This study aimed to evaluate the quality of seedlings of six eucalypt species produced on substrates with different proportions of organic waste: coconut fiber and rice hulls. The experiment was carried out in the forest nursery of the University of Brasilia (UnB). The substrates used comprised combinations of two residues mixed with vermiculite at three proportions (25%, 50% and 75%). The species were evaluated separately, each with 6 treatments arranged in a completely randomized design in a 2x3 factorial (two residues and three proportions) with 8 repetitions. The following parameters were evaluated: height, diameter, number of leaves, dry mass of shoots and roots, height/diameter ratio, and Dickson quality index. Higher measures of height, diameter, dry mass of shoots, and height/diameter ratio were observed on the substrate with coconut fiber compared with the substrate with rice hulls for most species evaluated. The incorporation of 25% of vermiculite to coconut fiber residue provided a higher quality standard of seedlings for all species studied.
organic waste; coconut fiber; rice hulls