Correção da acidez do solo em subsuperfície em um latossolo de textura franco-arenosa sob plantio direto

Detalhes bibliográficos
Autor(a) principal: Rossato, Otavio Bagiotto
Data de Publicação: 2008
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Manancial - Repositório Digital da UFSM
Texto Completo: http://repositorio.ufsm.br/handle/1/5475
Resumo: In tropical and subtropical areas, especially, where there is the dry period occurrence, the acidity subsurface (below the 10 cm) it has been pointed as one of the limitation causes to the growth of roots and the agricultural productivity. In the state of Rio Grande do Sul, in the last years, reports exist that areas under no tillage that don't present exchangeable aluminum in the layer of 0-10 cm. However, in the inferior layers, they are found high content of Al and low saturation by bases (Martinazzo, 2006). However, information that allows inferring about the relevance of these conditions in subsurface in the productivity of the cultures doesn t exist. This work was elaborated with the objective of evaluating the occurrence of high saturation with aluminum and low saturation with bases, in subsurface in the no tillage, it can represent a restrictive atmosphere for the growth and productivity of the cultures, as well as to evaluate techniques for correction of the acidity in subsurface. The experiment was implanted in Tupanciretã, RS, in Rhodic Hapludox, of sandy loam texture. The area came being driven under no tillage, and the initial condition, in the layer of 0-10 cm was of pH 5,5, saturation for Al of 0% and saturation of bases of 65%; in the layer of 10-20 cm it presented pH 5,1, saturation for Al of 24% and saturation for bases of 39%. In July of 2005, the following treatments were implanted: without tillage and without limestone; without tillage and with limestone, 1 SMP - pH 6,0; plowing without limestone; plowing with limestone, 1 SMP - pH 6,0; chiseling without limestone; chiseling, with limestone, 1 SMP - pH 6,0; based on the sample of 0-20 cm. The accomplished evaluations were: productivity of grains, matter dries, cycling of nutrients (Ca, Mg, P, K e N) distribution of the system root and economical analysis for the soybean (Glycine max L. Merril) and the corn (Zea mays L.). In soil samples collected to the 9 and 24 months after the implantation of the experiment, in the layers of 0-5; 5-10; 10-15; 15-20; 20-30 cm, they were certain the exchangeable content of Ca, Mg and Al, pH H2O, saturation for bases and saturation for Al, besides the content of P and K and organic carbon. All the variables were submitted to the analysis of the variance and when significant, the averages were compared by the test of Tukey to 5%. The results show that acidity in subsurface (10-20 cm) it was not limit to the productivity of the soybean and of the corn when the superficial layer was in levels recommended by CQFS-RS/SC (2004), what didn't allow the definition in the best way of limestone application under the point of view of productivity of grains and economical viability, however, the limestone incorporation for plowing was the most efficient way of correction of the acidity in subsurface.
