SOIL CHANGES AND YIELD OF MAIZE FERTILIZED WITH SWINE WASTEWATER

Authors

  • Carlos José Gonçalves de Souza Lima Department of Agricultural Engineering and Soil Science, Universidade Federal do Piauí, Teresina, PI http://orcid.org/0000-0003-0390-4323
  • Laércio da Silva Pereira Doctorate in Agronomy: irrigation and drainage, Universidade Estadual Paulista “Júlio de Mesquita Filho”, Botucatu, SP http://orcid.org/0000-0001-8929-5084
  • Theuldes Oldenrique da Silva Santos Master in Agronomy: tropical agriculture, Universidade Federal do Piauí, Teresina, PI http://orcid.org/0000-0003-2974-3783
  • Samia Natacia Pinto Master in Agronomy: tropical agriculture, Universidade Federal do Piauí, Teresina, PI http://orcid.org/0000-0001-8052-8179
  • Artenisa Cerqueira Rodrigues Department of Agricultural Engineering and Soil Science, Universidade Federal do Piauí, Teresina, PI http://orcid.org/0000-0002-1621-4412
  • Luís Alfredo Pinheiro Leal Nunes Department of Agricultural Engineering and Soil Science, Universidade Federal do Piauí, Teresina, PI http://orcid.org/0000-0003-1403-1556

DOI:

https://doi.org/10.1590/1983-21252019v32n117rc

Keywords:

Organic waste. Soil attributes. Zea mays.

Abstract

Swine wastewater can be used as a biofertilizer and promote significant improvements in soil physical-chemical attributes and yield. The objective of this study was to evaluate the effects of swine wastewater application on soil and maize yield. The experiment was conducted at the Agricultural Sciences Center of the Federal University of Piauí, in Teresina, Piauí, Brazil, from August to November 2015. The experimental design used completely randomized blocks in split-plot scheme, with five doses of swine wastewater (0, 25, 50, 75 and 100 m³ ha-1) in the plots and two soil depths (0.20 and 0.40 m) in the subplots, with four replications. Exchangeable contents of calcium, magnesium, phosphorus, potassium and sodium, electrical conductivity, pH, sum of bases, base saturation, potential acidity and cation exchange capacity, and crop yield were evaluated. Results showed calcium, magnesium, sum of bases and cation exchange capacity increased with elevated levels of swine wastewater. Potassium and sodium contents however decreased with doses of 51.58 and 52.28 m3 ha-1, respectively. Except for potassium and potential acidity, variables showed higher values at the 0-0.20 m depth.

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Published

28-03-2019

Issue

Section

Agronomy