MORPHOLOGICAL CHARACTERISTICS AND FORAGE PRODUCTIVITY OF IRRIGATED CACTUS PEAR UNDER DIFFERENT CUTTING INTENSITIES

Authors

  • Guilherme Ferreira da Costa Lima Department of Animal Production, Empresa de Pesquisa Agropecuária do Rio Grande do Norte, Parnamirim, RN.
  • Margareth Maria Teles Rego Department of Animal Production, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior/ Empresa de Pesquisa Agropecuária do Rio Grande do Norte, Parnamirim, RN.
  • Fernanda Daniele Gonçalves Dantas Department of Animal Production, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior/Universidade Federal Rural de Pernambuco, Recife, PE.
  • Raimundo Nonato Braga Lôbo Embrapa Goats and Sheep, Empresa Brasileira de Pesquisa Agropecuária, Sobral, CE.
  • José Geraldo Medeiros da Silva Department of Animal Production, Empresa de Pesquisa Agropecuária do Rio Grande do Norte, Parnamirim, RN.
  • Emerson Moreira de Aguiar Academic Unit in Agricultural Sciences, Universidade Federal do Rio Grande do Norte, Macaíba - RN.

DOI:

https://doi.org/10.1590/1983-21252016v29n226rc

Keywords:

Cactaceae. Forage reserves. Irrigation. Opuntia fícus-indica. Semiarid.

Abstract

This study evaluated the effect of different cutting intensities and years of harvesting on the morphological characteristics and production of fresh (FMP) and dry matter (DMP) of cactus pear cv. Gigante (Opuntia ficus-indica Mill) under conditions of irrigation, high planting density and fertilization, with 12 months of regrowth. The experimental was completely randomized in a factorial design (3 × 2) with 12 replicates. The treatments were three cutting intensities (preserving the mother cladode (PMC), primary cladodes (PPC), or secondary cladodes (PSC)), and two years of harvesting. The soil was classified as Cambisol Haplicum and the irrigation water was classified as C4S1 (EC 5.25 dS.m-1) density of 50,000 plants ha-1. The research evaluated plant height, number of cladodes per plant (NCP), length, width, perimeter and thickness of the cladodes, cladode area (CA), cladode area index (CAI), FMP and DMP. There was no significant interaction between treatments (P > 0.05) for the variables plant height, NCP, CAI and FMP. The variables related to cladode morphology showed a significant interaction (P < 0.05). The treatment PSC resulted in a greater DMP (P < 0.05) with a mean of 27.17 Mg ha-1 yr-1, compared to PPC (18.58 Mg ha-1 yr-1) or PMC (11.78 Mg ha-1 yr-1). The treatment PSC promoted greater NCP and forage productivity at harvest and can be considered as a management practice for the sustainability of cactus pear cv. Gigante under irrigation. The more important morphological characteristics were also influenced by the lower cutting intensities.

Author Biographies

  • Guilherme Ferreira da Costa Lima, Department of Animal Production, Empresa de Pesquisa Agropecuária do Rio Grande do Norte, Parnamirim, RN.
    Pesquisador Embrapa/EMPARN. Coordenador de Pesquisa e Produção Animal da EMPARN
  • Margareth Maria Teles Rego, Department of Animal Production, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior/ Empresa de Pesquisa Agropecuária do Rio Grande do Norte, Parnamirim, RN.
    Pesquisadora/Doutora. Bolsista PNPD CAPES - Programa de Pós-Graduação em Produção Animal da UFRN.
  • Fernanda Daniele Gonçalves Dantas, Department of Animal Production, Coordenação de Aperfeiçoamento de Pessoal de Nível Superior/Universidade Federal Rural de Pernambuco, Recife, PE.
    Mestranda do Programa de Pós-Graduação em Produção Animal da UFRN. Bolsista da CAPES.
  • José Geraldo Medeiros da Silva, Department of Animal Production, Empresa de Pesquisa Agropecuária do Rio Grande do Norte, Parnamirim, RN.
    Pesquisador/Doutor. Diretor Presidente da EMPARN.
  • Emerson Moreira de Aguiar, Academic Unit in Agricultural Sciences, Universidade Federal do Rio Grande do Norte, Macaíba - RN.
    Professor Associado II da UFRN, Vice-Coordenador do Programa de Pós-Graduação em Produção Animal da UFRN.

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Published

03-05-2016

Issue

Section

Zootechnics