Data/hora: 05/06/2024 12:40:45

Provedor de dados: | 2
País: | Brazil
Título: | Light relations and performance of signal grass in silvopastoral system
Autores: | Rodrigues, Cynara Oliveira Diniz; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Araújo, Saulo Alberto do Carmo; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Viana, Maria Celuta Machado; Empresa de Pesquisa Agropecuária de Minas Gerais; Rocha, Norberto Silva; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Braz, Thiago Gomes dos Santos; Universidade Federal dos Vales do Jequitinhonha e Mucuri; Villela, Severino Delmar Junqueira; Universidade Federal dos Vales do Jequitinhonha e Mucuri.
Data: | 2014-03-17
Ano: | 2014
Palavras-chave: | Pastagem e Forragicultura quality of light; Shading; Spatial arrangements; Urochloa decumbens.
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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/22398

10.4025/actascianimsci.v36i2.22398

Editor: | Editora da Universidade Estadual de Maringá
Relação: | http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/22398/pdf_19
Formato: | application/pdf

Fonte:

Acta Scientiarum. Animal Sciences; v. 36, n. 2 (2014); 129-136

Acta Scientiarum. Animal Sciences; v. 36, n. 2 (2014); 129-136

1807-8672

1806-2636

Fonte:

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DECLARAÇÃO DE ORIGINALIDADE E CESSÃO DE DIREITOS AUTORAIS Declaro que o presente artigo é original, não tendo sido submetido à publicação em qualquer outro periódico nacional ou internacional, quer seja em parte ou em sua totalidade. Declaro, ainda, que uma vez publicado na revista Acta Scientiarum. Animal Sciences, editada pela Universidade Estadual de Maringá, o mesmo jamais será submetido por mim ou por qualquer um dos demais co-autores a qualquer outro meio de divulgação científica. Através deste instrumento, em meu nome e em nome dos demais co-autores, porventura existentes, cedo os direitos autorais do referido artigo à Universidade Estadual de Maringá e declaro estar ciente de que a não observância deste compromisso submeterá o infrator a sanções e penas previstas na Lei de Proteção de Direitos Autorias (Nº9609, de 19/02/98).