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spelling Correção da acidez do solo em subsuperfície em um latossolo de textura franco-arenosa sob plantio diretoCorrection of the acidity of the soil in subsurface in a oxissol of franc-sandy texture under no tillageAcidezSubsuperfíciePlantio diretoModos de preparo do soloCalagemAciditySubsoilNo-tillagePreparation manners soilLimingCNPQ::CIENCIAS AGRARIAS::AGRONOMIAIn tropical and subtropical areas, especially, where there is the dry period occurrence, the acidity subsurface (below the 10 cm) it has been pointed as one of the limitation causes to the growth of roots and the agricultural productivity. In the state of Rio Grande do Sul, in the last years, reports exist that areas under no tillage that don't present exchangeable aluminum in the layer of 0-10 cm. However, in the inferior layers, they are found high content of Al and low saturation by bases (Martinazzo, 2006). However, information that allows inferring about the relevance of these conditions in subsurface in the productivity of the cultures doesn t exist. This work was elaborated with the objective of evaluating the occurrence of high saturation with aluminum and low saturation with bases, in subsurface in the no tillage, it can represent a restrictive atmosphere for the growth and productivity of the cultures, as well as to evaluate techniques for correction of the acidity in subsurface. The experiment was implanted in Tupanciretã, RS, in Rhodic Hapludox, of sandy loam texture. The area came being driven under no tillage, and the initial condition, in the layer of 0-10 cm was of pH 5,5, saturation for Al of 0% and saturation of bases of 65%; in the layer of 10-20 cm it presented pH 5,1, saturation for Al of 24% and saturation for bases of 39%. In July of 2005, the following treatments were implanted: without tillage and without limestone; without tillage and with limestone, 1 SMP - pH 6,0; plowing without limestone; plowing with limestone, 1 SMP - pH 6,0; chiseling without limestone; chiseling, with limestone, 1 SMP - pH 6,0; based on the sample of 0-20 cm. The accomplished evaluations were: productivity of grains, matter dries, cycling of nutrients (Ca, Mg, P, K e N) distribution of the system root and economical analysis for the soybean (Glycine max L. Merril) and the corn (Zea mays L.). In soil samples collected to the 9 and 24 months after the implantation of the experiment, in the layers of 0-5; 5-10; 10-15; 15-20; 20-30 cm, they were certain the exchangeable content of Ca, Mg and Al, pH H2O, saturation for bases and saturation for Al, besides the content of P and K and organic carbon. All the variables were submitted to the analysis of the variance and when significant, the averages were compared by the test of Tukey to 5%. The results show that acidity in subsurface (10-20 cm) it was not limit to the productivity of the soybean and of the corn when the superficial layer was in levels recommended by CQFS-RS/SC (2004), what didn't allow the definition in the best way of limestone application under the point of view of productivity of grains and economical viability, however, the limestone incorporation for plowing was the most efficient way of correction of the acidity in subsurface.Em regiões tropicais e subtropicais, especialmente onde há a ocorrência de veranicos, a acidez subsuperficial (abaixo dos 10 cm) tem sido apontada como uma das causas de limitação ao crescimento de raízes e à produtividade agrícola. No estado do Rio Grande do Sul, nos últimos anos, existem relatos de que muitas áreas sob plantio direto não apresentam alumínio trocável na camada de 0-10 cm, mas nas camadas inferiores, são encontrados elevados teores de Al e baixa saturação por bases. Contudo, não existem informações que permitem inferir sobre a relevância destas condições em subsuperfície na produtividade das culturas. Este trabalho foi elaborado com o objetivo de avaliar se a ocorrência de alta saturação por alumínio e baixa saturação por bases em subsuperfície no plantio direto, pode representar um ambiente restritivo para o crescimento e produtividade das culturas, bem como avaliar técnicas para correção da acidez em subsuperfície. O experimento foi implantado em Tupanciretã, RS, em um Latossolo Vermelho distrófico típico (Embrapa, 2006), de textura franco-arenosa. A área vinha sendo conduzida sob plantio direto, sendo que a condição inicial, na camada de 0-10 cm era de pH 5,5, saturação por Al de 0% e saturação de bases de 