Effect of grazing methods and intensities on annual ryegrass under natural reseedling - DOI: 10.4025/actascianimsci.v30i4.3476
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Acta Scientiarum. Animal Sciences (Online) |
Texto Completo: | https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/3476 |
Resumo: | This work was conducted at EEA/UFRGS, in Eldorado do Sul, Rio Grande do Sul state, Brazil (30°05’S e 51°39’W), to evaluate the effects of different grazing intensities and methods on the population dynamics of ryegrass (Lolium multiflorum Lam.) under natural reseedling. Two grazing intensities (moderate and low) were used, under continuous and rotational grazing. The experimental design included randomized blocks with 2x2x3 factorial arrangements (2 grazing intensities x 2 grazing methods x 3 replicates). The following year, the fields were desiccated with herbicides and a soybean plant crop cycle was established during the summer season. Ryegrass tillers from natural reseedling were counted after the soybean harvest. There was no interaction (p > 0.05) between grazing intensities and methods, and the effects for each treatment were independently analyzed. While the grazing methods did not affect natural ryegrass reseedling (p = 0.4636), there were significant effects under different grazing intensities (p = 0.0003). The number of ryegrass tillers established by natural reseedling under low grazing intensity (6,776 tillers m-2) was much higher than under moderate grazing intensity (211 tillers m-2). Grazing intensity is a key factor to maintain ryegrass production in systems based on natural reseedling. |
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Effect of grazing methods and intensities on annual ryegrass under natural reseedling - DOI: 10.4025/actascianimsci.v30i4.3476Composição nutricional de pastagens de capim-Elefante submetido a duas estratégias de manejo em pastejo - DOI: 10.4025/actascianimsci.v30i4.3476integrated crop-livestock systemsfloweringforage allowancemixed systems.Bovinos leiteiroscomposição nutricionalpastagem consorciadasistemas de produçãoZootecniaThis work was conducted at EEA/UFRGS, in Eldorado do Sul, Rio Grande do Sul state, Brazil (30°05’S e 51°39’W), to evaluate the effects of different grazing intensities and methods on the population dynamics of ryegrass (Lolium multiflorum Lam.) under natural reseedling. Two grazing intensities (moderate and low) were used, under continuous and rotational grazing. The experimental design included randomized blocks with 2x2x3 factorial arrangements (2 grazing intensities x 2 grazing methods x 3 replicates). The following year, the fields were desiccated with herbicides and a soybean plant crop cycle was established during the summer season. Ryegrass tillers from natural reseedling were counted after the soybean harvest. There was no interaction (p > 0.05) between grazing intensities and methods, and the effects for each treatment were independently analyzed. While the grazing methods did not affect natural ryegrass reseedling (p = 0.4636), there were significant effects under different grazing intensities (p = 0.0003). The number of ryegrass tillers established by natural reseedling under low grazing intensity (6,776 tillers m-2) was much higher than under moderate grazing intensity (211 tillers m-2). Grazing intensity is a key factor to maintain ryegrass production in systems based on natural reseedling.Realizou-se o trabalho com o objetivo de avaliar o efeito de estratégias de manejo sobre a composição nutricional de pastagens de capim-Elefante. No Tratamento 1, o capim-Elefante foi manejado de acordo com princípios agroecológicos; no Tratamento 2, convencionalmente. Na área correspondente ao sistema agroecológico, o capim-Elefante estava estabelecido em linhas afastadas a 3 m, onde, no espaço entre linhas, no período hibernal, foi implantado azevém e, no período estival, permitiu-se o desenvolvimento de espécies de crescimento espontâneo. Na área referente ao sistema convencional, o capim-Elefante estava estabelecido em linhas espaçadas a 1,4 m. Em cada pastejo, foram coletadas amostras por meio da técnica de simulação de pastejo para determinação das porcentagens de proteína bruta (PB), de fibra em detergente neutro (FDN), da digestibilidade in vitro da matéria seca (DIVMS), da matéria orgânica (DIVMO) e dos nutrientes digestíveis totais (NDT). O delineamento experimental utilizado foi inteiramente casualizado, com dois tratamentos, duas repetições em parcelas subdivididas no tempo. Observou-se resultado superior (p < 0,05) para PB, DIVMS e DIVMO no sistema agroecológico. Para a FDN, foi verificado valor superior (p < 0,05) no sistema convencional. Os melhores resultados de valor nutritivo foram encontrados no período hibernal. Os resultados demonstram que o capim-Elefante apresenta elevado valor nutritivo em ambos os sistemas estudados.Editora da Universidade Estadual de Maringá2009-03-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionpesquisa de campo e análise laboratorialapplication/pdfhttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/347610.4025/actascianimsci.v30i4.3476Acta Scientiarum. Animal Sciences; Vol 30 No 4 (2008); 379-385Acta Scientiarum. Animal Sciences; v. 30 n. 4 (2008); 379-3851807-86721806-2636reponame:Acta Scientiarum. Animal Sciences (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttps://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/3476/3476Meinerz, Gilmar RobertoOlivo, Clair JorgeZiech, Magnos FernandoAgnolin, Carlos AlbertoDullius, Ana PaulaMoraes, Ricardo da Silveirainfo:eu-repo/semantics/openAccess2024-05-17T13:03:53Zoai:periodicos.uem.br/ojs:article/3476Revistahttp://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:2024-05-17T13:03:53Acta Scientiarum. Animal Sciences (Online) - Universidade Estadual de Maringá (UEM)false |
