Selection of methods for the evaluation of available soil copper
Autor(a) principal: | |
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Data de Publicação: | 2014 |
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/13477 |
Resumo: | The purpose of this study was to evaluate various extractants for predicting available copper in soils. Thirty surface soil samples representing five great soil groups ("Solos Podzolizados de Lins e Marília variação Lins" and "variação Marília", "Latossolo Vermelho-Escuro, fase arenosa", "Latossolo Roxo" and "Terra Roxa Estruturada") were gathered from fields in Jaboticabal, SP, Brazil, and corn (Zea mays, L.) was used as indicator plant in a greenhouse experiment. Available copper concentration in each soil sample was determined by the following extracting solutions: 0.5 M CaCl2, 2.0 N MgCl2, 1,0 N CH3COONH 4 adjusted at pH 6.0 and 4.8, 0.05 and 0.1 N HCl, 0.05 N H2SO4 , 0,035 M DTPA pH 7.3 and pH 6.0, 0.01 M EDTA + 1.0 M (NH4)2CO3 (pH 8.6) and 0.02 M EDTA + 0.5 M CH3C00H + 0.5 M CH3COONH4 (AAAc-EDTA pH 4.65) and Na2EDTA 1%. The best method was chosen with the helps of correlation and regression coefficients between the soil copper extracted from the different procedures and that one absorbed by the plant. With exception to 0.5 M CaCl2, all extractants gave significant and well near correlation coefficients. Also by using variation and angular coefficients and the easiness of the method one of the follow extractants can be indicated to evaluate the available soil copper: 0.005 M DTPA pH 7.3, 0.1 N HCl and 1.0% Na2EDTA |
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Selection of methods for the evaluation of available soil copperSeleção de métodos para avaliação do cobre disponível nos solossoil fertility; soi analysis.fertilidade do solo; análise de solosThe purpose of this study was to evaluate various extractants for predicting available copper in soils. Thirty surface soil samples representing five great soil groups ("Solos Podzolizados de Lins e Marília variação Lins" and "variação Marília", "Latossolo Vermelho-Escuro, fase arenosa", "Latossolo Roxo" and "Terra Roxa Estruturada") were gathered from fields in Jaboticabal, SP, Brazil, and corn (Zea mays, L.) was used as indicator plant in a greenhouse experiment. Available copper concentration in each soil sample was determined by the following extracting solutions: 0.5 M CaCl2, 2.0 N MgCl2, 1,0 N CH3COONH 4 adjusted at pH 6.0 and 4.8, 0.05 and 0.1 N HCl, 0.05 N H2SO4 , 0,035 M DTPA pH 7.3 and pH 6.0, 0.01 M EDTA + 1.0 M (NH4)2CO3 (pH 8.6) and 0.02 M EDTA + 0.5 M CH3C00H + 0.5 M CH3COONH4 (AAAc-EDTA pH 4.65) and Na2EDTA 1%. The best method was chosen with the helps of correlation and regression coefficients between the soil copper extracted from the different procedures and that one absorbed by the plant. With exception to 0.5 M CaCl2, all extractants gave significant and well near correlation coefficients. Also by using variation and angular coefficients and the easiness of the method one of the follow extractants can be indicated to evaluate the available soil copper: 0.005 M DTPA pH 7.3, 0.1 N HCl and 1.0% Na2EDTAFez-se um estudo de seleção de métodos para cobre disponível, empregando-se trinta solos coletados na região de Jaboticabal, SP. Os solos utilizados pertencem aos seguintes grandes grupos: Solos Podzolizados de Lins e Marília, variação Lins e variação Marília, Latossolo Vermelho-Escuro fase arenosa, Latossolo Roxo, e Terra Roxa Estruturada. O cobre dos solos foi extraído através das seguintes soluções extratoras: CaCl2 0,5 M; Mg02 2,0 N; CH3COONH4 1,0 N1 pH 6,0 e pH 4,8; HCl 0,05 N e O,1 N; H2SO4 0,05 N; DTPA 0,005 M pH 7,3 e pH 6,0; EDTA 0,01 M + (NH4)2CO3 1,0 MpH 8,6; EDTA 0,02 M + CH3C0011 0,5 M + CH3COONH4 0,5 M pH 4,65 (AAAc-EDTA); e Na2EDTA 1,0%. Foi realizado ensaio em casa de vegetação, e o milho (Zea mays L.) foi empregado como planta teste. Excluindo-se o extrator CaCl2 0,5 M, todos os demais apresentaram coeficientes de correlação entre cobre extraído do solo e o absorvido pelo milho, significativos e próximos uns dos outros. Assim, com base também em parâmetros como o coeficiente de variação, o coeficiente angular e a praticidade do método, pode-se indicar um dos seguintes extratores para a avaliação do cobre disponível dos solos: DTPA 0,005 M pH 7,3, HCl 0,1 N e Na2EDTA 1,0%.