Net photosynthetic rate performance of Eucalyptus citriodora Hook and E. grandis W. Hill in response to different levels of water and associated with Brachiaria brizantha Stapf
Autor(a) principal: | |
---|---|
Data de Publicação: | 2008 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Acta Scientiarum. Agronomy (Online) |
Texto Completo: | http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/2576 |
Resumo: | The effects of Brachiaria brizantha (Poaceae) interference on the net photosynthetic rate (A) of Eucalyptus citriodora and E. grandis (Myrtaceae) seedlings cultivated in soils with three levels of water under greenhouse conditions are provided. Treatments were arranged in a factorial design, with four repetitions 2x3x4: two species of eucalyptus (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 evaluation of final experiment 70 days after transplant of seedlings. Moisture control was done by a microtensiometer and daily weighting of vases with three replenishments of evapotranspired water. Measurements were executed with an infrared gas analyser (IRGA). In spite of any water level in the soil, B. brizantha demonstrated its competitiveness for E. citriodora and E. grandis initial growing, by A reduction. Upper third part of leaves of E. citriodora or E. grandis seedlings presented higher A than mean and lower third section, independently of B. brizantha population and water level in the soil |
id |
UEM-5_edc956eb1bac95f253b5fc25350a5b1f |
---|---|
oai_identifier_str |
oai:periodicos.uem.br/ojs:article/2576 |
network_acronym_str |
UEM-5 |
network_name_str |
Acta Scientiarum. Agronomy (Online) |
repository_id_str |
|
spelling |
Net photosynthetic rate performance of Eucalyptus citriodora Hook and E. grandis W. Hill in response to different levels of water and associated with Brachiaria brizantha StapfTaxa fotossintética líquida de Eucalyptus citriodora Hook e E. grandis W. Hill em resposta à diferentes níveis de água no solo e associação com Brachiaria brizantha StapfEucalyptusBrachiaria brizanthanível de água no solotaxa fotossintética5.00.00.00-4 Ciências AgráriasThe effects of Brachiaria brizantha (Poaceae) interference on the net photosynthetic rate (A) of Eucalyptus citriodora and E. grandis (Myrtaceae) seedlings cultivated in soils with three levels of water under greenhouse conditions are provided. Treatments were arranged in a factorial design, with four repetitions 2x3x4: two species of eucalyptus (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 evaluation of final experiment 70 days after transplant of seedlings. Moisture control was done by a microtensiometer and daily weighting of vases with three replenishments of evapotranspired water. Measurements were executed with an infrared gas analyser (IRGA). In spite of any water level in the soil, B. brizantha demonstrated its competitiveness for E. citriodora and E. grandis initial growing, by A reduction. Upper third part of leaves of E. citriodora or E. grandis seedlings presented higher A than mean and lower third section, independently of B. brizantha population and water level in the soilObjetivou-se avaliar os efeitos da interferência de Brachiaria brizantha (Poaceae) sobre a taxa fotossintética líquida (A) de mudas de Eucalyptus citriodora e E. grandis (Myrtaceae), 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 de eucalipto (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 por vaso). O controle do nível de água foi feito por microtensiômetro e pesagens diárias dos vasos, com reposição da água evapotranspirada e mantido praticamente de forma constante até a última avaliação do experimento, aos 70 dias após o transplante das mudas. A mensuração de A foi realizada com um analisador de gás a infravermelho (IRGA). Independentemente do nível de água no solo, B. brizantha demonstrou ser competitiva no crescimento inicial de E. citriodora ou E. grandis, pela redução de A. As folhas do terço superior das mudas de E. citriodora ou de E. grandis apresentaram maior A que as folhas dos terços mediano e inferior, independentemente da população de B. brizantha e do nível de água no soloUniversidade Estadual de Maringá2008-05-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/257610.4025/actasciagron.v23i0.2576Acta Scientiarum. Agronomy; Vol 23 (2001); 1205-1209Acta Scientiarum. Agronomy; v. 23 (2001); 1205-12091807-86211679-9275reponame:Acta Scientiarum. Agronomy (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/2576/2061Silva, Wilson daSediyama, TocioSilva, Antônio Alberto daSouza, Adailson Pereira deinfo:eu-repo/semantics/openAccess2022-11-23T18:37:51Zoai:periodicos.uem.br/ojs:article/2576Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgronPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/oaiactaagron@uem.br||actaagron@uem.br|| edamasio@uem.br1807-86211679-9275opendoar:2022-11-23T18:37:51Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Net photosynthetic rate performance of Eucalyptus citriodora Hook and E. grandis W. Hill in response to different levels of water and associated with Brachiaria brizantha Stapf Taxa fotossintética líquida de Eucalyptus citriodora Hook e E. grandis W. Hill em resposta à diferentes níveis de água no solo e associação com Brachiaria brizantha Stapf |
