Atributos químicos do solo de várzea tropical cultivado com arroz irrigado em razão do manejo do nitrogênio
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFG |
Texto Completo: | http://repositorio.bc.ufg.br/tede/handle/tede/6826 |
Resumo: | In the last years, due to the government effort, especially in the Tocantins State, there have been significante increase on flooded rice production areas. However, there are few studies about nitrogen sources and doses in that region, which could improve the nitrogen efficiency use and provide higher incomes for farmers. This study aimed to determine the effects of different sources and doses of nitrogen in flooded lowland soils in the pH, redox potential and the concentration of ions in the soil solution in order to obtain the economicallyand environmentally best mineral nitrogen source and dose. The samples were collected in the 2014/2015 season at the Embrapa Rice and Beans Experimental Field - Palmital Farm-, in a Dystric Gleysol. The design was a complete randomized blocks, with four replications, two sources of nitrogen (common urea and slow release urea), three nitrogen rates (30, 70, 150 kg ha-1), and a control, without any N application.Soil solution samples were collected weekly, during the flooded period in rice cultivation, BRS Catiana genotype. The pH analysis and Eh (redoxpotential) were immediately read, just after the soil solution sampling, in the field, and thenHCl (2M) acidified,, and immediately frozen for later analysis of the following ions: Ca, Mg, K, Fe, Zn, Mn, MOS, NO3- and NH4+. The sources used did not affect the release of nutrients dynamics to the soil solution. The anaerobic condition caused changes in the Eh and ions solubility in the soil solution. The doses applied changed Ca and MOS concentrations in solution, and the dose of 150 kg ha-1 N showed the highest values for both. |
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Brasil, Eliana Paula Fernandeshttp://lattes.cnpq.br/7324619074753727Brasil, Eliana Paula FernandesSilva, Mellissa Ananias Soler daLeandro, Wilson MozenaSantos, Alberto Baêta doshttp://lattes.cnpq.br/9111930162770542Gonçalves, Gustavo de Melo Oliveira2017-02-08T10:12:49Z2016-07-29GONÇALVES, G. M. O. Atributos químicos do solo de várzea tropical cultivado com arroz irrigado em razão do manejo do nitrogênio. 2016. 62 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Goiás, Goiânia, 2016.http://repositorio.bc.ufg.br/tede/handle/tede/6826ark:/38995/0013000003vt7In the last years, due to the government effort, especially in the Tocantins State, there have been significante increase on flooded rice production areas. However, there are few studies about nitrogen sources and doses in that region, which could improve the nitrogen efficiency use and provide higher incomes for farmers. This study aimed to determine the effects of different sources and doses of nitrogen in flooded lowland soils in the pH, redox potential and the concentration of ions in the soil solution in order to obtain the economicallyand environmentally best mineral nitrogen source and dose. The samples were collected in the 2014/2015 season at the Embrapa Rice and Beans Experimental Field - Palmital Farm-, in a Dystric Gleysol. The design was a complete randomized blocks, with four replications, two sources of nitrogen (common urea and slow release urea), three nitrogen rates (30, 70, 150 kg ha-1), and a control, without any N application.Soil solution samples were collected weekly, during the flooded period in rice cultivation, BRS Catiana genotype. The pH analysis and Eh (redoxpotential) were immediately read, just after the soil solution sampling, in the field, and thenHCl (2M) acidified,, and immediately frozen for later analysis of the following ions: Ca, Mg, K, Fe, Zn, Mn, MOS, NO3- and NH4+. The sources used did not affect the release of nutrients dynamics to the soil solution. The anaerobic condition caused changes in the Eh and ions solubility in the soil solution. The doses applied changed Ca and MOS concentrations in solution, and the dose of 150 kg ha-1 N showed the highest values for both.Nos últimos anos, devido incentivos do governo, especialmente no Estado do Tocantins, houve significante aumento em áreas de produção de arroz irrigado. No entanto, existem poucos estudos sobre fontes de nitrogênio e doses naquela região, o que poderia melhorar a eficiência de uso de nitrogênio e proporcionar maiores rendimentos para os produtores rurais. O presente trabalho teve como objetivo determinar os efeitos de diferentes fontes e doses de nitrogênio em solos de várzea inundados no pH, potencial redox e na concentração de íons da solução do solo, visando a