FERTIGATION OF SUNFLOWER CROPS USING LANDFILL LEACHATE

Authors

  • Daniela da Costa Leite Coelho Department of Engineering and Environmental Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN http://orcid.org/0000-0001-9182-3675
  • Antonio Osmar Medeiros Júnior Department of Engineering and Environmental Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN http://orcid.org/0000-0003-1324-5990
  • Ketson Bruno da Silva Department of Engineering and Environmental Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN http://orcid.org/0000-0002-2553-0513
  • Nildo da Silva Dias Department of Engineering and Environmental Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN http://orcid.org/0000-0002-1276-5444
  • Rafael Oliveira Batista Department of Engineering and Environmental Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN http://orcid.org/0000-0002-3083-6808

DOI:

https://doi.org/10.1590/1983-21252018v31n417rc

Keywords:

Helianthus annuus L.. Urban wastewater. Biomass. Biofuel.

Abstract

The use of landfill leachate (LL) to produce biomass for energy and biofuel purposes is an alternative that minimizes environmental degradation. In this context, the objective of this work was to evaluate the effect of using different rates of LL in the fertigation of sunflower (Helianthus annuus L.) crops. The experiment was conducted in a randomized block design with five treatments and four replications—20 experimental plots. The treatments consisted of control with 100% water from the water supply (WWS) (T1); 80% WWS + 20% LL (T2); 60% WWS + 40% LL (T3); 40% WWS + 60% LL (T4); and 20% WWS + 80% LL (T5). The sunflower crops were grown in a eutrophic Red-Yellow Argisol for 81 days, in Mossoró RN, Brazil. The plant characteristics evaluated—plant height, number of leaves, steam diameter and capitulum diameter—was determined. All variables evaluated presented statistical differences between treatments. In general, plants in the treatment 60% WWS + 40% LL presented better performance regarding the characteristics evaluated.

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Published

17-10-2018

Issue

Section

Agricultural Engineering