title |
Net photosynthetic rate performance of Eucalyptus citriodora Hook and E. grandis W. Hill in response to different levels of water and associated with Brachiaria brizantha Stapf |
spellingShingle |
Net photosynthetic rate performance of Eucalyptus citriodora Hook and E. grandis W. Hill in response to different levels of water and associated with Brachiaria brizantha Stapf Silva, Wilson da Eucalyptus Brachiaria brizantha nível de água no solo taxa fotossintética 5.00.00.00-4 Ciências Agrárias |
title_short |
Net photosynthetic rate performance of Eucalyptus citriodora Hook and E. grandis W. Hill in response to different levels of water and associated with Brachiaria brizantha Stapf |
title_full |
Net photosynthetic rate performance of Eucalyptus citriodora Hook and E. grandis W. Hill in response to different levels of water and associated with Brachiaria brizantha Stapf |
title_fullStr |
Net photosynthetic rate performance of Eucalyptus citriodora Hook and E. grandis W. Hill in response to different levels of water and associated with Brachiaria brizantha Stapf |
title_full_unstemmed |
Net photosynthetic rate performance of Eucalyptus citriodora Hook and E. grandis W. Hill in response to different levels of water and associated with Brachiaria brizantha Stapf |
title_sort |
Net photosynthetic rate performance of Eucalyptus citriodora Hook and E. grandis W. Hill in response to different levels of water and associated with Brachiaria brizantha Stapf |
author |
Silva, Wilson da |
author_facet |
Silva, Wilson da Sediyama, Tocio Silva, Antônio Alberto da Souza, Adailson Pereira de |
author_role |
author |
author2 |
Sediyama, Tocio Silva, Antônio Alberto da Souza, Adailson Pereira de |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Silva, Wilson da Sediyama, Tocio Silva, Antônio Alberto da Souza, Adailson Pereira de |
dc.subject.por.fl_str_mv |
Eucalyptus Brachiaria brizantha nível de água no solo taxa fotossintética 5.00.00.00-4 Ciências Agrárias |
topic |
Eucalyptus Brachiaria brizantha nível de água no solo taxa fotossintética 5.00.00.00-4 Ciências Agrárias |
description |
The effects of Brachiaria brizantha (Poaceae) interference on the net photosynthetic rate (A) of Eucalyptus citriodora and E. grandis (Myrtaceae) seedlings cultivated in soils with three levels of water under greenhouse conditions are provided. Treatments were arranged in a factorial design, with four repetitions 2x3x4: two species of eucalyptus (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 evaluation of final experiment 70 days after transplant of seedlings. Moisture control was done by a microtensiometer and daily weighting of vases with three replenishments of evapotranspired water. Measurements were executed with an infrared gas analyser (IRGA). In spite of any water level in the soil, B. brizantha demonstrated its competitiveness for E. citriodora and E. grandis initial growing, by A reduction. Upper third part of leaves of E. citriodora or E. grandis seedlings presented higher A than mean and lower third section, independently of B. brizantha population and water level in the soil |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-05-09 |
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 |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/2576 10.4025/actasciagron.v23i0.2576 |
url |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/2576 |
identifier_str_mv |
10.4025/actasciagron.v23i0.2576 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/2576/2061 |
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 |
Universidade Estadual de Maringá |
publisher.none.fl_str_mv |
Universidade Estadual de Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Agronomy; Vol 23 (2001); 1205-1209 Acta Scientiarum. Agronomy; v. 23 (2001); 1205-1209 1807-8621 1679-9275 reponame:Acta Scientiarum. Agronomy (Online) instname:Universidade Estadual de Maringá (UEM) instacron:UEM |
instname_str |
Universidade Estadual de Maringá (UEM) |
instacron_str |
UEM |
institution |
UEM |
reponame_str |
Acta Scientiarum. Agronomy (Online) |
collection |
Acta Scientiarum. Agronomy (Online) |
repository.name.fl_str_mv |
Acta Scientiarum. Agronomy (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
actaagron@uem.br||actaagron@uem.br|| edamasio@uem.br |
_version_ |
1799305905782652928 |