title: Chemical attributes of soil fertilized with cassava mill wastewater and cultivated with sunflower.
abstract: The use of waste arising from agroindustrial activities, such as cassava wastewater, has been steadily implemented in order to reduce environmental pollution and nutrient utilization. The aim of this study is that the changes in chemical properties of dystrophic red-yellow latosol (oxisol) were evaluated at different sampling times after reuse of cassava wastewater as an alternative to mineral fertilizer in the cultivation of sunflower, hybrid Helio 250. The experiment was conducted at the Experimental Station of the Agricultural Research Company of Pernambuco (IPA), located in Vitória de Santo Antão. The experimental design was randomized blocks with 6 × 5 subplots; six doses of cassava wastewater (0; 8.5; 17.0; 34.0; 68.0; and 136 m(3) ha(-1)); and five sampling times (21, 42, 63, 84, and 105 days after applying the cassava wastewater), with four replications. Concentrations of available phosphorus and exchangeable potassium, calcium, magnesium and sodium, pH, and electrical conductivity of the soil saturation extract were evaluated. Results indicate that cassava wastewater is an efficient provider of nutrients to the soil and thus to the plants, making it an alternative to mineral fertilizers.
authors.affiliation: Departamento de Engenharia Agrícola, Universidade Federal Rural de Pernambuco (UFRPE), Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, 52171-900 Recife, PE, Brazil.
authors.forename: Mara Suyane Marques
authors.initials: MS
authors.lastname: Dantas
authors.affiliation: Departamento de Engenharia Agrícola, Universidade Federal Rural de Pernambuco (UFRPE), Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, 52171-900 Recife, PE, Brazil.
authors.forename: Mário Monteiro
authors.initials: MM
authors.lastname: Rolim
authors.affiliation: Departamento de Engenharia Agrícola, Universidade Federal Rural de Pernambuco (UFRPE), Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, 52171-900 Recife, PE, Brazil.
authors.forename: Anamaria de Sousa
authors.initials: Ade S
authors.lastname: Duarte
authors.affiliation: Departamento de Engenharia Agrícola, Universidade Federal Rural de Pernambuco (UFRPE), Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, 52171-900 Recife, PE, Brazil.
authors.forename: Ênio Farias de França
authors.initials: ÊF
authors.lastname: de Silva
authors.affiliation: Departamento de Engenharia Agrícola, Universidade Federal Rural de Pernambuco (UFRPE), Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, 52171-900 Recife, PE, Brazil.
authors.forename: Elvira Maria Regis
authors.initials: EM
authors.lastname: Pedrosa
authors.affiliation: Departamento de Engenharia Agrícola, Universidade Federal Rural de Pernambuco (UFRPE), Rua Dom Manoel de Medeiros, s/n, Dois Irmãos, 52171-900 Recife, PE, Brazil.
authors.forename: Daniel da Costa
authors.initials: Dda C
authors.lastname: Dantas
mesh_terms: D005308:Fertilizers; D006368:Helianthus / Q000254:growth & development*; D007220:Industrial Waste; D002365:Manihot; D012987:Soil; D062065:Wastewater
chemical_list: D005308:Fertilizers; D007220:Industrial Waste; D012987:Soil; D062065:Wastewater