Atributos químicos e densidade do solo sobre diferentes manejos florestais em plantio de pinus taeda L. no sudoeste do - PR

Abstract

Forests, mostly, being established in soils poor in nutrients, the soil, is the characteristic of the environment that influences the growth of plants, minerals and nutrients offers quality products that are generated The aim of this study was evaluation of the quality of soil by determining the nutrient stocks in soil under different conditions of forest management applied in a Pinus taeda, with 22 years old, the project was implemented in the region Quedas do Iguaçu – PR. Belonging to the company ARAUPEL. S/A. Using statistical analysis to test Tukey 5% probability, it was found that the different situations created by forest management did not affect the levels of nutrients stored in the soil. Regarding the content of macronutrients, only P and Mg were detected in medium and high levels, respectively, the other nutrients are in very low levels, the Al element was presented a very high content even for soils with pine, a fact that was accompanied the pH value reached 3.4 in the present SP treatment, these values may cause phytotoxicity, and decreased uptake and translocation of phosphorus, calcium and magnesium plant, maintaining productivity and development of the next afforestation of pine. Thus it is very important to make a correction of this soil, seeking to meet the nutrient required by the species to be implanted.