Variability of some physical, chemical and physico-hydrical characteristics in Red Yellow Podzolic soils from Seropédica, RJ
Autor(a) principal: | |
---|---|
Data de Publicação: | 1998 |
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/5028 |
Resumo: | The objective of this study was to evaluate fundamental parameters of the distribution of some physical (particle size, soil and particle densities and porosity percentage); chemical (organic carbon contents) and physico-hydrical properties (water retention and hydric tension) in Red Yellow Podzolic soils, varying their texture from loamy sand to loamy sand clay, in Seropédica, Rio de Janeiro. The variability of some studied characteristics was evaluated according to three levels of analysis (global, by profile and by depth). It was concluded that: the average characteristics of the bulk and particle densities farther than the total porosity were sufficiently sampled in the three considered levels; the particle size and organic carbon were sufficiently sampled at the global analysis level in the whole studied surface, however for the profile analysis and the depth analysis in PVe3, the sample number was insufficient. Data variability of the water retention increased when the water tension level increased for all analysis levels and the variability increased linearly with the increase of the sampling distance of the points. The sandy soils showed higher variability than the other soils, suggesting denser sampling for the physical, chemical and physico-hydrical characteristics than the other soils of clayey texture. The results showed that those properties studied were very well sampled and that the variability of the water retention was positively related to the level of the water tensions. |
id |
EMBRAPA-4_492ea79815522bf56d6a325869f2b238 |
---|---|
oai_identifier_str |
oai:ojs.seer.sct.embrapa.br:article/5028 |
network_acronym_str |
EMBRAPA-4 |
network_name_str |
Pesquisa Agropecuária Brasileira (Online) |
repository_id_str |
|
spelling |
Variability of some physical, chemical and physico-hydrical characteristics in Red Yellow Podzolic soils from Seropédica, RJVariabilidade de características físicas, químicas e físico-hídricas em solo Podzólico Vermelho-Amarelo de Seropédica, RJsoil physic; soil water; humidity retention; field capabilityágua no solo; retenção de umidade; capacidade de campoThe objective of this study was to evaluate fundamental parameters of the distribution of some physical (particle size, soil and particle densities and porosity percentage); chemical (organic carbon contents) and physico-hydrical properties (water retention and hydric tension) in Red Yellow Podzolic soils, varying their texture from loamy sand to loamy sand clay, in Seropédica, Rio de Janeiro. The variability of some studied characteristics was evaluated according to three levels of analysis (global, by profile and by depth). It was concluded that: the average characteristics of the bulk and particle densities farther than the total porosity were sufficiently sampled in the three considered levels; the particle size and organic carbon were sufficiently sampled at the global analysis level in the whole studied surface, however for the profile analysis and the depth analysis in PVe3, the sample number was insufficient. Data variability of the water retention increased when the water tension level increased for all analysis levels and the variability increased linearly with the increase of the sampling distance of the points. The sandy soils showed higher variability than the other soils, suggesting denser sampling for the physical, chemical and physico-hydrical characteristics than the other soils of clayey texture. The results showed that those properties studied were very well sampled and that the variability of the water retention was positively related to the level of the water tensions.O objetivo deste trabalho foi avaliar os parâmetros fundamentais da distribuição das propriedades físicas (granulometria, densidade do solo, densidade de partículas e percentagem de porosidade total), químicas (teores de matéria orgânica); e físico-hídricas (retenção de água e tensão hídrica), em solos Podzólicos Vermelho-Amarelos, com textura variando de areia franca a franco-areno-argilosa, no município de Seropédica, RJ. A variabilidade das características estudadas foi pesquisada segundo três níveis de análise (global, por perfil e por profundidade). Conclui-se que as características médias de densidades do solo e de partículas e porosidade total foram bem amostradas nos três níveis considerados; a granulometria e a matéria orgânica foram adequadamente amostradas na análise global, em toda a área de estudo, todavia, por perfil e por profundidade, no solo PVe3, o número de amostras foi insuficiente. A variabilidade dos dados de retenção de água cresceu com o aumento da tensão hídrica em todos os níveis de análise e cresceu, linearmente, com o aumento da distância de coleta dos pontos amostrais. Os solos arenosos apresentaram maior variabilidade, sugerindo uma amostragem mais densa quanto às características físicas, químicas e físico-hídricas do que os solos de textura mais argilosa. Os resultados demonstraram que essas propriedades foram muito bem amostradas e que a variabilidade da retenção de água foi positivamente relacionada ao nível de tensão de água.