Uso de água residuária no manejo da irrigação na cultura de margaridinha (Chrysanthemum paludosum)

Abstract

The production of ornamental flowers has been gaining greater visibility in the agricultural production sector, and can be cultivated with the purpose of cut flowers or vases. When talking about production, it is extremely important to pay attention to the water consumption of the crop, since water is a resource in scarcity. In contrast, the use of wastewater becomes an advantageous option in the use of irrigation. This study aimed to evaluate the influence of different irrigation blades and the use of different concentrations of swine wastewater in the production of daisy (Chrysanthemum paludosum), grown in a protected environment. The study was implemented in the greenhouse of the experimental area of the Agricultural Engineering course at the Federal University of Pampa – Campus Alegrete/RS. The experimental design was completely randomized, bifactorial (irrigation doses X concentrations of swine wastewater). With 3 irrigation doses (100%, 70% and 30% of the pot capacity) and 5 concentrations of swine wastewater: 100% Effluent (T1), 50% Effluent + 50% H2O (T2), 100% H2O (T3), 25% Effluent+ 75% H2O (T4) and 75% Effluent + 25% H2O (T5). Each concentration will consist of four repetitions, totaling 60 pots. Sowing was carried out in Styrofoam trays, filled with commercial substrate, where they remained until transplanted into plastic pots. Were evaluated weekly: plant height (AP), stem diameter (DC), number of nodes (NN), number of leaves (NF). Through the results, the best plant responses occurred for a depth of 70% of CV. All doses of effluent dilutions tested provided good yields for the plant. For the culture coefficient (Kc) values of 0.787 (0-26 DAT) and 0.655 (27-89 DAT) were found. While, Etc ranged from 1.71 mm/day to 0.73 mm/day.