Data/hora: 06/06/2024 13:20:46

Biblioteca(s): | Embrapa Agrossilvipastoril; Embrapa Pecuária Sudeste.
Data corrente: | 08/06/2020
Data da última atualização: | 29/09/2020
Autoria: | GOMES, F. J.; PEDREIRA, B. C. e; SANTOS, P. M.; BOSI, C.; PEDREIRA, C. G. S.
Afiliação: | FAGNER JUNIOR GOMES, USP, ESALQ, Piracicaba-SP; BRUNO CARNEIRO E PEDREIRA, CPAMT; PATRICIA MENEZES SANTOS, CPPSE; CRISTIAM BOSI, USP, ESALQ, Piracicaba-SP; CARLOS GUILHERME SILVEIRA PEDREIRA, USP, ESALQ, Piracicaba-SP.
Título: | Shading effects on canopy and tillering characteristics of continuously stocked palisadegrass in a silvopastoral system in the Amazon biome.
Ano de publicação: | 2020
Fonte/Imprenta: | Grass and Forage Science, v. 75, n. 3, p. 279-290, 2020.
ISSN: | 1365-2494
DOI: | https://doi.org/10.1111/gfs.12478
Idioma: | Inglês
Conteúdo: | In silvopastoral (SP) systems, forage responses depend on the microenvironment in which the plants develop. Our objective was to evaluate canopy and tillering characteristics of shaded 'Marandu' palisadegrass [Brachiaria brizantha (Hochst A Rich) Stapf, syn. Urochloa brizantha] under continuous stocking in a SP system. Treatments were one full sun (FS) and three shaded systems (silvopasture, SP) corresponding to distances from tree groves: 7.5 m north (SP1), and 15 m (SP2) and 7.5 m south (SP3) studied during two rainy seasons (Year 1 and Year 2). The tree in the SP system was Eucalyptus urograndis (hybrid of Eucalyptus grandis W. Hill ex Maiden × Eucalyptus urophylla S. T. Blake). The photosynthetic active radiation was greater in FS (923 &#956;mol m&#8722;2s &#8722;1), followed by SP2 (811 &#956;mol m&#8722;2s &#8722;1), SP1 (727 &#956;mol m&#8722;2s &#8722;1) and SP3 (673 &#956;mol m&#8722;2s &#8722;1). Forage accumulation in FS was 15% greater than the mean of SP1, SP2 and SP3 (10,663 kg DM/ha). There was no difference in net accumulation of leaf, stem and dead material, averaging 3,302, 3,420 and 4,063 kg DM/ha respectively. Leaf accumulation and accumulation rate were greater in Year 2, and leaf accumulation rate was similar among treatments (19 kg DM ha&#8722;1 day&#8722;1). Leaf proportion increased 14% from Year 1 to Year 2. Specific leaf area was greater for treatments SP1 and SP3 (193 cm2/g). Tiller population density was similar across treatments in Year 1. Shaded palisadegrass maintains leaf productivity similar to FS under continuous stocking in an SP system.
Palavras-Chave: | Livestock forest integration; Mato Grosso; Productive planning; Silvopasture; Sinop-MT; Sustainable intensification.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Agrossilvipastoril (CPAMT)

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