obtenção da fonte e dose de fertilizante economicamente viável e ambientalmente sustentável. As amostras foram coletadas na safra 2014/2015 no Campo Experimental da Fazenda Palmital, da Embrapa Arroz e Feijão, em Gleissolo Háplico. O delineamento utilizado foi o de blocos casualizados com quatro repetições, sendo duas fontes de nitrogênio (ureia comum e ureia de liberação lenta), três doses de N aplicadas em cobertura (30, 70, 150 kg ha-1), e a testemunha absoluta, sem aplicação alguma de N. Foram coletadas amostras de solução do solo, semanalmente, durante o período de inundação no cultivo do arroz, cultivar BRS Catiana. As análises de pH e Eh (potencial de oxirredução) foram feitas logo após a coleta da solução do solo no campo, e então, acidificadas com HCl (2M), e imediatamente congeladas para posterior análise dos seguintes elementos: Ca, Mg, K, Fe, Zn, Mn, MOS, NO3- e NH4+. As fontes utilizadas não interferiram na dinâmica de liberação dos nutrientes para solução do solo. A condição de anaerobiose causou modificações no estado de oxirredução e alterou a solubilidade dos nutrientes na solução do solo. As doses aplicadas alteraram as concentrações de Ca e MOS na solução, sendo a dose de 150 kg ha-1 de N a dose que apresentou os maiores valores para ambos.Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2017-02-08T10:12:21Z No. of bitstreams: 2 Dissertação - Gustavo de Melo Oliveira Gonçalves - 2016.pdf: 1630959 bytes, checksum: 90d5f7c22407381803a1e520c265c080 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2017-02-08T10:12:49Z (GMT) No. of bitstreams: 2 Dissertação - Gustavo de Melo Oliveira Gonçalves - 2016.pdf: 1630959 bytes, checksum: 90d5f7c22407381803a1e520c265c080 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)Made available in DSpace on 2017-02-08T10:12:49Z (GMT). No. of bitstreams: 2 Dissertação - Gustavo de Melo Oliveira Gonçalves - 2016.pdf: 1630959 bytes, checksum: 90d5f7c22407381803a1e520c265c080 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2016-07-29Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESapplication/pdfporUniversidade Federal de GoiásPrograma de Pós-graduação em Agronomia (EAEA)UFGBrasilEscola de Agronomia e Engenharia de Alimentos - EAEA (RG)http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessPotencial redoxOryza sativaAlterações químicasQuímica do soloUso eficiente de nitrogênioRedox potentialOryza sativaChemical changesSoil chemistryNitrogen use efficiencyAGRONOMIA::CIENCIA DO SOLOAtributos químicos do solo de várzea tropical cultivado com arroz irrigado em razão do manejo do nitrogênioChemical attributes of tropical varzea soil cultivated with rice irrigated for nitrogen managementinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis8421195611339883816006006006004500684695727928426-59198405272323756712075167498588264571reponame:Repositório Institucional da UFGinstname:Universidade Federal de Goiás (UFG)instacron:UFGLICENSElicense.txtlicense.txttext/plain; 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dc.title.por.fl_str_mv |
Atributos químicos do solo de várzea tropical cultivado com arroz irrigado em razão do manejo do nitrogênio |
dc.title.alternative.eng.fl_str_mv |
Chemical attributes of tropical varzea soil cultivated with rice irrigated for nitrogen management |
title |
Atributos químicos do solo de várzea tropical cultivado com arroz irrigado em razão do manejo do nitrogênio |
spellingShingle |
Atributos químicos do solo de várzea tropical cultivado com arroz irrigado em razão do manejo do nitrogênio Gonçalves, Gustavo de Melo Oliveira Potencial redox Oryza sativa Alterações químicas Química do solo Uso eficiente de nitrogênio Redox potential Oryza sativa Chemical changes Soil chemistry Nitrogen use efficiency AGRONOMIA::CIENCIA DO SOLO |
title_short |
Atributos químicos do solo de várzea tropical cultivado com arroz irrigado em razão do manejo do nitrogênio |
title_full |
Atributos químicos do solo de várzea tropical cultivado com arroz irrigado em razão do manejo do nitrogênio |
title_fullStr |
Atributos químicos do solo de várzea tropical cultivado com arroz irrigado em razão do manejo do nitrogênio |
title_full_unstemmed |
Atributos químicos do solo de várzea tropical cultivado com arroz irrigado em razão do manejo do nitrogênio |
title_sort |
Atributos químicos do solo de várzea tropical cultivado com arroz irrigado em razão do manejo do nitrogênio |
author |
Gonçalves, Gustavo de Melo Oliveira |
author_facet |
Gonçalves, Gustavo de Melo Oliveira |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Brasil, Eliana Paula Fernandes |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/7324619074753727 |
dc.contributor.referee1.fl_str_mv |
