BIOMASS AND MICRONUTRIENTS IN A Eucalyptus benthamii MAIDEN STAND IN SOUTHERN BRAZIL

• DOI: 10.22533/at.ed.1912010025

• Palavras-chave: Atena

• Keywords: Atena

• Abstract:

  The rapid rotation of Eucalyptus

   

  spp. leads to the exportation of large amounts

   

  of nutrients, compromising the long-term

   

  productivity of the area. Thus, the sustainability

   

  of the environment becomes the object of study.

   

  Micronutrients, even if required in low quantities,

   

  are essential for full tree development. Thus,

   

  the present study aimed to quantify the biomass

   

  and micronutrient stock in a stand of Eucalyptus

   

  benthamii, in the municipality of São Francisco

   

  de Assis - RS. Total biomass was 47,59 Mg

   

  ha-1, with 62,14% accumulated in trunk wood,

   

  13,11% in roots, 10,19% in branches, 8,25%

   

  in trunk bark, 6,26 % in leaves and 0,05% in

   

  fruits. The total amount of micronutrients in the

   

  biomass was: 830,39 g ha-1, being the highest

   

  concentration observed for Fe in the roots,

   

  with 4665,52 g kg-1. There was also a need

   

  for nutritional supplementation for elements B

   

  and Zn, which are below the appropriate leaf

   

  content of micronutrients. It was observed that

   

  the largest amounts of micronutrients are in the

   

  bark, leaf, fruits, branches and roots, components that can be left in the field after

   

  harvest, contributing to the nutrient cycling of the site

• Número de páginas: 15