One of the main problems faced by humanity is pollution caused by residues resulting from the production and use of goods, e.g, sewage sludge. Among the various alternatives for its disposal, the agricultural use seems promising. The purpose of this study was to evaluate the hydraulic conductivity and interaction of soil with sandy-silty texture, classified as Spodosols, from the Experimental Station Itapirema – IPA, in Goiana, state of Pernambuco, in mixtures with sewage sludge from the Mangueira Sewage Treatment Station, […]

The disposal of sewage sludge and other organic waste on the soil seems be an alternative for the public sector since this can provide nutrients for the growth and maintenance of plant species that constitute the urban systems of green areas. This experiment was conducted in Mogi Guaçu, State of São Paulo to evaluate the effect of doses (0, 20, 40 and 80 Mg ha-1) of an organic sewage sludge compost and grass residue on the recovery of a humusless […]

Studies about nitrogen and carbon mineralization in soils amended with urban waste compost are important to evaluate the reactions of this waste in soil and to define the best rates for crops. Two experiments were carried out under laboratory conditions to evaluate carbon and nitrogen mineralization in an Ultisol fertilized with urban waste compost. The Ultisol first experiment had a completely randomized design, with five urban waste compost rates of 0, 30, 60, 90, and 120 t ha-1 and three replicates. In […]