Discriminação de argissolos e avaliação da estabilidade de agregados por vias seca e úmida em diferentes sistemas de uso e manejo

Detalhes bibliográficos
Autor(a) principal: Perusi, Maria Cristina [UNESP]
Data de Publicação: 2005
Tipo de documento: Tese
Idioma: por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://hdl.handle.net/11449/101956
Resumo: In order to discriminate ARGISSOLOS and to evaluate aggregates stability by dry and humid ways under different use and management systems, it was studied soil profiles under agricultural and pasture for more than twelve five years on the following system: six years with annual crop rotation in areas that had been pasture for the same time period and forest, for comparison purposes. This study was done in a agricultural farm in the Anhumas county, São Paulo state, Brazil, where the predominant soil class - ARGISSOLO - are representative of the region. Stages to achieve the objectives: a) not deformed and deformed samples collection to perform chemical and physical analysis; b) determination of the aggregate percentage by dry and humid ways; c) computation of the weighted mean diameter of the aggregates (WMDA); d) soils classification; e) statistical analysis: variance analysis and Tuckey's test for average, at 5 % of probability. Main conclusions: soil classification; the organic matter content of the A horizon of the soil under forest is 64 % more than the soil under pasture e 79 % more than the soil under annual crop; the flocculation degree and amount of the clay fraction of this same horizon is 31 % more than the soil under pasture e 39 % more than the soil under annual crop; the weighted mean diameter of the aggregates obtained by dry (D) and (H) humid ways of the A horizon and its mean value for the soils decrease in the following sequence: PVAd - forest > PVe - pasture > PVd - annual culture, respectively, with the following values: 1.33560 and 1.445496 (D), 2.81114 and 2.351380 (H); 0.66748 and 1.011830 (D), 2.79642 and 1.624250 (H); 0.32468 and 0.993775 (D), 1.25808 and 0.983135 mm (H); the weighted mean diameters of the aggregates of the A horizon - obtained by dry (D) and humid (H) ways - decreased 50 % and 1 % in the soil under pasture... (Complete abstract click electronic access below)
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spelling Discriminação de argissolos e avaliação da estabilidade de agregados por vias seca e úmida em diferentes sistemas de uso e manejoSolos - ManejoSolo - UsoSoil - Use and managementSoil - StructureIn order to discriminate ARGISSOLOS and to evaluate aggregates stability by dry and humid ways under different use and management systems, it was studied soil profiles under agricultural and pasture for more than twelve five years on the following system: six years with annual crop rotation in areas that had been pasture for the same time period and forest, for comparison purposes. This study was done in a agricultural farm in the Anhumas county, São Paulo state, Brazil, where the predominant soil class - ARGISSOLO - are representative of the region. Stages to achieve the objectives: a) not deformed and deformed samples collection to perform chemical and physical analysis; b) determination of the aggregate percentage by dry and humid ways; c) computation of the weighted mean diameter of the aggregates (WMDA); d) soils classification; e) statistical analysis: variance analysis and Tuckey's test for average, at 5 % of probability. Main conclusions: soil classification; the organic matter content of the A horizon of the soil under forest is 64 % more than the soil under pasture e 79 % more than the soil under annual crop; the flocculation degree and amount of the clay fraction of this same horizon is 31 % more than the soil under pasture e 39 % more than the soil under annual crop; the weighted mean diameter of the aggregates obtained by dry (D) and (H) humid ways of the A horizon and its mean value for the soils decrease in the following sequence: PVAd - forest > PVe - pasture > PVd - annual culture, respectively, with the following values: 1.33560 and 1.445496 (D), 2.81114 and 2.351380 (H); 0.66748 and 1.011830 (D), 2.79642 and 1.624250 (H); 0.32468 and 0.993775 (D), 1.25808 and 0.983135 mm (H); the weighted mean diameters of the aggregates of the A horizon - obtained by dry (D) and humid (H) ways - decreased 50 % and 1 % in the soil under pasture... (Complete abstract click electronic access below)Universidade Estadual Paulista (Unesp)Carvalho, Wolmar Apparecida [UNESP]Universidade Estadual Paulista (Unesp)Perusi, Maria Cristina [UNESP]2014-06-11T19:31:39Z2014-06-11T19:31:39Z2005-09-20info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisxi, 103 f. : il., tabs.application/pdfPERUSI, Maria Cristina. Discriminação de argissolos e avaliação da estabilidade de agregados por vias seca e úmida em diferentes sistemas de uso e manejo. 2005. xi, 103 f. Tese (doutorado) - Universidade Estadual Paulista, Faculdade de Ciências Agronômicas, 2005.http://hdl.handle.net/11449/101956000331910perusi_mc_dr_botfca.pdf33004064021P7Alephreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporinfo:eu-repo/semantics/openAccess2024-05-02T20:23:58Zoai:repositorio.unesp.br:11449/101956Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:14:15.012261Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Discriminação de argissolos e avaliação da estabilidade de agregados por vias seca e úmida em diferentes sistemas de uso e manejo