65%; na camada de 10-20 cm apresentava pH 5,1, saturação por Al de 24% e saturação por bases de 39%. Em julho de 2005 foram implantados os seguintes tratamentos: sem revolvimento e sem calcário; sem revolvimento e com calcário, 1 SMP - pH 6,0; lavração sem calcário; lavração com calcário, 1 SMP - pH 6,0; escarificação sem calcário; escarificação com calcário, 1 SMP - pH 6,0; baseado na amostra de 0-20 cm. As avaliações realizadas foram: produção de matéria seca, ciclagem de nutrientes (Ca, Mg, P, K e N), produtividade de grãos, distribuição do sistema radicular e análise econômica para a soja e o milho. Em amostras de solo coletadas aos 9 e 24 meses após a implantação do experimento, nas camadas de 0 5, 5 10, 10-15, 15 20 e 20 30 cm foram determinados os teores trocáveis de Ca, Mg e Al, pH H2O, saturação por bases e saturação por Al, além dos teores de P disponível, K trocável e carbono orgânico. Todas as variáveis foram submetidas à análise da variância e quando significativas, as médias foram comparadas pelo teste de Tukey a 5 %. Os resultados mostram que acidez em subsuperfície (10-20 cm) não foi limitante à produtividade da soja e do milho quando a camada superficial (0-10 cm) estava em níveis recomendados pela CQFS-RS/SC (2004), o que não permitiu a definição do melhor modo de aplicação de calcário sob o ponto de vista de produtividade de grãos e viabilidade econômica, porém, a incorporação de calcário por lavração foi o modo mais eficiente de correção da acidez em subsuperfície.Universidade Federal de Santa MariaBRAgronomiaUFSMPrograma de Pós-Graduação em Ciência do SoloCeretta, Carlos Albertohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4780445E3Silva, Leandro Souza dahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4706291Y9Kray, Cláudio Henriquehttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4703055Z9Rossato, Otavio Bagiotto2017-04-052017-04-052008-01-29info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfapplication/pdfROSSATO, Otavio Bagiotto. Correction of the acidity of the soil in subsurface in a oxissol of franc-sandy texture under no tillage. 2008. 92 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Santa Maria, Santa Maria, 2008.http://repositorio.ufsm.br/handle/1/5475porinfo:eu-repo/semantics/openAccessreponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM2017-07-25T14:17:27Zoai:repositorio.ufsm.br:1/5475Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2017-07-25T14:17:27Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)false
dc.title.none.fl_str_mv Correção da acidez do solo em subsuperfície em um latossolo de textura franco-arenosa sob plantio direto
Correction of the acidity of the soil in subsurface in a oxissol of franc-sandy texture under no tillage
title Correção da acidez do solo em subsuperfície em um latossolo de textura franco-arenosa sob plantio direto
spellingShingle Correção da acidez do solo em subsuperfície em um latossolo de textura franco-arenosa sob plantio direto
Rossato, Otavio Bagiotto
Acidez
Subsuperfície
Plantio direto
Modos de preparo do solo
Calagem
Acidity
Subsoil
No-tillage
Preparation manners soil
Liming
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
title_short Correção da acidez do solo em subsuperfície em um latossolo de textura franco-arenosa sob plantio direto
title_full Correção da acidez do solo em subsuperfície em um latossolo de textura franco-arenosa sob plantio direto
title_fullStr Correção da acidez do solo em subsuperfície em um latossolo de textura franco-arenosa sob plantio direto
title_full_unstemmed Correção da acidez do solo em subsuperfície em um latossolo de textura franco-arenosa sob plantio direto
title_sort Correção da acidez do solo em subsuperfície em um latossolo de textura franco-arenosa sob plantio direto
author Rossato, Otavio Bagiotto
author_facet Rossato, Otavio Bagiotto
author_role author
dc.contributor.none.fl_str_mv Ceretta, Carlos Alberto
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4780445E3
Silva, Leandro Souza da
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4706291Y9
Kray, Cláudio Henrique
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4703055Z9
dc.contributor.author.fl_str_mv Rossato, Otavio Bagiotto
dc.subject.por.fl_str_mv Acidez
Subsuperfície
Plantio direto
Modos de preparo do solo
Calagem
Acidity
Subsoil
No-tillage
Preparation manners soil
Liming
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
topic Acidez
Subsuperfície
Plantio direto
Modos de preparo do solo
