Resíduo sólido orgânico urbano e níveis de irrigação no cultivo de crambe

• Autor(a) principal: Franco, Claudenir Facincani [UNESP]
• Data de Publicação: 2013
• Tipo de documento: Tese
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/108443
• topic: Água; Composto orgânico; Irrigação agricola; Resíduo sólido; Plantas; Crescimento (Plantas); Evapotranspiração; Irrigation

The organic urban solid waste (OUSW) are produced in large amounts causing environmental problems for the population. The agricultural use of this waste can help minimize this impact. Moreover, the water main and limiting factor of production has become an increasingly valued. The crambe can be used in crop rotation and has high value industrial oil and can be used in the manufacture of biofuel and a variety of inputs. Thus, the main of this work was to study the effect of composted OUSW and irrigation levels on growth and grain yield of crambe plants. The experiment was conducted in a greenhouse using soil in PVC containers with dimensions of 0.45 m in height and 0.30 m in diameter. The experimental design was completely randomized in a factorial design (5x4) with three replications. The factors consisted of five doses of composted OUSW corresponding to 0, 15, 30, 60 and 120 Mg ha-1 and four irrigation levels 40, 70, 100 and 130% of the blade calculated based on the method of estimating evapotranspiration (TE) estimated by atmometer. Each replicate contained seven plants. The plants were evaluated for shoot height and diameter and divided into grains, roots, stems and leaves and the plant material was dried in an oven with forced air circulation, temperature 65-70°C until constant weight. Grains were separated 100 units to determine the mass of 100 grains. Based on the results for the various characteristics studied were carried out analyses of variance (F test), for comparison between the doses of residue and levels of irrigation applied, and regression analysis. The composted of OUSW promoted in soil an increase in the values of Active Acidity (pH), Organic Matter (OM), Phosphorus (P), Potassium (K), Calcium (Ca), Magnesium (Mg), Sum of Bases (SB), Capacity Cation Exchange (T), and Bases for Saturation (V%), and reducing the amount of potential acidity (H + Al) soil, and plants of crambe ...