title Discriminação de argissolos e avaliação da estabilidade de agregados por vias seca e úmida em diferentes sistemas de uso e manejo
spellingShingle Discriminação de argissolos e avaliação da estabilidade de agregados por vias seca e úmida em diferentes sistemas de uso e manejo
Perusi, Maria Cristina [UNESP]
Solos - Manejo
Solo - Uso
Soil - Use and management
Soil - Structure
title_short Discriminação de argissolos e avaliação da estabilidade de agregados por vias seca e úmida em diferentes sistemas de uso e manejo
title_full Discriminação de argissolos e avaliação da estabilidade de agregados por vias seca e úmida em diferentes sistemas de uso e manejo
title_fullStr Discriminação de argissolos e avaliação da estabilidade de agregados por vias seca e úmida em diferentes sistemas de uso e manejo
title_full_unstemmed Discriminação de argissolos e avaliação da estabilidade de agregados por vias seca e úmida em diferentes sistemas de uso e manejo
title_sort Discriminação de argissolos e avaliação da estabilidade de agregados por vias seca e úmida em diferentes sistemas de uso e manejo
author Perusi, Maria Cristina [UNESP]
author_facet Perusi, Maria Cristina [UNESP]
author_role author
dc.contributor.none.fl_str_mv Carvalho, Wolmar Apparecida [UNESP]
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Perusi, Maria Cristina [UNESP]
dc.subject.por.fl_str_mv Solos - Manejo
Solo - Uso
Soil - Use and management
Soil - Structure
topic Solos - Manejo
Solo - Uso
Soil - Use and management
Soil - Structure
description In order to discriminate ARGISSOLOS and to evaluate aggregates stability by dry and humid ways under different use and management systems, it was studied soil profiles under agricultural and pasture for more than twelve five years on the following system: six years with annual crop rotation in areas that had been pasture for the same time period and forest, for comparison purposes. This study was done in a agricultural farm in the Anhumas county, São Paulo state, Brazil, where the predominant soil class - ARGISSOLO - are representative of the region. Stages to achieve the objectives: a) not deformed and deformed samples collection to perform chemical and physical analysis; b) determination of the aggregate percentage by dry and humid ways; c) computation of the weighted mean diameter of the aggregates (WMDA); d) soils classification; e) statistical analysis: variance analysis and Tuckey's test for average, at 5 % of probability. Main conclusions: soil classification; the organic matter content of the A horizon of the soil under forest is 64 % more than the soil under pasture e 79 % more than the soil under annual crop; the flocculation degree and amount of the clay fraction of this same horizon is 31 % more than the soil under pasture e 39 % more than the soil under annual crop; the weighted mean diameter of the aggregates obtained by dry (D) and (H) humid ways of the A horizon and its mean value for the soils decrease in the following sequence: PVAd - forest > PVe - pasture > PVd - annual culture, respectively, with the following values: 1.33560 and 1.445496 (D), 2.81114 and 2.351380 (H); 0.66748 and 1.011830 (D), 2.79642 and 1.624250 (H); 0.32468 and 0.993775 (D), 1.25808 and 0.983135 mm (H); the weighted mean diameters of the aggregates of the A horizon - obtained by dry (D) and humid (H) ways - decreased 50 % and 1 % in the soil under pasture... (Complete abstract click electronic access below)
publishDate 2005
dc.date.none.fl_str_mv 2005-09-20
2014-06-11T19:31:39Z
2014-06-11T19:31:39Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
status_str publishedVersion
dc.identifier.none.fl_str_mv
dc.identifier.uri.fl_str_mv PERUSI, Maria Cristina. Discriminação de argissolos e avaliação da estabilidade de agregados por vias seca e úmida em diferentes sistemas de uso e manejo. 2005. xi, 103 f. Tese (doutorado) - Universidade Estadual Paulista, Faculdade de Ciências Agronômicas, 2005.
http://hdl.handle.net/11449/101956
000331910
perusi_mc_dr_botfca.pdf
33004064021P7
identifier_str_mv
PERUSI, Maria Cristina. Discriminação de argissolos e avaliação da estabilidade de agregados por vias seca e úmida em diferentes sistemas de uso e manejo. 2005. xi, 103 f. Tese (doutorado) - Universidade Estadual Paulista, Faculdade de Ciências Agronômicas, 2005.
000331910
perusi_mc_dr_botfca.pdf
33004064021P7
url http://hdl.handle.net/11449/101956
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 xi, 103 f. : il., tabs.
application/pdf
dc.publisher.none.fl_str_mv Universidade Estadual Paulista (Unesp)
publisher.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.source.none.fl_str_mv Aleph
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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