Calagem
Acidity
Subsoil
No-tillage
Preparation manners soil
Liming
CNPQ::CIENCIAS AGRARIAS::AGRONOMIA
description In tropical and subtropical areas, especially, where there is the dry period occurrence, the acidity subsurface (below the 10 cm) it has been pointed as one of the limitation causes to the growth of roots and the agricultural productivity. In the state of Rio Grande do Sul, in the last years, reports exist that areas under no tillage that don't present exchangeable aluminum in the layer of 0-10 cm. However, in the inferior layers, they are found high content of Al and low saturation by bases (Martinazzo, 2006). However, information that allows inferring about the relevance of these conditions in subsurface in the productivity of the cultures doesn t exist. This work was elaborated with the objective of evaluating the occurrence of high saturation with aluminum and low saturation with bases, in subsurface in the no tillage, it can represent a restrictive atmosphere for the growth and productivity of the cultures, as well as to evaluate techniques for correction of the acidity in subsurface. The experiment was implanted in Tupanciretã, RS, in Rhodic Hapludox, of sandy loam texture. The area came being driven under no tillage, and the initial condition, in the layer of 0-10 cm was of pH 5,5, saturation for Al of 0% and saturation of bases of 65%; in the layer of 10-20 cm it presented pH 5,1, saturation for Al of 24% and saturation for bases of 39%. In July of 2005, the following treatments were implanted: without tillage and without limestone; without tillage and with limestone, 1 SMP - pH 6,0; plowing without limestone; plowing with limestone, 1 SMP - pH 6,0; chiseling without limestone; chiseling, with limestone, 1 SMP - pH 6,0; based on the sample of 0-20 cm. The accomplished evaluations were: productivity of grains, matter dries, cycling of nutrients (Ca, Mg, P, K e N) distribution of the system root and economical analysis for the soybean (Glycine max L. Merril) and the corn (Zea mays L.). In soil samples collected to the 9 and 24 months after the implantation of the experiment, in the layers of 0-5; 5-10; 10-15; 15-20; 20-30 cm, they were certain the exchangeable content of Ca, Mg and Al, pH H2O, saturation for bases and saturation for Al, besides the content of P and K and organic carbon. All the variables were submitted to the analysis of the variance and when significant, the averages were compared by the test of Tukey to 5%. The results show that acidity in subsurface (10-20 cm) it was not limit to the productivity of the soybean and of the corn when the superficial layer was in levels recommended by CQFS-RS/SC (2004), what didn't allow the definition in the best way of limestone application under the point of view of productivity of grains and economical viability, however, the limestone incorporation for plowing was the most efficient way of correction of the acidity in subsurface.
publishDate 2008
dc.date.none.fl_str_mv 2008-01-29
2017-04-05
2017-04-05
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.uri.fl_str_mv ROSSATO, Otavio Bagiotto. Correction of the acidity of the soil in subsurface in a oxissol of franc-sandy texture under no tillage. 2008. 92 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Santa Maria, Santa Maria, 2008.
http://repositorio.ufsm.br/handle/1/5475
identifier_str_mv ROSSATO, Otavio Bagiotto. Correction of the acidity of the soil in subsurface in a oxissol of franc-sandy texture under no tillage. 2008. 92 f. Dissertação (Mestrado em Agronomia) - Universidade Federal de Santa Maria, Santa Maria, 2008.
url http://repositorio.ufsm.br/handle/1/5475
dc.language.iso.fl_str_mv por
language por
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 Federal de Santa Maria
BR
Agronomia
UFSM
Programa de Pós-Graduação em Ciência do Solo
publisher.none.fl_str_mv Universidade Federal de Santa Maria
BR
Agronomia
UFSM
Programa de Pós-Graduação em Ciência do Solo
dc.source.none.fl_str_mv reponame:Manancial - Repositório Digital da UFSM
instname:Universidade Federal de Santa Maria (UFSM)
instacron:UFSM
instname_str Universidade Federal de Santa Maria (UFSM)
instacron_str UFSM
institution UFSM
reponame_str Manancial - Repositório Digital da UFSM
collection Manancial - Repositório Digital da UFSM
repository.name.fl_str_mv Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)
repository.mail.fl_str_mv atendimento.sib@ufsm.br||tedebc@gmail.com
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