Substratos orgânicos para produção de mudas de Koelreuteria paniculata Laxn para arborização urbana

Abstract

This work was conducted out at the forest nursery of Universidade Tecnológica Federal do Paraná - Campus Dois Vizinhos and aimd to analyze the development seedlings of Koelreuteria paniculata Laxn under different proportions of manure substrate, the experiment was completely randomized in three treatments and 3 repetitions (0.0% of manure, 33.3% of manure, 66.6% of manure). The analysis consists in evaluating the growth of the variables of height, diameter and root parts of seedlings; quantify the dry biomass of shoots and roots of seedlings and existing stock of nutrients in biomass. The procedures for measuring height and diameter were made monthly since the phase of the cartridge vessel, comprising a period of three years and six months. Quantification of dry biomass was carried out at each change of packaging with the seedlings at the age of 10 months in phase cartridge of 290 cm3, 1 year and 5 months at the stage of 2500 cm3 plastic bag and 3 years and 6 months in the first vase of 25 L. The measurement of dry biomass consisted of randomly selecting seedlings. Were took to the greenhouse to dry and then weighed. The data were tabulated in Excel and analyzed using the Comparison Test Medium in 7.6 ASSISTAT software to indicate the best formulation of substrate. The recommended dosage, based on the study results, may vary between 33.3% and 66.6%, depending on the development of the variable of interest. The poultry litter is shown as an effective organic fertilizer and conditioner good physical / chemical substrate, being low cost, recycling waste products from poultry and can become another source of income by selling the material to nurseries.