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Chemical Composition and Energy Yield of Elephant-Grass Biomass as Function of Five Different Production Ages

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  • Rafael Freitas
  • Tatiane Barbé
  • Rogério Daher
  • Ana Kesia Vidal
  • Wanessa Stida
  • Verônica da Silva
  • Bruna Rafaela Menezes
  • Antônio Pereira

Abstract

Elephant grass has high biomass production, with qualities suitable for conversion into bioenergy, but has long been used exclusively for animal feed and only in recent years has it become an energetic alternative. Therefore, it is necessary to select genotypes with potential for energy production. This study evaluated the effect of five harvest times (8, 12, 16, 20, and 24 weeks) on the yield and chemical composition related to biomass quality through combined polynomial regression analyses of the following elephant grass genotypes- Cubano Pinda, Mercker 86-México, Pusa Napier n°1, Mole de Volta Grande, P-241-Piracicaba, and King Grass. A completely randomized design with three replicates, in a split-plot arrangement, was adopted, including two factors (plots = genotypes, subplots = harvest times). The evaluated variables were whole-plant dry matter yield, in t ha-1 (DMY), percentage of neutral detergent fiber (%NDF), and percentage of acid detergent fiber (%ADF). The elephant-grass genotypes Cubano de Pinda, Mercker 86-México, and P-241-Piracicaba showed a linear first-degree effect as a function of the harvest intervals, indicating that they did not reach their maximum production potential. Genotypes Pusa Napier n°1, Mole de Volta Grande, and King Grass, in turn, had a linear second-degree effect. For the NDF variable, all genotypes showed a significant linear second-degree effect as a function of the harvest intervals, except P-241-Piracicaba, for which no regression was observed. For this genotype, there was a significant linear first-degree effect on the %ADF variable.

Suggested Citation

  • Rafael Freitas & Tatiane Barbé & Rogério Daher & Ana Kesia Vidal & Wanessa Stida & Verônica da Silva & Bruna Rafaela Menezes & Antônio Pereira, 2017. "Chemical Composition and Energy Yield of Elephant-Grass Biomass as Function of Five Different Production Ages," Journal of Agricultural Science, Canadian Center of Science and Education, vol. 10(1), pages 343-343, December.
    • Handle: RePEc:ibn:jasjnl:v:10:y:2017:i:1:p:343
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    References listed on IDEAS

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    1. Isah Y. Mohammed & Yousif A. Abakr & Feroz K. Kazi & Suzana Yusup & Ibraheem Alshareef & Soh A. Chin, 2015. "Comprehensive Characterization of Napier Grass as a Feedstock for Thermochemical Conversion," Energies, MDPI, vol. 8(5), pages 1-15, April.
    2. Kalt, Gerald & Kranzl, Lukas, 2011. "Assessing the economic efficiency of bioenergy technologies in climate mitigation and fossil fuel replacement in Austria using a techno-economic approach," Applied Energy, Elsevier, vol. 88(11), pages 3665-3684.
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    Cited by:

    1. Roberto Carlos Beber & Camila da Silva Turini & Vinicius Carrillo Beber & Roberta Martins Nogueira & Evaldo Martins Pires, 2024. "Elephant Grass Cultivar BRS Capiaçu as Sustainable Biomass for Energy Generation in the Amazon Biome of the Mato Grosso State," Energies, MDPI, vol. 17(21), pages 1-16, October.

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    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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