Moisture content effect in the relationship between apparent electrical conductivity and soil attributes
Autor(a) principal: | |
---|---|
Data de Publicação: | 2014 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta Scientiarum. Agronomy (Online) |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/18342 |
Resumo: | To map the spatial variability of a field to define the variable rate application, an intensive sampling of the soil-plant system is necessary. The apparent soil electrical conductivity (ECa) has been used for soil mapping because it correlates well with soil attributes, allows for dense sampling and can be obtained at low cost. However, ECa is influenced by soil moisture content, and the variability of this attribute can reduce the reliability of the ECa maps to explain the physical and chemical soil attributes. The objective of this study was to identify conditions that maximize the correlations between the ECa and the soil attributes. The results show that the mean soil moisture content of soil sampled on different dates was correlated with the mean of the ECa. The ideal time for measuring ECa occurred when the mean moisture content of the soil was higher. In this condition, the coefficient of variation for the soil moisture content was lower, there was no correlation between ECa and soil moisture content, and ECa was more correlated with other soil attributes evaluated in this work. |
id |
UEM-5_0f27bbc206933e4e1b2448c9c4a56d70 |
---|---|
oai_identifier_str |
oai:periodicos.uem.br/ojs:article/18342 |
network_acronym_str |
UEM-5 |
network_name_str |
Acta Scientiarum. Agronomy (Online) |
repository_id_str |
|
spelling |
Moisture content effect in the relationship between apparent electrical conductivity and soil attributesprecision agriculturetemporal variabilitysoil moisture contentTo map the spatial variability of a field to define the variable rate application, an intensive sampling of the soil-plant system is necessary. The apparent soil electrical conductivity (ECa) has been used for soil mapping because it correlates well with soil attributes, allows for dense sampling and can be obtained at low cost. However, ECa is influenced by soil moisture content, and the variability of this attribute can reduce the reliability of the ECa maps to explain the physical and chemical soil attributes. The objective of this study was to identify conditions that maximize the correlations between the ECa and the soil attributes. The results show that the mean soil moisture content of soil sampled on different dates was correlated with the mean of the ECa. The ideal time for measuring ECa occurred when the mean moisture content of the soil was higher. In this condition, the coefficient of variation for the soil moisture content was lower, there was no correlation between ECa and soil moisture content, and ECa was more correlated with other soil attributes evaluated in this work. Universidade Estadual de Maringá2014-08-21info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa Empírica de CampoAgricultura de precisão; Variabilidade espacial; Umidade do soloapplication/pdfapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/1834210.4025/actasciagron.v36i4.18342Acta Scientiarum. Agronomy; Vol 36 No 4 (2014); 395-401Acta Scientiarum. Agronomy; v. 36 n. 4 (2014); 395-4011807-86211679-9275reponame:Acta Scientiarum. Agronomy (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMenghttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/18342/pdf_32http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/18342/751375141768Costa, Marcelo MarquesQueiroz, Daniel Marçal dePinto, Francisco de Assis de CarvalhoReis, Elton Fialho dosSantos, Nerilson Terrainfo:eu-repo/semantics/openAccess2014-12-04T09:31:22Zoai:periodicos.uem.br/ojs:article/18342Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgronPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/oaiactaagron@uem.br||actaagron@uem.br|| edamasio@uem.br1807-86211679-9275opendoar:2014-12-04T09:31:22Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Moisture content effect in the relationship between apparent electrical conductivity and soil attributes |
title |
Moisture content effect in the relationship between apparent electrical conductivity and soil attributes |
spellingShingle |
Moisture content effect in the relationship between apparent electrical conductivity and soil attributes Costa, Marcelo Marques precision agriculture temporal variability soil moisture content |
title_short |
Moisture content effect in the relationship between apparent electrical conductivity and soil attributes |
title_full |
Moisture content effect in the relationship between apparent electrical conductivity and soil attributes |
title_fullStr |
Moisture content effect in the relationship between apparent electrical conductivity and soil attributes |
title_full_unstemmed |
Moisture content effect in the relationship between apparent electrical conductivity and soil attributes |
title_sort |
Moisture content effect in the relationship between apparent electrical conductivity and soil attributes |
author |
Costa, Marcelo Marques |
author_facet |
Costa, Marcelo Marques Queiroz, Daniel Marçal de Pinto, Francisco de Assis de Carvalho Reis, Elton Fialho dos Santos, Nerilson Terra |
author_role |
author |
author2 |
Queiroz, Daniel Marçal de Pinto, Francisco de Assis de Carvalho Reis, Elton Fialho dos Santos, Nerilson Terra |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Costa, Marcelo Marques Queiroz, Daniel Marçal de Pinto, Francisco de Assis de Carvalho Reis, Elton Fialho dos Santos, Nerilson Terra |
dc.subject.por.fl_str_mv |
precision agriculture temporal variability soil moisture content |
topic |
precision agriculture temporal variability soil moisture content |
description |
To map the spatial variability of a field to define the variable rate application, an intensive sampling of the soil-plant system is necessary. The apparent soil electrical conductivity (ECa) has been used for soil mapping because it correlates well with soil attributes, allows for dense sampling and can be obtained at low cost. However, ECa is influenced by soil moisture content, and the variability of this attribute can reduce the reliability of the ECa maps to explain the physical and chemical soil attributes. The objective of this study was to identify conditions that maximize the correlations between the ECa and the soil attributes. The results show that the mean soil moisture content of soil sampled on different dates was correlated with the mean of the ECa. The ideal time for measuring ECa occurred when the mean moisture content of the soil was higher. In this condition, the coefficient of variation for the soil moisture content was lower, there was no correlation between ECa and soil moisture content, and ECa was more correlated with other soil attributes evaluated in this work. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-08-21 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa Empírica de Campo Agricultura de precisão; Variabilidade espacial; Umidade do solo |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/18342 10.4025/actasciagron.v36i4.18342 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/18342 |
identifier_str_mv |
10.4025/actasciagron.v36i4.18342 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/18342/pdf_32 http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/18342/751375141768 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual de Maringá |
publisher.none.fl_str_mv |
Universidade Estadual de Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Agronomy; Vol 36 No 4 (2014); 395-401 Acta Scientiarum. Agronomy; v. 36 n. 4 (2014); 395-401 1807-8621 1679-9275 reponame:Acta Scientiarum. Agronomy (Online) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum. Agronomy (Online) |
collection |
Acta Scientiarum. Agronomy (Online) |
repository.name.fl_str_mv |
Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
actaagron@uem.br||actaagron@uem.br|| edamasio@uem.br |
_version_ |
1799305908884340736 |