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraRonaldo de Macedo, JoséOtonni Filho, Theóphilo Benedictodo Amaral Meneguelli, Neli1998-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/5028Pesquisa Agropecuaria Brasileira; v.33, n.12, dez. 1998; 2043-2053Pesquisa Agropecuária Brasileira; v.33, n.12, dez. 1998; 2043-20531678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/5028/7186info:eu-repo/semantics/openAccess2014-12-17T16:33:34Zoai:ojs.seer.sct.embrapa.br:article/5028Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-12-17T16:33:34Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Variability of some physical, chemical and physico-hydrical characteristics in Red Yellow Podzolic soils from Seropédica, RJ Variabilidade de características físicas, químicas e físico-hídricas em solo Podzólico Vermelho-Amarelo de Seropédica, RJ |
title |
Variability of some physical, chemical and physico-hydrical characteristics in Red Yellow Podzolic soils from Seropédica, RJ |
spellingShingle |
Variability of some physical, chemical and physico-hydrical characteristics in Red Yellow Podzolic soils from Seropédica, RJ Ronaldo de Macedo, José soil physic; soil water; humidity retention; field capability água no solo; retenção de umidade; capacidade de campo |
title_short |
Variability of some physical, chemical and physico-hydrical characteristics in Red Yellow Podzolic soils from Seropédica, RJ |
title_full |
Variability of some physical, chemical and physico-hydrical characteristics in Red Yellow Podzolic soils from Seropédica, RJ |
title_fullStr |
Variability of some physical, chemical and physico-hydrical characteristics in Red Yellow Podzolic soils from Seropédica, RJ |
title_full_unstemmed |
Variability of some physical, chemical and physico-hydrical characteristics in Red Yellow Podzolic soils from Seropédica, RJ |
title_sort |
Variability of some physical, chemical and physico-hydrical characteristics in Red Yellow Podzolic soils from Seropédica, RJ |
author |
Ronaldo de Macedo, José |
author_facet |
Ronaldo de Macedo, José Otonni Filho, Theóphilo Benedicto do Amaral Meneguelli, Neli |
author_role |
author |
author2 |
Otonni Filho, Theóphilo Benedicto do Amaral Meneguelli, Neli |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Ronaldo de Macedo, José Otonni Filho, Theóphilo Benedicto do Amaral Meneguelli, Neli |
dc.subject.por.fl_str_mv |
soil physic; soil water; humidity retention; field capability água no solo; retenção de umidade; capacidade de campo |
topic |
soil physic; soil water; humidity retention; field capability água no solo; retenção de umidade; capacidade de campo |
description |
The objective of this study was to evaluate fundamental parameters of the distribution of some physical (particle size, soil and particle densities and porosity percentage); chemical (organic carbon contents) and physico-hydrical properties (water retention and hydric tension) in Red Yellow Podzolic soils, varying their texture from loamy sand to loamy sand clay, in Seropédica, Rio de Janeiro. The variability of some studied characteristics was evaluated according to three levels of analysis (global, by profile and by depth). It was concluded that: the average characteristics of the bulk and particle densities farther than the total porosity were sufficiently sampled in the three considered levels; the particle size and organic carbon were sufficiently sampled at the global analysis level in the whole studied surface, however for the profile analysis and the depth analysis in PVe3, the sample number was insufficient. Data variability of the water retention increased when the water tension level increased for all analysis levels and the variability increased linearly with the increase of the sampling distance of the points. The sandy soils showed higher variability than the other soils, suggesting denser sampling for the physical, chemical and physico-hydrical characteristics than the other soils of clayey texture. The results showed that those properties studied were very well sampled and that the variability of the water retention was positively related to the level of the water tensions. |
publishDate |
1998 |
dc.date.none.fl_str_mv |
1998-12-01 |
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/5028 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/5028 |
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/5028/7186 |
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.33, n.12, dez. 1998; 2043-2053 Pesquisa Agropecuária Brasileira; v.33, n.12, dez. 1998; 2043-2053 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 |
_version_ |
1793416670884134912 |