Agricultural recycling of biodigested vinasse for lettuce production

  • Camila Roberta Javorski Ueno Universidade Estadual de Maringá
  • Antonio Carlos Saraiva da Costa Universidade Estadual de Maringá
  • Marcelino Luiz Gimenes Universidade Estadual de Maringá
  • Gisella Maria Zanin Universidade Estadual de Maringá
Keywords: biomass, Lactuca sativa, nutrients, residue, stillage, wastewater

Abstract

The agricultural use of waste products represents an interesting alternative for nutrient cycling. Biodigested vinasse, the final waste product of vinasse biodigestion and biogas production, can be reused for agricultural purposes. The present work sought to quantify the shoot dry mass production of lettuce plants, as well as foliar nitrogen, phosphorus and potassium content following the application of biodigested vinasse on soil. Biodigested vinasse was produced from anaerobic vinasse digestion, using anaerobic sludge as a source of microorganisms. The treatments, with four replications in entirely randomized design, consisted of anaerobic sludge from a gelatin factory, vinasse in natura, biodigested vinasse and a control treatment. The experiment was conducted over 45 days using 5 L vases and applying a dose equivalent to 150 m3 ha-1. Lettuce treated with biodigested vinasse showed higher shoot dry mass production and higher accumulation of nitrogen, phosphorus and potassium in its leaves than that treated with vinasse in natura.

Author Biography

Camila Roberta Javorski Ueno, Universidade Estadual de Maringá
Programa de Pós-graduação em Agronomia
Published
16/10/2014
Section
Papers