Your browser doesn't support javascript.
loading
Canopy structure and forage nutritive value of elephantgrass subjected to different stocking rate and N fertilization in the "Mata Seca" ecoregion of Pernambuco
Dourado, Diego Loiola; Dubeux Junior, José Carlos Batista; Mello, Alexandre Carneiro Leão de; Santos, Mércia Virginia Ferreira dos; Lira, Mário de Andrade; Freitas, Erinaldo Viana de; Apolinário, Valéria Xavier de Oliveira; Santos, Erick Rodrigo da Silva.
Afiliação
  • Dourado, Diego Loiola; s.af
  • Dubeux Junior, José Carlos Batista; University of Florida. North Florida Research and Education Center. Marianna. US
  • Mello, Alexandre Carneiro Leão de; Universidade Federal Rural de Pernambuco. Departamento de Zootecnia. Recife. BR
  • Santos, Mércia Virginia Ferreira dos; Universidade Federal Rural de Pernambuco. Departamento de Zootecnia. Recife. BR
  • Lira, Mário de Andrade; Instituto Agronômico de Pernambuco. Recife. BR
  • Freitas, Erinaldo Viana de; Instituto Agronômico de Pernambuco. Recife. BR
  • Apolinário, Valéria Xavier de Oliveira; Universidade Estadual do Maranhão. Departamento de Zootecnia. São Luís. BR
  • Santos, Erick Rodrigo da Silva; University of Florida. North Florida Research and Education Center. Marianna. US
Rev. Bras. Zootec. (Online) ; 48: e20180134, 2019. graf, tab
Article em En | VETINDEX | ID: biblio-1510308
Biblioteca responsável: BR68.1
ABSTRACT
The objective was to evaluate the effect of three stocking rates (2, 3.9, and 5.8 animal units ha−1) and three fertilization levels (0, 150, and 300 kg N ha−1 yr−1) on herbage mass and nutritive value of elephantgrass (Pennisetum purpureum Schum.) cv. IRI-381. The experiment was conducted from May to August of 2009 and 2010 in Itambé, PE, Brazil, during the rainy season. Treatments were allocated in a split-plot arrangement in a completely randomized block design. The variables measured included leaf mass (pre- and post-grazing), botanical composition, soil cover, leaf area index, light interception, leaf angle, and concentrations of dry matter, organic matter, N, and in vitro digestible dry matter. When fertilized with 300 kg N ha−1 yr−1, leaf mass reached 18,560 kg ha−1. Leaf area index decreased with increasing stocking rate. The relationship between sward height and light interception was R2 = 0.0126. Increased stocking rate resulted in greater contribution of signalgrass [Brachiaria decumbens (Stapf.) R.D. Webster] in the botanical composition, with a contribution up to 29% in 2010. Elephantgrass nutritive value is directly affected by the fertilization levels and stocking rate, with highest nutrient concentrations observed with 2 AU ha−1 and 300 kg N ha−1 yr−1.(AU)
Assuntos
Palavras-chave
Texto completo
Adicionar na Minha BVS
Imprimir
XML
Buscar no Google

Texto completo: 1 Base de dados: VETINDEX Assunto principal: Pennisetum / Fertilizantes / Ração Animal Limite: Animals País/Região como assunto: America do sul / Brasil Idioma: En Revista: Rev. Bras. Zootec. (Online) Ano de publicação: 2019 Tipo de documento: Article
Texto completo
Adicionar na Minha BVS
Imprimir
XML
Buscar no Google

Texto completo: 1 Base de dados: VETINDEX Assunto principal: Pennisetum / Fertilizantes / Ração Animal Limite: Animals País/Região como assunto: America do sul / Brasil Idioma: En Revista: Rev. Bras. Zootec. (Online) Ano de publicação: 2019 Tipo de documento: Article