This study aimed to evaluate the consumption of water in eight substrates (rice hulls - CAC, rice husk ash burned - CZ, coconut fiber - CF, land of paradise - TP, TP+CAC, TP+CZ , FC+CAC and FC+CZ) and define which of these substrates are the best for commercial production of Asiatic Lily 'Orange Pixie® ", grown in pots at protected conditions. The experiment was conducted in a greenhouse at the Department of Plant Science, UFSM, Santa Maria, RS. The experimental design was completely randomized using 12 replications and three plants per pot to determine the frequency of irrigation and water consumption. For evaluation of the parameters, it is stipulated limits of at least 60% and a maximum of 80% capacity of the container, checked daily using a digital scale. Measurements were performed on the substrates: the substrate density, total porosity, aeration and water space available. In plants, the following parameters were measured: plant height and insertion of the first flower, number of leaves and flowers, internode distance, average length of leaves and petals, average width of leaves and petals, total water consumption and irrigation frequency. The results showed that the Asiatic Lily 'Orange Pixie® "pot is suited for cultivation in the land of paradise substrate and coir mixture over rice husk ash. These substrates had an average water consumption of 121.65 and 106.78mL and irrigation frequency of 22 and 21 days respectively. The best combination was not the one consumed most water, but that one that required more frequent irrigation.
irrigation; substrates; Asiatic Lily
