Mild and Moderate Extraction Methods to Assess Potentially Available Soil Organic Nitrogen
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/18069657rbcs20151059 http://hdl.handle.net/11449/162568 |
Resumo: | The use of chemical methods to assess the soil organic nitrogen (N) potentially available to plants is not a common practice in Brazil. However, associated with others, this tool might improve efficiency in the use of waste and nitrogen fertilizers. In our study, chemical methods were tested to assess potentially available soil N in samples of 17 representative soils of the western plateau of the state of Sao Paulo (10 Oxisols and 7 Ultisols). Available soil N was extracted from the collected soil samples using moderate (ISNT-Illinois Soil Nitrogen Test) and mild (hot water and heated solutions of 2 mol L-1 KCl and 0.01 mol L-1 CaCl2) extraction methods. The levels of potentially available N obtained from these chemical methods were correlated with dry matter (DM) and N uptake (N-up) by corn plants grown in pots in a greenhouse experiment carried out with the same 17 soil samples. The ISNT method showed the highest available N extraction capacity, whereas hot water showed the lowest capacity, followed closely by the hot 0.01 mol L-1 CaCl2 solution. Despite the differences among the quantities of available N extracted, the methods correlated with each other and with DM and N-up, but the values from the ISNT method showed the lowest correlation with plant variables (r(DM) = 0.67** and r(Nup) = 0.81**). Procedures of extraction with water or 0.01 mol L-1 CaCl2 heated for 16 h, and 2 mol L-1 KCl heated for 4 h, resulted in similar correlation values (r) with plant DM and N-up. Thus, water (r(DM) = 0.77** and r(Nup) = 0.90**) and 0.01 mol L-1 CaCl2 (r(DM) = 0.82** and r(Nup) = 0.93**) heated for 16 h can be recommended as the best options for N extraction. considering the possibility for predicting N availability, lower generation of waste, and lower cost of analysis. |
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Mild and Moderate Extraction Methods to Assess Potentially Available Soil Organic Nitrogenchemical analysisorganic mattermineralizationThe use of chemical methods to assess the soil organic nitrogen (N) potentially available to plants is not a common practice in Brazil. However, associated with others, this tool might improve efficiency in the use of waste and nitrogen fertilizers. In our study, chemical methods were tested to assess potentially available soil N in samples of 17 representative soils of the western plateau of the state of Sao Paulo (10 Oxisols and 7 Ultisols). Available soil N was extracted from the collected soil samples using moderate (ISNT-Illinois Soil Nitrogen Test) and mild (hot water and heated solutions of 2 mol L-1 KCl and 0.01 mol L-1 CaCl2) extraction methods. The levels of potentially available N obtained from these chemical methods were correlated with dry matter (DM) and N uptake (N-up) by corn plants grown in pots in a greenhouse experiment carried out with the same 17 soil samples. The ISNT method showed the highest available N extraction capacity, whereas hot water showed the lowest capacity, followed closely by the hot 0.01 mol L-1 CaCl2 solution. Despite the differences among the quantities of available N extracted, the methods correlated with each other and with DM and N-up, but the values from the ISNT method showed the lowest correlation with plant variables (r(DM) = 0.67** and r(Nup) = 0.81**). Procedures of extraction with water or 0.01 mol L-1 CaCl2 heated for 16 h, and 2 mol L-1 KCl heated for 4 h, resulted in similar correlation values (r) with plant DM and N-up. Thus, water (r(DM) = 0.77** and r(Nup) = 0.90**) and 0.01 mol L-1 CaCl2 (r(DM) = 0.82** and r(Nup) = 0.93**) heated for 16 h can be recommended as the best options for N extraction. considering the possibility for predicting N availability, lower generation of waste, and lower cost of analysis.Univ Estadual Paulista, Fac Ciencias Agr & Vet, Dept Solos & Adubos, Programa Posgrad Agr Ciencia Solo, Jaboticabal, SP, BrazilUniv Estadual Paulista, Fac Ciencias Agr & Vet, Dept Solos & Adubos, Jaboticabal, SP, BrazilUniv Estadual Paulista, Fac Ciencias Agr & Vet, Dept Ciencias Exatas, Jaboticabal, SP, BrazilUniv Estadual Paulista, Fac Ciencias Agr & Vet, Dept Solos & Adubos, Programa Posgrad Agr Ciencia Solo, Jaboticabal, SP, BrazilUniv Estadual Paulista, Fac Ciencias Agr & Vet, Dept Solos & Adubos, Jaboticabal, SP, BrazilUniv Estadual Paulista, Fac Ciencias Agr & Vet, Dept Ciencias Exatas, Jaboticabal, SP, BrazilSoc Brasileira De Ciencia Do SoloUniversidade Estadual Paulista (Unesp)Braos, Bruno Boscov [UNESP]Ferreira, Manoel Evaristo [UNESP]Pessoa da Cruz, Mara Cristina [UNESP]Braos, Lucas Boscov [UNESP]Barbosa, Jose Carlos [UNESP]2018-11-26T17:20:57Z2018-11-26T17:20:57Z2016-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article13application/pdfhttp://dx.doi.org/10.1590/18069657rbcs20151059Revista Brasileira De Ciencia Do Solo. Vicosa: Soc Brasileira De Ciencia Do Solo, v. 40, 13 p., 2016.0100-0683http://hdl.handle.net/11449/16256810.1590/18069657rbcs20151059S0100-06832016000100422WOS:000396234000029S0100-06832016000100422.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira De Ciencia Do Solo0,679info:eu-repo/semantics/openAccess2024-06-07T14:23:00Zoai:repositorio.unesp.br:11449/162568Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:04:12.633186Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Mild and Moderate Extraction Methods to Assess Potentially Available Soil Organic Nitrogen |
