On-the-go tropical soil sensing for pH determination using ion-selective electrodes

Detalhes bibliográficos
Autor(a) principal: Silva, Fernanda Cristina de Souza
Data de Publicação: 2018
Outros Autores: Molin, José Paulo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/22930
Resumo: The objective of this work was to assess the performance of an antimony ion-selective electrode (ISE) sensor system, using manual and automatic operating modes, for measuring the potential of hydrogen (pH), in real time, in Oxisols with different characteristics. Samples were manually collected and sent to a laboratory for determination of pH in water and calcium chloride, whose values were used as references. Another set of samples was also automatically collected using a commercial equipment, and readings were performed in manual mode. The performance parameters of the sensor system were calculated and evaluated. Part of the soil samples was used to assess the degree of influence of moisture in determining pH. Calibration lines were constructed. The statistical analysis revealed better results for the manual mode. Both modes of operation had errors superior to those accepted as a limit in laboratory techniques, however, with the possibility of high data density and with positive and promising results. Soil moisture interfered with the result of the readings. The sensor system yields a sampling density of 45 data per hectare, which represents a great contribution to the intensification of data for a better spatial evaluation of soil information.
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spelling On-the-go tropical soil sensing for pH determination using ion-selective electrodesMensuração direta do pH de solos tropicais por meio de eletrodos íon seletivosdirect soil sensing; precision agriculture; real-time mappingsensores diretos de solo; agricultura de precisão; mapeamento em tempo realThe objective of this work was to assess the performance of an antimony ion-selective electrode (ISE) sensor system, using manual and automatic operating modes, for measuring the potential of hydrogen (pH), in real time, in Oxisols with different characteristics. Samples were manually collected and sent to a laboratory for determination of pH in water and calcium chloride, whose values were used as references. Another set of samples was also automatically collected using a commercial equipment, and readings were performed in manual mode. The performance parameters of the sensor system were calculated and evaluated. Part of the soil samples was used to assess the degree of influence of moisture in determining pH. Calibration lines were constructed. The statistical analysis revealed better results for the manual mode. Both modes of operation had errors superior to those accepted as a limit in laboratory techniques, however, with the possibility of high data density and with positive and promising results. Soil moisture interfered with the result of the readings. The sensor system yields a sampling density of 45 data per hectare, which represents a great contribution to the intensification of data for a better spatial evaluation of soil information.O objetivo deste trabalho foi avaliar o desempenho de um conjunto sensor direto, de íon seletivo (ISE) de antimônio, usando os modos de funcionamento manual e automático, na determinação do potencial hidrogeniônico (pH), em tempo real, em Latossolos com diferentes características. Amostras foram coletadas com trado e encaminhadas a laboratório para a determinação do pH em água e do cloreto de cálcio, cujos valores foram utilizados como referência. Um segundo conjunto de amostras foi coletado automaticamente utilizando-se um equipamento disponível no mercado, e foram executadas leituras em seu modo manual. Parâmetros de desempenho do conjunto foram calculados e avaliados. Parte dessas amostras de solo foi utilizada para avaliar a influência da umidade na determinação do pH. Retas de calibração foram construídas. As análises estatísticas apresentaram melhor resultado para o modo manual. Ambos os modos de operação apresentaram erros superiores aos aceitos como limite em técnicas laboratoriais, porém, com a possibilidade de elevada densidade de dados e com resultados positivos e promissores. Verificou-se que a umidade do solo interferiu no resultado das leituras. O conjunto sensor fornece uma densidade de amostragem de 45 dados por hectare, o que representa uma grande contribuição para a intensificação de dados para melhor avaliação espacial da informação do solo.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFinanciadora de Estudos e Projetos (Finep, project no. 01.08.0566.00)Zambianco Açúcar e ÁlcoolSilva, Fernanda Cristina de SouzaMolin, José Paulo2018-12-13info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/22930Pesquisa Agropecuaria Brasileira; v.53, n.11, nov. 2018; 1189-1202Pesquisa Agropecuária Brasileira; v.53, n.11, nov. 2018; 1189-12021678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAenghttps://seer.sct.embrapa.br/index.php/pab/article/view/22930/14334https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/22930/14935Direitos autorais 2018 Pesquisa Agropecuária Brasileirainfo:eu-repo/semantics/openAccess2018-12-17T19:23:28Zoai:ojs.seer.sct.embrapa.br:article/22930Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2018-12-17T19:23:28Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv On-the-go tropical soil sensing for pH determination using ion-selective electrodes
Mensuração direta do pH de solos tropicais por meio de eletrodos íon seletivos
title On-the-go tropical soil sensing for pH determination using ion-selective electrodes
spellingShingle On-the-go tropical soil sensing for pH determination using ion-selective electrodes
Silva, Fernanda Cristina de Souza
direct soil sensing; precision agriculture; real-time mapping
sensores diretos de solo; agricultura de precisão; mapeamento em tempo real
title_short On-the-go tropical soil sensing for pH determination using ion-selective electrodes
title_full On-the-go tropical soil sensing for pH determination using ion-selective electrodes
title_fullStr On-the-go tropical soil sensing for pH determination using ion-selective electrodes
title_full_unstemmed On-the-go tropical soil sensing for pH determination using ion-selective electrodes
title_sort On-the-go tropical soil sensing for pH determination using ion-selective electrodes
author Silva, Fernanda Cristina de Souza
author_facet Silva, Fernanda Cristina de Souza
Molin, José Paulo
author_role author
author2 Molin, José Paulo
author2_role author
dc.contributor.none.fl_str_mv
Financiadora de Estudos e Projetos (Finep, project no. 01.08.0566.00)
Zambianco Açúcar e Álcool
dc.contributor.author.fl_str_mv Silva, Fernanda Cristina de Souza
Molin, José Paulo
dc.subject.por.fl_str_mv direct soil sensing; precision agriculture; real-time mapping
sensores diretos de solo; agricultura de precisão; mapeamento em tempo real
topic direct soil sensing; precision agriculture; real-time mapping
sensores diretos de solo; agricultura de precisão; mapeamento em tempo real
description The objective of this work was to assess the performance of an antimony ion-selective electrode (ISE) sensor system, using manual and automatic operating modes, for measuring the potential of hydrogen (pH), in real time, in Oxisols with different characteristics. Samples were manually collected and sent to a laboratory for determination of pH in water and calcium chloride, whose values were used as references. Another set of samples was also automatically collected using a commercial equipment, and readings were performed in manual mode. The performance parameters of the sensor system were calculated and evaluated. Part of the soil samples was used to assess the degree of influence of moisture in determining pH. Calibration lines were constructed. The statistical analysis revealed better results for the manual mode. Both modes of operation had errors superior to those accepted as a limit in laboratory techniques, however, with the possibility of high data density and with positive and promising results. Soil moisture interfered with the result of the readings. The sensor system yields a sampling density of 45 data per hectare, which represents a great contribution to the intensification of data for a better spatial evaluation of soil information.
publishDate 2018
dc.date.none.fl_str_mv 2018-12-13
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/22930
url https://seer.sct.embrapa.br/index.php/pab/article/view/22930
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/22930/14334
https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/22930/14935
dc.rights.driver.fl_str_mv Direitos autorais 2018 Pesquisa Agropecuária Brasileira
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Direitos autorais 2018 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.53, n.11, nov. 2018; 1189-1202
Pesquisa Agropecuária Brasileira; v.53, n.11, nov. 2018; 1189-1202
1678-3921
0100-104x
reponame:Pesquisa Agropecuária Brasileira (Online)
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instacron:EMBRAPA
instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
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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)
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