Manejo da adubação do bambu Dendrocalamus giganteus Wallich ex Munro em área experimental

Abstract

Due to the high demand for wood and its derivatives, the aim is to search for alternative, renewable materials that can meet this demand. Bamboo is evident as an excellent product because its characteristics as low cost, easy to obtain and easy adaptation. Despite the growing demand for bamboo, there is a lack of research, with adequate knowledge about the correct handling of fertilizer in the forests of bamboos. It has been the objective of this study was to evaluate the response of bamboo Dendrocalamus giganteus the nitrogen (N), phosphorus (P) and potassium (K). The experiment is implemented in the experimental area of the Federal Technological University of Paraná, Campus Two Neighbors. The experimental setup consists of 3 experiments each with 4 portions, each portion has 5 rows and 4 plants in each row, so four portions for each nutrient (N, P and K). Each line was a repeat and received a dose of a nutrient, or for each portion 5 nutrient doses. The experimental design was a randomized block design (RBD). The treatments were P doses: 0, 40, 80, 120 and 160kg ha-1; K: 0, 30, 60, 90 and 120 kg ha-1 and N: 0, 40, 80, 120, 160 kg ha-1. The products used were triple superphosphate, potassium chloride and urea, respectively. In addition to the amounts of N, P and K of the experiment, a standard dose was used for plants of nutrients that are not treatment. Thus, treatment with doses of P was added a dose of 80 kg N ha-1 and 60 kg ha-1 K for all plants. Treatment with K fertilization was added a dose of 80 kg N ha-1 and P 80kg ha-1. And, in the treatment with N concentrations was added a dose of 80kg P and 60kg ha-1 K-1 ha. The evaluations were number of sticks per plant, height and circumference at ground 0.10 m of each beam, number of shoots per plant, height and circumference at the ground of each bud 0.10m, counting the smaller shoots to 0.10m soil, and estimation of the crown area of tussocks. The results were statistically analyzed with analysis of variance and regression analysis. As a result only the variable circumference of the shoot had a significant response, and the other had no significant responses in terms of fertilizer doses. This fact may be related to the time interval between fertilization and evaluations. suggesting new-assessments over time as well as other experiments are performed to evaluate the bamboo response to the application of nutrients.