Piata palisade grass deferred with two distinct initial heights: luminous environment and tillering dynamics
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Zootecnia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000100006 |
Resumo: | The study was carried out between March 1st and July 1st, 2011, in order to evaluate the tillering pattern of the deferred Piata palisade grass (Brachiaria brizantha cv. Piata). Three sward heights were evaluated in the beginning of the period of deferment: lower (20 cm), medium (30 cm) and higher (40 cm). The experimental design was of completely randomized blocks with three replications. The Piata palisade grass deferred with low initial height presented lower leaf area index, lower light interception and higher leaf angle in relation to the ones deferred with medium and high heights. The advance in the period of deferment increased the leaf area index and the light interception by the sward, in a way that the highest values were recorded in the periods from 91 and 120 days. The leaf angle reduced linearly with the advance in the period of deferment. For basal and aerial tillers, the rates of appearance, mortality and survival of tillers, as well as the balance between appearance and mortality, and the tiller density stability index were not affected by the initial height of the sward. The stability index of the tiller density was lower in the period from 1 to 30 days of deferment in relation to the periods from 31 to 60, from 61 to 90 and from 91 to 120 days. The variation of the initial height of the Piata palisade grass does not influence the tiller density dynamics during the period of deferment. The reduction of the initial height of the Piata palisade grass improves the luminous environment inside the sward, but it does not stimulate the grass tillering during the period of deferment. |
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Piata palisade grass deferred with two distinct initial heights: luminous environment and tillering dynamicsBrachiaria brizanthadeferred grazingecophysiologytillerThe study was carried out between March 1st and July 1st, 2011, in order to evaluate the tillering pattern of the deferred Piata palisade grass (Brachiaria brizantha cv. Piata). Three sward heights were evaluated in the beginning of the period of deferment: lower (20 cm), medium (30 cm) and higher (40 cm). The experimental design was of completely randomized blocks with three replications. The Piata palisade grass deferred with low initial height presented lower leaf area index, lower light interception and higher leaf angle in relation to the ones deferred with medium and high heights. The advance in the period of deferment increased the leaf area index and the light interception by the sward, in a way that the highest values were recorded in the periods from 91 and 120 days. The leaf angle reduced linearly with the advance in the period of deferment. For basal and aerial tillers, the rates of appearance, mortality and survival of tillers, as well as the balance between appearance and mortality, and the tiller density stability index were not affected by the initial height of the sward. The stability index of the tiller density was lower in the period from 1 to 30 days of deferment in relation to the periods from 31 to 60, from 61 to 90 and from 91 to 120 days. The variation of the initial height of the Piata palisade grass does not influence the tiller density dynamics during the period of deferment. The reduction of the initial height of the Piata palisade grass improves the luminous environment inside the sward, but it does not stimulate the grass tillering during the period of deferment.Sociedade Brasileira de Zootecnia2013-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000100006Revista Brasileira de Zootecnia v.42 n.1 2013reponame:Revista Brasileira de Zootecnia (Online)instname:Sociedade Brasileira de Zootecnia (SBZ)instacron:SBZ10.1590/S1516-35982013000100006info:eu-repo/semantics/openAccessSousa,Braulio Maia de LanaSantos,Manoel Eduardo RozalinoVilela,Hélio HenriqueSilveira,Márcia Cristina Teixeira daRocha,Gabriel de OliveiraFreitas,Cássia Aparecida SoaresSilva,Natascha Almeida Marques daNascimento Júnior,Domicio doeng2013-01-14T00:00:00Zoai:scielo:S1516-35982013000100006Revistahttps://www.rbz.org.br/pt-br/https://old.scielo.br/oai/scielo-oai.php||bz@sbz.org.br|| secretariarbz@sbz.org.br1806-92901516-3598opendoar:2013-01-14T00:00Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ)false |
dc.title.none.fl_str_mv |