title |
Mild and Moderate Extraction Methods to Assess Potentially Available Soil Organic Nitrogen |
spellingShingle |
Mild and Moderate Extraction Methods to Assess Potentially Available Soil Organic Nitrogen Braos, Bruno Boscov [UNESP] chemical analysis organic matter mineralization |
title_short |
Mild and Moderate Extraction Methods to Assess Potentially Available Soil Organic Nitrogen |
title_full |
Mild and Moderate Extraction Methods to Assess Potentially Available Soil Organic Nitrogen |
title_fullStr |
Mild and Moderate Extraction Methods to Assess Potentially Available Soil Organic Nitrogen |
title_full_unstemmed |
Mild and Moderate Extraction Methods to Assess Potentially Available Soil Organic Nitrogen |
title_sort |
Mild and Moderate Extraction Methods to Assess Potentially Available Soil Organic Nitrogen |
author |
Braos, Bruno Boscov [UNESP] |
author_facet |
Braos, Bruno Boscov [UNESP] Ferreira, Manoel Evaristo [UNESP] Pessoa da Cruz, Mara Cristina [UNESP] Braos, Lucas Boscov [UNESP] Barbosa, Jose Carlos [UNESP] |
author_role |
author |
author2 |
Ferreira, Manoel Evaristo [UNESP] Pessoa da Cruz, Mara Cristina [UNESP] Braos, Lucas Boscov [UNESP] Barbosa, Jose Carlos [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Braos, Bruno Boscov [UNESP] Ferreira, Manoel Evaristo [UNESP] Pessoa da Cruz, Mara Cristina [UNESP] Braos, Lucas Boscov [UNESP] Barbosa, Jose Carlos [UNESP] |
dc.subject.por.fl_str_mv |
chemical analysis organic matter mineralization |
topic |
chemical analysis organic matter mineralization |
description |
The use of chemical methods to assess the soil organic nitrogen (N) potentially available to plants is not a common practice in Brazil. However, associated with others, this tool might improve efficiency in the use of waste and nitrogen fertilizers. In our study, chemical methods were tested to assess potentially available soil N in samples of 17 representative soils of the western plateau of the state of Sao Paulo (10 Oxisols and 7 Ultisols). Available soil N was extracted from the collected soil samples using moderate (ISNT-Illinois Soil Nitrogen Test) and mild (hot water and heated solutions of 2 mol L-1 KCl and 0.01 mol L-1 CaCl2) extraction methods. The levels of potentially available N obtained from these chemical methods were correlated with dry matter (DM) and N uptake (N-up) by corn plants grown in pots in a greenhouse experiment carried out with the same 17 soil samples. The ISNT method showed the highest available N extraction capacity, whereas hot water showed the lowest capacity, followed closely by the hot 0.01 mol L-1 CaCl2 solution. Despite the differences among the quantities of available N extracted, the methods correlated with each other and with DM and N-up, but the values from the ISNT method showed the lowest correlation with plant variables (r(DM) = 0.67** and r(Nup) = 0.81**). Procedures of extraction with water or 0.01 mol L-1 CaCl2 heated for 16 h, and 2 mol L-1 KCl heated for 4 h, resulted in similar correlation values (r) with plant DM and N-up. Thus, water (r(DM) = 0.77** and r(Nup) = 0.90**) and 0.01 mol L-1 CaCl2 (r(DM) = 0.82** and r(Nup) = 0.93**) heated for 16 h can be recommended as the best options for N extraction. considering the possibility for predicting N availability, lower generation of waste, and lower cost of analysis. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-01-01 2018-11-26T17:20:57Z 2018-11-26T17:20:57Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/18069657rbcs20151059 Revista Brasileira De Ciencia Do Solo. Vicosa: Soc Brasileira De Ciencia Do Solo, v. 40, 13 p., 2016. 0100-0683 http://hdl.handle.net/11449/162568 10.1590/18069657rbcs20151059 S0100-06832016000100422 WOS:000396234000029 S0100-06832016000100422.pdf |
url |
http://dx.doi.org/10.1590/18069657rbcs20151059 http://hdl.handle.net/11449/162568 |
identifier_str_mv |
Revista Brasileira De Ciencia Do Solo. Vicosa: Soc Brasileira De Ciencia Do Solo, v. 40, 13 p., 2016. 0100-0683 10.1590/18069657rbcs20151059 S0100-06832016000100422 WOS:000396234000029 S0100-06832016000100422.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Revista Brasileira De Ciencia Do Solo 0,679 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
13 application/pdf |
dc.publisher.none.fl_str_mv |
Soc Brasileira De Ciencia Do Solo |
publisher.none.fl_str_mv |
Soc Brasileira De Ciencia Do Solo |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1808128453791186944 |