Reforested soil under drip irrigation with treated wastewater from poultry slaughterhouse

Abstract

The disposal of treated effluents on soil is the main final use of wastewater in Brazil. Although this practice can promote improvements of some soil attributes, there is a need for monitoring in order to ensure that potential environmental impacts are not harmful. Thus, the purpose of this study was to evaluate the effects of treated effluent from a poultry slaughterhouse on the chemical attributes of an Oxisols, in Matelândia-PR, Brazil under drip irrigation. The soil attributes P, K, Fe, Cu, Zn, Mn, pH in CaCl2, H + Al, Al, Ca, Mg, cation exchange capacity (CEC), and percent base saturation (V) were evaluated under four effluent application rates, 0, 100, 200 and 300 m³ ha-1 d-1 with treated effluents on three successive sampling dates. As main results it was observed that high irrigation rates increased soil phosphorus and potassium concentrations. In addition, an association between the increase of soil potential acidity and exchangeable acidity was detected, although pH did not vary significantly either between treatments or between sampling dates.

Soil quality in the black oat and soybean succession system irrigated with treated slaughterhouse effluent

“…Oxisols, contrairly, were located in Brazil and all of them were clayey soils, which is commonly aggregated in a strong grade of fine and very fine granular structure (Eswaran and Reich, 2004), leading to a rapid permeability. Regarding soil texture in the reviewed database, 31.03% of papers did not mention it (Adesemoye et al, 2006;Araujo et al, 2019;Bole and Gould, 1985;Shilpi et al, 2018), 27.59 % studied sandy loam soils (Abegunrin et al, 2016c;Arku and Musa, 2014;Sims, 2003b, 2000;Russell, 1982;Russell et al, 1993;N Wells and Whitton, 1970), 13.79% silt loam Churchman and ate, 1986;Magesan et al, 1999), 10.34 % clay Oliveira et al, 2017a;Oliveira et al, 2017b), 10.34% sand da Silva Neto et al, 2013;Osemwota, 2010b), 3.45% clay loam (A. and 3.45% loamy sand (Russell, 1982).…”