BIOMASS AND MACRONUTRIENTS IN STAND OF Eucalyptus benthamii IN SOUTHERN BRAZIL

• DOI: 10.22533/at.ed.1912010024

• Palavras-chave: Atena

• Keywords: Seed Production Area; Biomass; Nutrient cycling; Productivity

• Abstract:

  In view of the low temperatures

  recorded in winter to the southern region of

  Brazil, Eucalyptus benthamii species have been

  used for reforestation. The objective of this study

  was to quantify biomass and macronutrient

  stock in a seed production area of Eucalyptus

  benthamii, in the municipality of São Francisco

  de Assis - RS. The biomass and nutrients in

  each component were obtained from a total of 9

  trees. The total biomass was 47.59 Mg ha-1, with

  62.14% accumulated in the wood, 13.11% in the

  roots, 10.19 % in the branches, 8.25% in the

  bark, 6.26 % in leaves and 0.05% in fruits. The

  total amount of macronutrients in the biomass

  was: 562.13 kg ha-1. The highest concentration

  of macro-nutrient was observed for N in the

  leaves, with 25.85 g kg-1. The quantification of

  macronutrients in APS biomass in Mg ha-1 is

  proportionally lower when compared to studies

  carried out in commercial plantations. The wood

  is the most represented compartment in the

  biomass, corresponding to 62%.

• Número de páginas: 15