrícola (Online)
Texto Completo: https://www.revistas.usp.br/sa/article/view/52976
Resumo: Soil electrical conductivity (ECa) is a soil quality indicator associated to attributes interesting to site-specific soil management such as soil moisture and texture. Soil ECa provides information that helps guide soil management decisions, so we performed spatial evaluation of soil moisture in two experimental fields in two consecutive years and modeled its influence on soil ECa. Soil ECa, moisture and clay content were evaluated by statistical, geostatistical and regression analyses. Semivariogram models, adjusted for soil moisture, had strong spatial dependence, but the relationship between soil moisture and soil ECa was obtained only in one of the experimental fields, where soil moisture and clay content range was higher. In this same field, coefficients of determinations between soil moisture and clay content were above 0.70. In the second field, the low soil moisture and clay content range explain the absence of a relationship between soil ECa and soil moisture. Data repetition over the years, suggested that ECa is a qualitative indicator in areas with high spatial variability in soil texture.
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spelling Spatial and temporal variability of soil electrical conductivity related to soil moisture precision agriculturesoil physicsgeostatisticssoil sensors Soil electrical conductivity (ECa) is a soil quality indicator associated to attributes interesting to site-specific soil management such as soil moisture and texture. Soil ECa provides information that helps guide soil management decisions, so we performed spatial evaluation of soil moisture in two experimental fields in two consecutive years and modeled its influence on soil ECa. Soil ECa, moisture and clay content were evaluated by statistical, geostatistical and regression analyses. Semivariogram models, adjusted for soil moisture, had strong spatial dependence, but the relationship between soil moisture and soil ECa was obtained only in one of the experimental fields, where soil moisture and clay content range was higher. In this same field, coefficients of determinations between soil moisture and clay content were above 0.70. In the second field, the low soil moisture and clay content range explain the absence of a relationship between soil ECa and soil moisture. Data repetition over the years, suggested that ECa is a qualitative indicator in areas with high spatial variability in soil texture. Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz2013-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://www.revistas.usp.br/sa/article/view/5297610.1590/S0103-90162013000100001Scientia Agricola; v. 70 n. 1 (2013); 01-05Scientia Agricola; Vol. 70 Núm. 1 (2013); 01-05Scientia Agricola; Vol. 70 No. 1 (2013); 01-051678-992X0103-9016reponame:Scientia Agrícola (Online)instname:Universidade de São Paulo (USP)instacron:USPenghttps://www.revistas.usp.br/sa/article/view/52976/57032Copyright (c) 2015 Scientia Agricolainfo:eu-repo/semantics/openAccessMolin, José PauloFaulin, Gustavo Di Chiacchio2015-07-07T19:18:38Zoai:revistas.usp.br:article/52976Revistahttp://revistas.usp.br/sa/indexPUBhttps://old.scielo.br/oai/scielo-oai.phpscientia@usp.br||alleoni@usp.br1678-992X0103-9016opendoar:2015-07-07T19:18:38Scientia Agrícola (Online) - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Spatial and temporal variability of soil electrical conductivity related to soil moisture
title Spatial and temporal variability of soil electrical conductivity related to soil moisture
spellingShingle Spatial and temporal variability of soil electrical conductivity related to soil moisture
Molin, José Paulo
precision agriculture
soil physics
geostatistics
soil sensors
title_short Spatial and temporal variability of soil electrical conductivity related to soil moisture
title_full Spatial and temporal variability of soil electrical conductivity related to soil moisture
title_fullStr Spatial and temporal variability of soil electrical conductivity related to soil moisture
title_full_unstemmed Spatial and temporal variability of soil electrical conductivity related to soil moisture
title_sort Spatial and temporal variability of soil electrical conductivity related to soil moisture
author Molin, José Paulo
author_facet Molin, José Paulo
Faulin, Gustavo Di Chiacchio
author_role author
author2 Faulin, Gustavo Di Chiacchio
author2_role author
dc.contributor.author.fl_str_mv Molin, José Paulo
Faulin, Gustavo Di Chiacchio
dc.subject.por.fl_str_mv precision agriculture
soil physics
geostatistics
soil sensors
topic precision agriculture
soil physics
geostatistics
soil sensors
description Soil electrical conductivity (ECa) is a soil quality indicator associated to attributes interesting to site-specific soil management such as soil moisture and texture. Soil ECa provides information that helps guide soil management decisions, so we performed spatial evaluation of soil moisture in two experimental fields in two consecutive years and modeled its influence on soil ECa. Soil ECa, moisture and clay content were evaluated by statistical, geostatistical and regression analyses. Semivariogram models, adjusted for soil moisture, had strong spatial dependence, but the relationship between soil moisture and soil ECa was obtained only in one of the experimental fields, where soil moisture and clay content range was higher. In this same field, coefficients of determinations between soil moisture and clay content were above 0.70. In the second field, the low soil moisture and clay content range explain the absence of a relationship between soil ECa and soil moisture. Data repetition over the years, suggested that ECa is a qualitative indicator in areas with high spatial variability in soil texture.
publishDate 2013
dc.date.none.fl_str_mv 2013-02-01
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://www.revistas.usp.br/sa/article/view/52976
10.1590/S0103-90162013000100001
url https://www.revistas.usp.br/sa/article/view/52976
identifier_str_mv 10.1590/S0103-90162013000100001
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.revistas.usp.br/sa/article/view/52976/57032
dc.rights.driver.fl_str_mv Copyright (c) 2015 Scientia Agricola
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2015 Scientia Agricola
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz
publisher.none.fl_str_mv Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz
dc.source.none.fl_str_mv Scientia Agricola; v. 70 n. 1 (2013); 01-05
Scientia Agricola; Vol. 70 Núm. 1 (2013); 01-05
Scientia Agricola; Vol. 70 No. 1 (2013); 01-05
1678-992X
0103-9016
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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