Produção de mudas de Poincianella pyramidalis (Tul.) L.P. Queiroz em diferentes volumes de tubetes

Abstract

The Poincianella pyramidalis is popularly known as catingueira, belongs the Fabacea family; it is endemic specie from caatinga with the important economic values to this biome. The aim of this study was to evaluate the seedlings production of P. pyramidalis in volumes different of tubes and identifying the most suitable container to propagation of this specie. The experiment was done in the city of Cruz das Almas in the state of Bahia, in the nursery seedling production of the Center of Environment and Biological Agriculture Science of the Bahia’s Federal of Reconcavo University. The test was realized in completely randomized design with three treatments (tubes of 50, 180 and 280cm3 and four replicates of 28 seedlings to each treatment. The seedlings were evaluated as for stem diameter and shoot height in the each 15 days, which was started 30 days after the seeding. Through the data of this experiment was obtained the average daily increment of diameter and height. After the 150 days of the seeding was achieved data of the dry mass of the aerial part, dry mass root system, total dry mass, Dickson’s Index of Quality and percentage of deformation of roots. Data were submitted to analysis of variance (α = 0.05), with the averages were compared by the Turkey test at 5% and to increments was used sequential regression analysis. It was observed that the seedlings on larger container (180 e 280cm3) had better development than the small tubes (55 cm3). Due to the economic production cost, is recommend the use of the tubes 180 cm3 for production of this species.