Nitrogen and potassium fertilization on elephantgrass cv. Napier under rotational grazing

Authors

  • Jailson Lara Fagundes Secretaria de Agricultura e Abastecimento do Estado de São Paulo, Agência Paulista de Tecnologia dos Agronegócios, Polo Regional de Desenvolvimento Tecnológico dos Agronegócios da Alta Paulista, Adamantina, SP
  • Dilermando Miranda da Fonseca Universidade Federal de Viçosa, Departamento de Zootecnia, Viçosa, MG
  • Cláudio Mistura Universidade do Estado da Bahia, Departamento de Zootecnia, Juazeiro, BA
  • Luis Tarcísio Salgado Empresa Brasileira de Pesquisa Agropecuária, Centro Nacional de Pesquisa de Gado de Leite, Juiz de Fora, MG
  • Domingos Sávio Queiroz Empresa de Pesquisa Agropecuária de Minas Gerais, Viçosa, MG
  • Rodrigo Vieira de Morais Universidade Federal de Viçosa, Departamento de Zootecnia, Viçosa, MG
  • Cláudio Manoel Teixeira Vitor Universidade Federal de Viçosa, Departamento de Zootecnia, Viçosa, MG
  • Luciano de Melo Moreira Universidade Federal de Viçosa, Departamento de Zootecnia, Viçosa, MG

Keywords:

chemical composition, forage, management, pasture, Pennisetum purpureum

Abstract

This work was conducted at Leopoldina-MG with the objective of evaluate the effects of N and K combination doses on the availability and chemical composition of the forage and stocking rate of elephantgrass (Pennisetum purpureum Schum. cv. Napier) pasture under rotational grazing. In an area of 4.5ha, a factorial combination of three N doses (100, 200 and 400kg ha-1) and three K doses (50, 100 and 200kg ha-1 of K2O) was evaluated during four rainy periods (1997/98 to 2000/01). The experimental design was a randomized complete block with two spatials replicates. No effect was observed on K fertilization on total, leaf and stem dry matter production, chemical composition and animal production. However, the availability of total dry matter, leaf dry matter, stem dry matter and crude protein content were proportional to the N doses and they changed with the rainy periods. The N fertilization increased the availability of total, leaf and stem dry matter of elephantgrass, and it contributes to increase the stocking rate and the weight gain per animal and per area.

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Published

2007-02-22

Issue

Section

FORAGE CROPS AND PASTURES

How to Cite

Nitrogen and potassium fertilization on elephantgrass cv. Napier under rotational grazing. (2007). Bulletin of Animal Husbandry, 64(2), 149-158. http://bia.iz.sp.gov.br/index.php/bia/article/view/1237

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