Qualidade de mudas Desapindus saponaria L. em diferentes volumes dos recipientes

Abstract

Sapindus Saponaria L. is a native plant, considered to be of multiple use, being quoted for use in heterogeneous reforestation designated to degraded areas and permanent preservation. The production of seedlings for reforestation is influenced by many factors, especially the quality of the seedling. The objective of this work was to evaluate the effect of tube volume according to the time of development of Sapindu saponaria L. seedlings. The experiment was carried out in a completely randomized design composed of three volumes of polypropylene tubes (55cm3, 180cm3 and 280 cm3) with ten replicates and fifteen seedlings per repetition of each volume, totaling 450 experimental units. The height of the shoots, stem diameter at ground level and number of leaves with an interval of 15 days were evaluated in the period of 120 days after sowing. The data were submitted to variance analyses, and later the means were compared by the Scott-Knott test at 5%probability. Linear, quadratic and cubic regression models were tested aiming at a better description of volumes. In tubes of 180 and 280 cm3 sapindus saponaria L seedlings. obtained the highest mean values for all variables. The seedlings produced in the larger tubes presented conditions for planting at 90days and 120 days for the tubes of 280 cm3 and 180 cm3, respectively. Therefore, the tubes of 280 cm3 are the most suitable for this species, which will provide accessible conditions for the production of this seedling, such as the reduction of the production cycle.