A by-product of Wastewater Treatment Stations is sewage sludge. By treatment and processing, the sludge is made suitable for rational and environmentally safe use in agriculture. The aim of this study was to assess the influence of different doses of limed sewage sludge (50 %) on clay dispersion in soil samples with different textures (clayey and medium). The study was conducted with soil samples collected from native forest, on a Red Latosol (Brazilian classification: Latossolo Vermelho distroférrico) loamy soil in Londrina […]

The point of zero salt effect (PZSE) of soil samples is usually determined by a graphic method where the PZSE corresponds to the pH value observed at the crossing point of drafted potentiometric titration curves. Although the use of graphic software decreases the personal bias that normally occurs when the titration curves are drafted by hand, this determination method can be time-consuming when there is a great number of soil samples. The present work aimed to develop a software to […]