Transpiratory rate of eucalypt seedlings in response to water levels in the soil and to association with brachiaria

Detalhes bibliográficos
Autor(a) principal: Silva, Wilson da
Data de Publicação: 2000
Outros Autores: Ferreira, Lino Roberto, Silva, Antônio Alberto da, Firmino, Luís Eduardo
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/5874
Resumo: The effects of Brachiaria brizantha Stapf on the transpiratory rate of Eucalyptus citriodora Hook and E. grandis W. Hill ex Maiden seedlings cultivated in soils with three levels of water under greenhouse conditions were evaluated. Treatments were arranged in a factorial design, with four repetitions (2x3x4): two species (E. citriodora and E. grandis), three levels of water (20%, 23% and 26%), and four populations of B. brizantha (0, 1, 2 and 3 plants per vase). Water level in the vases was maintained constant until the last experiment evaluation, at 70 days after seedlings transplant. Measurements were done with an infrared gas analyzer (IRGA). Independently of water level in the soil, Brachiaria brizantha demonstrated its competitiveness for E. citriodora and E. grandis initial growing, by transpiratory rate reduction. E. citriodora or E. grandis seedlings upper third leaves presented higher transpiratory rate than mean and lower third leaves, independently of B. brizantha population and water level in the soil.
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spelling Transpiratory rate of eucalypt seedlings in response to water levels in the soil and to association with brachiariaTaxa transpiratória de mudas de eucalipto em resposta a níveis de água no solo e à convivência com braquiáriaEucalyptus citriodora; Eucalyptus grandis; Brachiaria brizantha; moisture; plant development; plant interferenceEucalyptus citriodora; Eucalyptus grandis; Brachiaria brizantha; umidade; desenvolvimento da planta; interferência das plantasThe effects of Brachiaria brizantha Stapf on the transpiratory rate of Eucalyptus citriodora Hook and E. grandis W. Hill ex Maiden seedlings cultivated in soils with three levels of water under greenhouse conditions were evaluated. Treatments were arranged in a factorial design, with four repetitions (2x3x4): two species (E. citriodora and E. grandis), three levels of water (20%, 23% and 26%), and four populations of B. brizantha (0, 1, 2 and 3 plants per vase). Water level in the vases was maintained constant until the last experiment evaluation, at 70 days after seedlings transplant. Measurements were done with an infrared gas analyzer (IRGA). Independently of water level in the soil, Brachiaria brizantha demonstrated its competitiveness for E. citriodora and E. grandis initial growing, by transpiratory rate reduction. E. citriodora or E. grandis seedlings upper third leaves presented higher transpiratory rate than mean and lower third leaves, independently of B. brizantha population and water level in the soil.Objetivou-se avaliar a interferência de Brachiaria brizantha Stapf sobre a taxa transpiratória de mudas de Eucalyptus citriodora Hook e Eucalyptus grandis W. Hill ex Maiden, cultivadas em solos com diferentes níveis de água, em condições de casa de vegetação. O delineamento utilizado foi o de blocos ao acaso, com quatro repetições, em arranjo fatorial (2x3x4): duas espécies (E. citriodora e E. grandis), três níveis de água (20%, 23% e 26%) e quatro populações de B. brizantha (0, 1, 2 e 3 plantas/vaso). O nível de água nos vasos foi mantido constante, até a última avaliação do experimento, 70 dias após o transplante das mudas. A mensuração da taxa transpiratória foi realizada com um analisador de gás infravermelho. Brachiaria brizantha, independentemente do nível de água no solo, demonstrou ser competitiva no crescimento inicial de E. citriodora ou E. grandis, pela redução da taxa transpiratória. As folhas do terço superior das mudas de E. citriodora ou de E. grandis apresentaram maior taxa transpiratória que as folhas dos terços mediano e inferior, independentemente da população de B. brizantha e do nível de água no solo.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraSilva, Wilson daFerreira, Lino RobertoSilva, Antônio Alberto daFirmino, Luís Eduardo2000-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/5874Pesquisa Agropecuaria Brasileira; v.35, n.5, maio 2000; 923-928Pesquisa Agropecuária Brasileira; v.35, n.5, maio 2000; 923-9281678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/5874/2978info:eu-repo/semantics/openAccess2010-07-28T18:05:54Zoai:ojs.seer.sct.embrapa.br:article/5874Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2010-07-28T18:05:54Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Transpiratory rate of eucalypt seedlings in response to water levels in the soil and to association with brachiaria