dc.title.none.fl_str_mv |
Effect of grazing methods and intensities on annual ryegrass under natural reseedling - DOI: 10.4025/actascianimsci.v30i4.3476 Composição nutricional de pastagens de capim-Elefante submetido a duas estratégias de manejo em pastejo - DOI: 10.4025/actascianimsci.v30i4.3476 |
title |
Effect of grazing methods and intensities on annual ryegrass under natural reseedling - DOI: 10.4025/actascianimsci.v30i4.3476 |
spellingShingle |
Effect of grazing methods and intensities on annual ryegrass under natural reseedling - DOI: 10.4025/actascianimsci.v30i4.3476 Meinerz, Gilmar Roberto integrated crop-livestock systems flowering forage allowance mixed systems. Bovinos leiteiros composição nutricional pastagem consorciada sistemas de produção Zootecnia |
title_short |
Effect of grazing methods and intensities on annual ryegrass under natural reseedling - DOI: 10.4025/actascianimsci.v30i4.3476 |
title_full |
Effect of grazing methods and intensities on annual ryegrass under natural reseedling - DOI: 10.4025/actascianimsci.v30i4.3476 |
title_fullStr |
Effect of grazing methods and intensities on annual ryegrass under natural reseedling - DOI: 10.4025/actascianimsci.v30i4.3476 |
title_full_unstemmed |
Effect of grazing methods and intensities on annual ryegrass under natural reseedling - DOI: 10.4025/actascianimsci.v30i4.3476 |
title_sort |
Effect of grazing methods and intensities on annual ryegrass under natural reseedling - DOI: 10.4025/actascianimsci.v30i4.3476 |
author |
Meinerz, Gilmar Roberto |
author_facet |
Meinerz, Gilmar Roberto Olivo, Clair Jorge Ziech, Magnos Fernando Agnolin, Carlos Alberto Dullius, Ana Paula Moraes, Ricardo da Silveira |
author_role |
author |
author2 |
Olivo, Clair Jorge Ziech, Magnos Fernando Agnolin, Carlos Alberto Dullius, Ana Paula Moraes, Ricardo da Silveira |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Meinerz, Gilmar Roberto Olivo, Clair Jorge Ziech, Magnos Fernando Agnolin, Carlos Alberto Dullius, Ana Paula Moraes, Ricardo da Silveira |
dc.subject.por.fl_str_mv |
integrated crop-livestock systems flowering forage allowance mixed systems. Bovinos leiteiros composição nutricional pastagem consorciada sistemas de produção Zootecnia |
topic |
integrated crop-livestock systems flowering forage allowance mixed systems. Bovinos leiteiros composição nutricional pastagem consorciada sistemas de produção Zootecnia |
description |
This work was conducted at EEA/UFRGS, in Eldorado do Sul, Rio Grande do Sul state, Brazil (30°05’S e 51°39’W), to evaluate the effects of different grazing intensities and methods on the population dynamics of ryegrass (Lolium multiflorum Lam.) under natural reseedling. Two grazing intensities (moderate and low) were used, under continuous and rotational grazing. The experimental design included randomized blocks with 2x2x3 factorial arrangements (2 grazing intensities x 2 grazing methods x 3 replicates). The following year, the fields were desiccated with herbicides and a soybean plant crop cycle was established during the summer season. Ryegrass tillers from natural reseedling were counted after the soybean harvest. There was no interaction (p > 0.05) between grazing intensities and methods, and the effects for each treatment were independently analyzed. While the grazing methods did not affect natural ryegrass reseedling (p = 0.4636), there were significant effects under different grazing intensities (p = 0.0003). The number of ryegrass tillers established by natural reseedling under low grazing intensity (6,776 tillers m-2) was much higher than under moderate grazing intensity (211 tillers m-2). Grazing intensity is a key factor to maintain ryegrass production in systems based on natural reseedling. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-03-05 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion pesquisa de campo e análise laboratorial |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/3476 10.4025/actascianimsci.v30i4.3476 |
url |
https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/3476 |
identifier_str_mv |
10.4025/actascianimsci.v30i4.3476 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/3476/3476 |
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 30 No 4 (2008); 379-385 Acta Scientiarum. Animal Sciences; v. 30 n. 4 (2008); 379-385 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_ |
1799315358701584384 |