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCruz, Mara Cristina Pessôa daFerreira, Manoel Evaristo2014-04-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/13477Pesquisa Agropecuaria Brasileira; v.25, n.4, abr. 1990; 647-659Pesquisa Agropecuária Brasileira; v.25, n.4, abr. 1990; 647-6591678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/13477/7585info:eu-repo/semantics/openAccess2014-04-17T14:30:52Zoai:ojs.seer.sct.embrapa.br:article/13477Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-17T14:30:52Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Selection of methods for the evaluation of available soil copper Seleção de métodos para avaliação do cobre disponível nos solos |
title |
Selection of methods for the evaluation of available soil copper |
spellingShingle |
Selection of methods for the evaluation of available soil copper Cruz, Mara Cristina Pessôa da soil fertility; soi analysis. fertilidade do solo; análise de solos |
title_short |
Selection of methods for the evaluation of available soil copper |
title_full |
Selection of methods for the evaluation of available soil copper |
title_fullStr |
Selection of methods for the evaluation of available soil copper |
title_full_unstemmed |
Selection of methods for the evaluation of available soil copper |
title_sort |
Selection of methods for the evaluation of available soil copper |
author |
Cruz, Mara Cristina Pessôa da |
author_facet |
Cruz, Mara Cristina Pessôa da Ferreira, Manoel Evaristo |
author_role |
author |
author2 |
Ferreira, Manoel Evaristo |
author2_role |
author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Cruz, Mara Cristina Pessôa da Ferreira, Manoel Evaristo |
dc.subject.por.fl_str_mv |
soil fertility; soi analysis. fertilidade do solo; análise de solos |
topic |
soil fertility; soi analysis. fertilidade do solo; análise de solos |
description |
The purpose of this study was to evaluate various extractants for predicting available copper in soils. Thirty surface soil samples representing five great soil groups ("Solos Podzolizados de Lins e Marília variação Lins" and "variação Marília", "Latossolo Vermelho-Escuro, fase arenosa", "Latossolo Roxo" and "Terra Roxa Estruturada") were gathered from fields in Jaboticabal, SP, Brazil, and corn (Zea mays, L.) was used as indicator plant in a greenhouse experiment. Available copper concentration in each soil sample was determined by the following extracting solutions: 0.5 M CaCl2, 2.0 N MgCl2, 1,0 N CH3COONH 4 adjusted at pH 6.0 and 4.8, 0.05 and 0.1 N HCl, 0.05 N H2SO4 , 0,035 M DTPA pH 7.3 and pH 6.0, 0.01 M EDTA + 1.0 M (NH4)2CO3 (pH 8.6) and 0.02 M EDTA + 0.5 M CH3C00H + 0.5 M CH3COONH4 (AAAc-EDTA pH 4.65) and Na2EDTA 1%. The best method was chosen with the helps of correlation and regression coefficients between the soil copper extracted from the different procedures and that one absorbed by the plant. With exception to 0.5 M CaCl2, all extractants gave significant and well near correlation coefficients. Also by using variation and angular coefficients and the easiness of the method one of the follow extractants can be indicated to evaluate the available soil copper: 0.005 M DTPA pH 7.3, 0.1 N HCl and 1.0% Na2EDTA |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-17 |
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/13477 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/13477 |
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/13477/7585 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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.25, n.4, abr. 1990; 647-659 Pesquisa Agropecuária Brasileira; v.25, n.4, abr. 1990; 647-659 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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1793416659841581056 |