Light relations and performance of signal grass in silvopastoral system
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta Scientiarum. Animal Sciences (Online) |
Texto Completo: | https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/22398 |
Resumo: | The aim was to evaluate the influence of different spatial arrangements of trees [(3×2)×20 m, (2×2)×9 m and 2×9 m] and sampling sites (center of row spacing and side of tree rows) with regard to the amount and quality of light in the understory of silvopastoral systems and their effects on the production and chemical composition of pasture. The experimental design was a randomized block in a split plot, with three replications. The sampling site affected absolute irradiance, photosynthetic active radiation (PAR), light interception (LI) and red/far red ratio, with higher rates in the center of spacing. There were high and positive correlations between LI/leaf area index (LAI), LI/dry mater (DM) and LAI/DM in the center and LI/LAI and FAR/DM in the side of tree rows. Spatial arrangement (3×2)×20 m had higher rates for plant height (PH), DM and neutral detergent fiber rate, while (2×2)×9 m had high leaf/stem ratio and crude protein rate. In the case of the sampling site, higher rates of PH and DM were reported in the center. Forage composition was not affected by sampling sites. Highest production of DM was obtained in the (3×2)×20 m arrangement and improvements in forage composition were observed in denser arrangements. |
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Light relations and performance of signal grass in silvopastoral systemquality of lightshadingspatial arrangementsUrochloa decumbensThe aim was to evaluate the influence of different spatial arrangements of trees [(3×2)×20 m, (2×2)×9 m and 2×9 m] and sampling sites (center of row spacing and side of tree rows) with regard to the amount and quality of light in the understory of silvopastoral systems and their effects on the production and chemical composition of pasture. The experimental design was a randomized block in a split plot, with three replications. The sampling site affected absolute irradiance, photosynthetic active radiation (PAR), light interception (LI) and red/far red ratio, with higher rates in the center of spacing. There were high and positive correlations between LI/leaf area index (LAI), LI/dry mater (DM) and LAI/DM in the center and LI/LAI and FAR/DM in the side of tree rows. Spatial arrangement (3×2)×20 m had higher rates for plant height (PH), DM and neutral detergent fiber rate, while (2×2)×9 m had high leaf/stem ratio and crude protein rate. In the case of the sampling site, higher rates of PH and DM were reported in the center. Forage composition was not affected by sampling sites. Highest production of DM was obtained in the (3×2)×20 m arrangement and improvements in forage composition were observed in denser arrangements.Editora da Universidade Estadual de Maringá2014-03-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionpesquisa de campo; análise laboratorialapplication/pdfhttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/2239810.4025/actascianimsci.v36i2.22398Acta Scientiarum. Animal Sciences; Vol 36 No 2 (2014); 129-136Acta Scientiarum. Animal Sciences; v. 36 n. 2 (2014); 129-1361807-86721806-2636reponame:Acta Scientiarum. Animal Sciences (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMenghttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/22398/pdf_19Rodrigues, Cynara Oliveira DinizAraújo, Saulo Alberto do CarmoViana, Maria Celuta MachadoRocha, Norberto SilvaBraz, Thiago Gomes dos SantosVillela, Severino Delmar Junqueirainfo:eu-repo/semantics/openAccess2014-05-09T09:53:39Zoai:periodicos.uem.br/ojs:article/22398Revistahttp://www.periodicos.uem.br/ojs/index.php/ActaSciAnimSciPUBhttp://www.periodicos.uem.br/ojs/index.php/ActaSciAnimSci/oaiactaanim@uem.br||actaanim@uem.br|| rev.acta@gmail.com1807-86721806-2636opendoar:2014-05-09T09:53:39Acta Scientiarum. Animal Sciences (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Light relations and performance of signal grass in silvopastoral system |
title |
Light relations and performance of signal grass in silvopastoral system |
spellingShingle |
Light relations and performance of signal grass in silvopastoral system Rodrigues, Cynara Oliveira Diniz quality of light shading spatial arrangements Urochloa decumbens |
title_short |
Light relations and performance of signal grass in silvopastoral system |
title_full |
Light relations and performance of signal grass in silvopastoral system |
title_fullStr |
Light relations and performance of signal grass in silvopastoral system |
title_full_unstemmed |
Light relations and performance of signal grass in silvopastoral system |
title_sort |
Light relations and performance of signal grass in silvopastoral system |
author |
Rodrigues, Cynara Oliveira Diniz |
author_facet |
Rodrigues, Cynara Oliveira Diniz Araújo, Saulo Alberto do Carmo Viana, Maria Celuta Machado Rocha, Norberto Silva Braz, Thiago Gomes dos Santos Villela, Severino Delmar Junqueira |
author_role |
author |
author2 |
Araújo, Saulo Alberto do Carmo Viana, Maria Celuta Machado Rocha, Norberto Silva Braz, Thiago Gomes dos Santos Villela, Severino Delmar Junqueira |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Rodrigues, Cynara Oliveira Diniz Araújo, Saulo Alberto do Carmo Viana, Maria Celuta Machado Rocha, Norberto Silva Braz, Thiago Gomes dos Santos Villela, Severino Delmar Junqueira |
dc.subject.por.fl_str_mv |
quality of light shading spatial arrangements Urochloa decumbens |
topic |
quality of light shading spatial arrangements Urochloa decumbens |
description |
The aim was to evaluate the influence of different spatial arrangements of trees [(3×2)×20 m, (2×2)×9 m and 2×9 m] and sampling sites (center of row spacing and side of tree rows) with regard to the amount and quality of light in the understory of silvopastoral systems and their effects on the production and chemical composition of pasture. The experimental design was a randomized block in a split plot, with three replications. The sampling site affected absolute irradiance, photosynthetic active radiation (PAR), light interception (LI) and red/far red ratio, with higher rates in the center of spacing. There were high and positive correlations between LI/leaf area index (LAI), LI/dry mater (DM) and LAI/DM in the center and LI/LAI and FAR/DM in the side of tree rows. Spatial arrangement (3×2)×20 m had higher rates for plant height (PH), DM and neutral detergent fiber rate, while (2×2)×9 m had high leaf/stem ratio and crude protein rate. In the case of the sampling site, higher rates of PH and DM were reported in the center. Forage composition was not affected by sampling sites. Highest production of DM was obtained in the (3×2)×20 m arrangement and improvements in forage composition were observed in denser arrangements. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-03-17 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion pesquisa de campo; análise laboratorial |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/22398 10.4025/actascianimsci.v36i2.22398 |
url |
https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/22398 |
identifier_str_mv |
10.4025/actascianimsci.v36i2.22398 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/22398/pdf_19 |
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 |
Editora da Universidade Estadual de Maringá |
publisher.none.fl_str_mv |
Editora da Universidade Estadual de Maringá |
dc.source.none.fl_str_mv |
Acta Scientiarum. Animal Sciences; Vol 36 No 2 (2014); 129-136 Acta Scientiarum. Animal Sciences; v. 36 n. 2 (2014); 129-136 1807-8672 1806-2636 reponame:Acta Scientiarum. Animal Sciences (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. Animal Sciences (Online) |
collection |
Acta Scientiarum. Animal Sciences (Online) |
repository.name.fl_str_mv |
Acta Scientiarum. Animal Sciences (Online) - Universidade Estadual de Maringá (UEM) |
repository.mail.fl_str_mv |
actaanim@uem.br||actaanim@uem.br|| rev.acta@gmail.com |
_version_ |
1799315360849068032 |