Espaçamento e adubação em Pinus elliotti var. elliotti x Pinus caribaea var. hondurensis sob delineamento anel de Nelder

Abstract

The objective of this work was to compare and analyze the influence of spacing and levels of fertilization on an experimental unit, verifying in which of the spacings and levels of fertilization used in the experiment provided the best development for the hybrid in the region of Dois Vizinhos - PR. The evaluated project is installed in the Universidade Tecnológica Federal do Paraná - Campus Dois Vizinhos. The design used is Nelder ring type, which has different spacings, calculated by the distance of the individual towards the center of the ring and the opening angle of the rays in which they were planted. Fertilization levels are divided into 6 treatments based on Phosphated fertilization (27% of P205) based on the fertilization recommendation of SC and RS, being the control (0g / plant-1); 1x (119.1g / plant-1); 2x (238.2g / plant1); 4x (476.4g); 6x (714.6g) and 8x (952.8g / plant-1). The individuals did not present statistical differences (P> 0.05) for the variables height, diameter at breast height, cross-sectional area, and height-diameter relation (hd), presenting only difference for crown area, the individuals probably did not express difference between the previous variables by the question of age (27 months), the spacing variation may have inhibited the influence of fertilization on the variables.