Effect of grazing methods and intensities on annual ryegrass under natural reseedling - DOI: 10.4025/actascianimsci.v30i4.3476

Detalhes bibliográficos
Autor(a) principal: Meinerz, Gilmar Roberto
Data de Publicação: 2009
Outros Autores: Olivo, Clair Jorge, Ziech, Magnos Fernando, Agnolin, Carlos Alberto, Dullius, Ana Paula, Moraes, Ricardo da Silveira
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.
id UEM-7_dcb52cb7dc7ce682d0deeea18b5b0433
oai_identifier_str oai:periodicos.uem.br/ojs:article/3476
network_acronym_str UEM-7
network_name_str Acta Scientiarum. Animal Sciences (Online)
repository_id_str
spelling 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