Piata palisade grass deferred with two distinct initial heights: luminous environment and tillering dynamics |
title |
Piata palisade grass deferred with two distinct initial heights: luminous environment and tillering dynamics |
spellingShingle |
Piata palisade grass deferred with two distinct initial heights: luminous environment and tillering dynamics Sousa,Braulio Maia de Lana Brachiaria brizantha deferred grazing ecophysiology tiller |
title_short |
Piata palisade grass deferred with two distinct initial heights: luminous environment and tillering dynamics |
title_full |
Piata palisade grass deferred with two distinct initial heights: luminous environment and tillering dynamics |
title_fullStr |
Piata palisade grass deferred with two distinct initial heights: luminous environment and tillering dynamics |
title_full_unstemmed |
Piata palisade grass deferred with two distinct initial heights: luminous environment and tillering dynamics |
title_sort |
Piata palisade grass deferred with two distinct initial heights: luminous environment and tillering dynamics |
author |
Sousa,Braulio Maia de Lana |
author_facet |
Sousa,Braulio Maia de Lana Santos,Manoel Eduardo Rozalino Vilela,Hélio Henrique Silveira,Márcia Cristina Teixeira da Rocha,Gabriel de Oliveira Freitas,Cássia Aparecida Soares Silva,Natascha Almeida Marques da Nascimento Júnior,Domicio do |
author_role |
author |
author2 |
Santos,Manoel Eduardo Rozalino Vilela,Hélio Henrique Silveira,Márcia Cristina Teixeira da Rocha,Gabriel de Oliveira Freitas,Cássia Aparecida Soares Silva,Natascha Almeida Marques da Nascimento Júnior,Domicio do |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Sousa,Braulio Maia de Lana Santos,Manoel Eduardo Rozalino Vilela,Hélio Henrique Silveira,Márcia Cristina Teixeira da Rocha,Gabriel de Oliveira Freitas,Cássia Aparecida Soares Silva,Natascha Almeida Marques da Nascimento Júnior,Domicio do |
dc.subject.por.fl_str_mv |
Brachiaria brizantha deferred grazing ecophysiology tiller |
topic |
Brachiaria brizantha deferred grazing ecophysiology tiller |
description |
The study was carried out between March 1st and July 1st, 2011, in order to evaluate the tillering pattern of the deferred Piata palisade grass (Brachiaria brizantha cv. Piata). Three sward heights were evaluated in the beginning of the period of deferment: lower (20 cm), medium (30 cm) and higher (40 cm). The experimental design was of completely randomized blocks with three replications. The Piata palisade grass deferred with low initial height presented lower leaf area index, lower light interception and higher leaf angle in relation to the ones deferred with medium and high heights. The advance in the period of deferment increased the leaf area index and the light interception by the sward, in a way that the highest values were recorded in the periods from 91 and 120 days. The leaf angle reduced linearly with the advance in the period of deferment. For basal and aerial tillers, the rates of appearance, mortality and survival of tillers, as well as the balance between appearance and mortality, and the tiller density stability index were not affected by the initial height of the sward. The stability index of the tiller density was lower in the period from 1 to 30 days of deferment in relation to the periods from 31 to 60, from 61 to 90 and from 91 to 120 days. The variation of the initial height of the Piata palisade grass does not influence the tiller density dynamics during the period of deferment. The reduction of the initial height of the Piata palisade grass improves the luminous environment inside the sward, but it does not stimulate the grass tillering during the period of deferment. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000100006 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000100006 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-35982013000100006 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Zootecnia |
dc.source.none.fl_str_mv |
Revista Brasileira de Zootecnia v.42 n.1 2013 reponame:Revista Brasileira de Zootecnia (Online) instname:Sociedade Brasileira de Zootecnia (SBZ) instacron:SBZ |
instname_str |
Sociedade Brasileira de Zootecnia (SBZ) |
instacron_str |
SBZ |
institution |
SBZ |
reponame_str |
Revista Brasileira de Zootecnia (Online) |
collection |
Revista Brasileira de Zootecnia (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Zootecnia (Online) - Sociedade Brasileira de Zootecnia (SBZ) |
repository.mail.fl_str_mv |
||bz@sbz.org.br|| secretariarbz@sbz.org.br |
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1750318150476365824 |