SUNFLOWER PRODUCTION IRRIGATED WITH RESIDUE WATER UNDER INORGANIC FERTILIZATION

The objective of this study was to evaluate the production of sunflower (Helianthus annuus L., Catissol 01) under the effect of irrigation with water supply (A1) and treated sewage effluent (A2) associated with inorganic fertilization in the environment protected at the Federal University of Campina Grande Campus I, Campina Grande, PB. The experimental design was completely randomized and the treatments consisted of dosages of inorganic fertilization (D1: 60, D2: 80, D3: 100, D4: 120 and D5: 140% of the recommended N dose for the crop) and two sources of irrigation (A1 and A2) in a 5 x 2 factorial scheme with 5 replications, totaling 50 experimental units. The variables analyzed were: fresh shoot biomass (FSB), dry shoot biomass (DSB), number of petals (NP), internal diameter of the chapter (DI), external diameter of the chapter (IDC), weight of achenes (WA), total number of achenes (TNA) and weight of 100 achens (W100A). The wastewater showed efficacy for the irrigation of sunflower cv. Catissol 01, since the main production variables were not affected by their use, and can be used for the irrigation of this crop.