Taxa transpiratória de mudas de eucalipto em resposta a níveis de água no solo e à convivência com braquiária
title Transpiratory rate of eucalypt seedlings in response to water levels in the soil and to association with brachiaria
spellingShingle Transpiratory rate of eucalypt seedlings in response to water levels in the soil and to association with brachiaria
Silva, Wilson da
Eucalyptus citriodora; Eucalyptus grandis; Brachiaria brizantha; moisture; plant development; plant interference
Eucalyptus citriodora; Eucalyptus grandis; Brachiaria brizantha; umidade; desenvolvimento da planta; interferência das plantas
title_short Transpiratory rate of eucalypt seedlings in response to water levels in the soil and to association with brachiaria
title_full Transpiratory rate of eucalypt seedlings in response to water levels in the soil and to association with brachiaria
title_fullStr Transpiratory rate of eucalypt seedlings in response to water levels in the soil and to association with brachiaria
title_full_unstemmed Transpiratory rate of eucalypt seedlings in response to water levels in the soil and to association with brachiaria
title_sort Transpiratory rate of eucalypt seedlings in response to water levels in the soil and to association with brachiaria
author Silva, Wilson da
author_facet Silva, Wilson da
Ferreira, Lino Roberto
Silva, Antônio Alberto da
Firmino, Luís Eduardo
author_role author
author2 Ferreira, Lino Roberto
Silva, Antônio Alberto da
Firmino, Luís Eduardo
author2_role author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Silva, Wilson da
Ferreira, Lino Roberto
Silva, Antônio Alberto da
Firmino, Luís Eduardo
dc.subject.por.fl_str_mv Eucalyptus citriodora; Eucalyptus grandis; Brachiaria brizantha; moisture; plant development; plant interference
Eucalyptus citriodora; Eucalyptus grandis; Brachiaria brizantha; umidade; desenvolvimento da planta; interferência das plantas
topic Eucalyptus citriodora; Eucalyptus grandis; Brachiaria brizantha; moisture; plant development; plant interference
Eucalyptus citriodora; Eucalyptus grandis; Brachiaria brizantha; umidade; desenvolvimento da planta; interferência das plantas
description The effects of Brachiaria brizantha Stapf on the transpiratory rate of Eucalyptus citriodora Hook and E. grandis W. Hill ex Maiden seedlings cultivated in soils with three levels of water under greenhouse conditions were evaluated. Treatments were arranged in a factorial design, with four repetitions (2x3x4): two species (E. citriodora and E. grandis), three levels of water (20%, 23% and 26%), and four populations of B. brizantha (0, 1, 2 and 3 plants per vase). Water level in the vases was maintained constant until the last experiment evaluation, at 70 days after seedlings transplant. Measurements were done with an infrared gas analyzer (IRGA). Independently of water level in the soil, Brachiaria brizantha demonstrated its competitiveness for E. citriodora and E. grandis initial growing, by transpiratory rate reduction. E. citriodora or E. grandis seedlings upper third leaves presented higher transpiratory rate than mean and lower third leaves, independently of B. brizantha population and water level in the soil.
publishDate 2000
dc.date.none.fl_str_mv 2000-05-01
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/5874
url https://seer.sct.embrapa.br/index.php/pab/article/view/5874
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/5874/2978
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.35, n.5, maio 2000; 923-928
Pesquisa Agropecuária Brasileira; v.35, n.5, maio 2000; 923-928
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
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