African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6576

Full Length Research Paper

Impact of harvesting with burning and management of straw on the industrial quality and productivity of sugarcane

Gisele Silva de Aquino
  • Gisele Silva de Aquino
  • Department of Agronomy, Universidade Estadual de Londrina, Rod. Celso Garcia Cid, PR 445, Km 380, Box-Postal 10.001, CEP 86057-970 Londrina, Paraná, Brazil.
  • Google Scholar
Cristiane de Conti Medina
  • Cristiane de Conti Medina
  • Department of Agronomy, Universidade Estadual de Londrina, Rod. Celso Garcia Cid, PR 445, Km 380, Box-Postal 10.001, CEP 86057-970 Londrina, Paraná, Brazil.
  • Google Scholar
Ayres de Oliveira Menezes Junior
  • Ayres de Oliveira Menezes Junior
  • Department of Agronomy, Universidade Estadual de Londrina, Rod. Celso Garcia Cid, PR 445, Km 380, Box-Postal 10.001, CEP 86057-970 Londrina, Paraná, Brazil.
  • Google Scholar
Amarildo Pasini
  • Amarildo Pasini
  • Department of Agronomy, Universidade Estadual de Londrina, Rod. Celso Garcia Cid, PR 445, Km 380, Box-Postal 10.001, CEP 86057-970 Londrina, Paraná, Brazil.
  • Google Scholar
Osmar Rodrigues Brito
  • Osmar Rodrigues Brito
  • Department of Agronomy, Universidade Estadual de Londrina, Rod. Celso Garcia Cid, PR 445, Km 380, Box-Postal 10.001, CEP 86057-970 Londrina, Paraná, Brazil.
  • Google Scholar
Ana Carolina Benitez Cunha
  • Ana Carolina Benitez Cunha
  • Department of Agronomy, Universidade Estadual de Londrina, Rod. Celso Garcia Cid, PR 445, Km 380, Box-Postal 10.001, CEP 86057-970 Londrina, Paraná, Brazil.
  • Google Scholar
Jaime Higino dos Santos Júnior
  • Jaime Higino dos Santos Júnior
  • Department of Agronomy, Universidade Estadual de Londrina, Rod. Celso Garcia Cid, PR 445, Km 380, Box-Postal 10.001, CEP 86057-970 Londrina, Paraná, Brazil.
  • Google Scholar
Deise Akemi Omori Kussaba
  • Deise Akemi Omori Kussaba
  • Department of Agronomy, Universidade Estadual de Londrina, Rod. Celso Garcia Cid, PR 445, Km 380, Box-Postal 10.001, CEP 86057-970 Londrina, Paraná, Brazil.
  • Google Scholar
Luis Fernando Almeida
  • Luis Fernando Almeida
  • Department of Agronomy, Universidade Estadual de Londrina, Rod. Celso Garcia Cid, PR 445, Km 380, Box-Postal 10.001, CEP 86057-970 Londrina, Paraná, Brazil.
  • Google Scholar


  •  Received: 17 March 2016
  •  Accepted: 16 June 2016
  •  Published: 14 July 2016

Abstract

Change from the traditional harvesting system with burns to mechanized harvesting of sugarcane, as well as the amount of straw needed to remain in the field for sustainability of the production system and how much could be removed for sectors such as energy cogeneration and bioethanol production, are not clarified issues. The objective of this study was to evaluate the impact of harvest management with burning (traditional) and cultivatation with different amounts of straw on the industrial quality and productivity of sugarcane. The effect of six treatments were evaluated: cane burning, 0, 25, 50, 75 and100% (20 Mg ha-1) of straw on the industrial quality (soluble solids (°Brix), Pol, apparent purity, total sugars (TS), reducing sugars (RS) and fiber) and productivity (Mg Pol ha-1) of sugarcane. At the end of the cycle, the straw decomposition rate for each treatment was also verified. The higher the percentage of straw, the higher the degradation rate. The change of burned cane harvesting system for sugarcane under straw results in improved productivity of sugarcane and favors the production of sugar. The straw and harvest system change do not affect the industrial quality of sugarcane. The harvest with burning, the total withdrawal or of 75% of the straw of the field result in lower productivity. The maintenance of 50% of the straw on the soil surface is sufficient to improve the productivity of sugarcane in dry period, and the remaining 50% can be used for second generation of ethanol production or electricity without damaging the crop productivity.

Key words: Saccharum spp, soil cover technological quality, biomass, sucrose.