Brasil, Eliana Paula Fernandes |
dc.contributor.referee2.fl_str_mv |
Silva, Mellissa Ananias Soler da |
dc.contributor.referee3.fl_str_mv |
Leandro, Wilson Mozena |
dc.contributor.referee4.fl_str_mv |
Santos, Alberto Baêta dos |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/9111930162770542 |
dc.contributor.author.fl_str_mv |
Gonçalves, Gustavo de Melo Oliveira |
contributor_str_mv |
Brasil, Eliana Paula Fernandes Brasil, Eliana Paula Fernandes Silva, Mellissa Ananias Soler da Leandro, Wilson Mozena Santos, Alberto Baêta dos |
dc.subject.por.fl_str_mv |
Potencial redox Oryza sativa Alterações químicas Química do solo Uso eficiente de nitrogênio |
topic |
Potencial redox Oryza sativa Alterações químicas Química do solo Uso eficiente de nitrogênio Redox potential Oryza sativa Chemical changes Soil chemistry Nitrogen use efficiency AGRONOMIA::CIENCIA DO SOLO |
dc.subject.eng.fl_str_mv |
Redox potential Oryza sativa Chemical changes Soil chemistry Nitrogen use efficiency |
dc.subject.cnpq.fl_str_mv |
AGRONOMIA::CIENCIA DO SOLO |
description |
In the last years, due to the government effort, especially in the Tocantins State, there have been significante increase on flooded rice production areas. However, there are few studies about nitrogen sources and doses in that region, which could improve the nitrogen efficiency use and provide higher incomes for farmers. This study aimed to determine the effects of different sources and doses of nitrogen in flooded lowland soils in the pH, redox potential and the concentration of ions in the soil solution in order to obtain the economicallyand environmentally best mineral nitrogen source and dose. The samples were collected in the 2014/2015 season at the Embrapa Rice and Beans Experimental Field - Palmital Farm-, in a Dystric Gleysol. The design was a complete randomized blocks, with four replications, two sources of nitrogen (common urea and slow release urea), three nitrogen rates (30, 70, 150 kg ha-1), and a control, without any N application.Soil solution samples were collected weekly, during the flooded period in rice cultivation, BRS Catiana genotype. The pH analysis and Eh (redoxpotential) were immediately read, just after the soil solution sampling, in the field, and thenHCl (2M) acidified,, and immediately frozen for later analysis of the following ions: Ca, Mg, K, Fe, Zn, Mn, MOS, NO3- and NH4+. The sources used did not affect the release of nutrients dynamics to the soil solution. The anaerobic condition caused changes in the Eh and ions solubility in the soil solution. The doses applied changed Ca and MOS concentrations in solution, and the dose of 150 kg ha-1 N showed the highest values for both. |
publishDate |
2016 |
dc.date.issued.fl_str_mv |
2016-07-29 |
dc.date.accessioned.fl_str_mv |
2017-02-08T10:12:49Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
GONÇALVES, G. M. O. Atributos químicos do solo de várzea tropical cultivado com arroz irrigado em razão do manejo do nitrogênio. 2016. 62 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Goiás, Goiânia, 2016. |
dc.identifier.uri.fl_str_mv |
http://repositorio.bc.ufg.br/tede/handle/tede/6826 |
dc.identifier.dark.fl_str_mv |
ark:/38995/0013000003vt7 |
identifier_str_mv |
GONÇALVES, G. M. O. Atributos químicos do solo de várzea tropical cultivado com arroz irrigado em razão do manejo do nitrogênio. 2016. 62 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Goiás, Goiânia, 2016. ark:/38995/0013000003vt7 |
url |
http://repositorio.bc.ufg.br/tede/handle/tede/6826 |
dc.language.iso.fl_str_mv |
por |
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por |
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842119561133988381 |
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600 600 600 600 |
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4500684695727928426 |
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-5919840527232375671 |
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2075167498588264571 |
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http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
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http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
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dc.publisher.none.fl_str_mv |
Universidade Federal de Goiás |
dc.publisher.program.fl_str_mv |
Programa de Pós-graduação em Agronomia (EAEA) |
dc.publisher.initials.fl_str_mv |
UFG |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Escola de Agronomia e Engenharia de Alimentos - EAEA (RG) |
publisher.none.fl_str_mv |
Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
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