[RETRACTED ARTICLE] Biochar and swine wastewater: Effects on soil fertility of different textures and corn nutrition

ABSTRACT

The use of organic waste in agriculture has stimulated the search for technologies that reduce environmental pollution. Among the residues are the biochar and swine wastewater (SW), which incorrectly disposed cause negative impacts, however, when combined, they can enhance agricultural production, due to the synergism between both. In this sense, the objective was to evaluate the influence of doses of biochar, from conilon coffee straw, combined or not with swine wastewater diluted to 50% (SW50%), on the nutrient content in medium and clayey texture soils and in the corn plant tissue. The experiment was carried out in a greenhouse, with five doses of biochar, two irrigation waters and two soils, with three repetitions. The pH, P, K⁺, Ca⁺², Mg⁺², Zn⁺² and Na⁺ in the soil and N, P, K, Ca, Mg, Zn and Na in plant were evaluated. The addition of biochar in doses linearly increased the levels of P and K⁺ in both soil textures, with synergy when irrigated with SW50%. The SW50% provided a nutrients increase in the corn plant tissue. The agricultural use of biochar from conilon coffee straw was important to increase the content of P and, mainly, K in the aerial part of corn.

Keywords:
biochar; coffee straw; corn nutrition; nutrient availability; swine slurry; water reuse

The editorial board of Revista Ceres communicates the formal publication of the Retraction for extracting the article:

Cunha EG, Guidinelle RB, Rangel OJP & Passos RR (2022) Biochar and swine wastewater: Effects on soil fertility of different textures and corn nutrition. Revista Ceres, 69(1):102-112. https://doi.org/10.1590/0034-737X202269010013

This article is being retracted because it has been published in a previous edition of Revista Ceres:

Cunha EG, Guidinelle RB, Rangel OJP & Passos RR (2021) Biochar and swine wastewater: Effects on soil fertility of different textures and corn nutrition. Ceres Magazine, 68(6):586-596. https://doi.org/10.1590/0034-737X202168060011

Prof. Teogenes Senna de Oliveira

Editor-in-Chief

Publication Dates

• Publication in this collection
  14 Jan 2022
• Date of issue
  Jan-Feb 2022

History

• Received
  08 July 2020
• Accepted
  07 Apr 2021