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In the above ground biomass of a native forest or plantation are stored\udlarge quantities of nutrients, with few studies in the literature, especially concerning\udmicronutrients. The present work aimed to quantify the micronutrients in above ground\udbiomass in a Seasonal Subtropical forest in Itaara-RS, Brazil. For the above ground biomass\udevaluation, 20 trees of five different diameter classes were felled. The above ground\udbiomass was separated in the following compartments: stem wood, stem bark, branches\udand leaves. The contents of B, Cu, Fe, Mn and Zn in the biomass samples were determined.\udThe stock of micronutrients in the biomass for each component was obtained based on\udthe estimated dry biomass, multiplied by the nutrient content. The total production of\udabove ground biomass was estimated at 210.0 Mg.ha-1. The branches, stem wood, stem\udbark and leaves corresponded to 48.8, 43.3, 5.4 and 2.4% of the above ground biomass.\udThe lower levels of B, Cu, Fe and Mn are in stem wood, except for Zn; in the branches\udand trunk wood are the largest stocks of B, Cu, Fe and Mn. In the branches, leaves and\udtrunk bark are stored most micronutrients, pointing to the importance of these to remain\udon the soil

MICRONUTRIENTES NA BIOMASSA ACIMA DO SOLO EM UMA FLORESTA ESTACIONAL SUBTROPICAL