versão impressa ISSN 0102-0536
VIDAL, Luiz Henrique I; SOUZA, José Roberto P. de; FONSECA, Ésio de P e BORDIN, Ivan. Quality of guaco seedlings produced by stakes in rice hulls with humus. Hortic. Bras. [online]. 2006, vol.24, n.1, pp. 26-30. ISSN 0102-0536. http://dx.doi.org/10.1590/S0102-05362006000100006.
The guaco is a medicinal specie where the leaves are used, once they possess the active ingredient. The propagation of the plants is made by stakes. In this experiment we evaluated the development and quality of guaco dumb propagated by stakes in different concentrations of humus added to rice hulls. The experimental design was of randomized blocks with subdivided parcels [five humus proportions (0; 5; 10; 20 and 40%) and five seedling ages (60; 70; 80; 90 and 100 days)], with four replicates. Each unit was composed of 60 stakes (15% of top branches, 70% of intermediate branches and 15% of basal branches). The parameters evaluated were: height; diameter; leaf retention; number and sprout length; leaf area; dry weight of the leaves, stem, aerial part, roots and total; relation aerial part/root; height/diameter of the base of the stake; height/dry weight of the aerial part and Quality Index of Dickson (QID). All guaco stakes evaluated formed roots with the addition or not of humus to the rice hulls. The guaco seedlings reached good quality between 90 to 100 days after transplanting of the stakes. The parameters that defined the quality of the seedlings were the relations dry weight of the aerial part/dry weight of the root, height of the aerial part/dry weight of the aerial part, height of the aerial part/diameter of the stake base and QID that showed the values 5.85; 4.24; 14.41 and 0.17, respectively.
Palavras-chave : Mikania glomerata Spreng; medicinal plants; vegetative propagation; humus of earthworm.