Morphogenesis and productivity of Pioneiro elephant grass under different residual heights and light interceptions

Autores

  • Eleuza Clarete Junqueira de Sales Universidade Estadual de Montes Claros
  • Carlos Ramon Santiago Saraiva Instituto Federal de Educação, Ciência e Tecnologia Baiano
  • Sidnei Tavares dos Reis Universidade Estadual de Montes Claros
  • Vicente Ribeiro Rocha Júnior Universidade Estadual de Montes Claros
  • Daniel Ananias de Assis Pires Universidade Estadual de Montes Claros
  • Cláudio Manoel Teixeira Vitor Universidade Federal de São João Del Rei

DOI:

https://doi.org/10.4025/actascianimsci.v36i2.22220

Palavras-chave:

Pennisetum purpureum, elongation rate, appearance rate, phyllochron

Resumo

The aim of this study was to assess two residual heights and two light interceptions on morphogenetic, structural and productive characteristics of Pennisetum purpureum Schum. cv. Pioneiro. The experiment was a factorial randomized block design with four replications. We evaluated morphogenetic characteristics in three basal tillers tagged in each plot, in different tussocks. Tiller population density was evaluated in marked areas in all experimental units. The interaction between the factors significantly influenced the leaf and pseudostem elongation rate, the leaf appearance rate, phyllochron, number of leaves per tiller, green leaves per tiller, final leaf blade length, leaf area index and biomass yield. There were no changes in the leaf senescence rate, number of senescent leaves per tiller and tiller density. Most morphogenetic variables was affected by the interactions between factors which also influenced the productivity, allowing to set the treatment with50 cm residual height and cut to reach values near 95% light interception as the one with the best results for the variables analyzed.

 

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Biografia do Autor

  • Eleuza Clarete Junqueira de Sales, Universidade Estadual de Montes Claros
    Professor, Unimontes/CCET/Agrárias/Janaúba/MG
  • Carlos Ramon Santiago Saraiva, Instituto Federal de Educação, Ciência e Tecnologia Baiano
    Professor, Instituto Federal de Educação, Ciência e Tecnologia Baiano, Campus Guanambi,
  • Sidnei Tavares dos Reis, Universidade Estadual de Montes Claros
    Professor, Unimontes/CCET/Agrárias/Janaúba/MG
  • Vicente Ribeiro Rocha Júnior, Universidade Estadual de Montes Claros
    Professor, Unimontes/CCET/Agrárias/Janaúba/MG
  • Daniel Ananias de Assis Pires, Universidade Estadual de Montes Claros
    Professor, Unimontes/CCET/Agrárias/Janaúba/MG
  • Cláudio Manoel Teixeira Vitor, Universidade Federal de São João Del Rei
    Professor/UFSJ DEL REI/MINAS GERAIS

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Publicado

2014-02-12

Edição

Seção

Forragicultura

Como Citar

Sales, E. C. J. de, Saraiva, C. R. S., Reis, S. T. dos, Rocha Júnior, V. R., Pires, D. A. de A., & Vitor, C. M. T. (2014). Morphogenesis and productivity of Pioneiro elephant grass under different residual heights and light interceptions. Acta Scientiarum. Animal Sciences, 36(2), 137-143. https://doi.org/10.4025/actascianimsci.v36i2.22220