“…Increases in the Ca 2+ content in the soil with the application of different inorganic residues, such as those from the cellulose industry, granite processing and paper recycling, were also obtained by several authors (Albuquerque et al, 2011;Guarçoni & Fanton, 2011;Balbinot Júnior et al, 2014). In plants, calcium is a component of the cell wall, acting on the stabilization of cell membranes, on the enzymatic activation, cell division, root growth, pollen germination and pollen tube growth (Raij, 2011;Domingues et al al., 2016).…”