Biomassa e nutrientes em povoamento de Eucalyptus urograndis na Serra do Sudeste-RS
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Data
2012
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Resumo
This study had as objective to quantify biomass and nutrients, in an 18 months Eucalyptus urograndis
stand in southeastern mountain range, Piratini-RS. Twenty-four (24) plots (15.0 m x 22.5 m) were
allocated; after that, one tree (with diameter at breast height) was felled in each plot. The tree was
fractionated in the following fractions of above ground biomass: wood, bark, branches and leaves.
Total biomass was 18.5 Mg ha -1 , being the wood the fraction with highest biomass (37%), followed by
branches (34.2%), leaves (21.3%) and bark (7.6%). Leaves showed highest nutrients concentrations,
being statistically superior to other fractions (p<0.05), excepted for Ca, Mg and B. For macronutrients,
the accumulation magnitude was Ca > N > K > Mg > P > S, and for micronutrients was Mn > Fe > B
> Zn > Cu. Highest amount of nutrients is contained on leaves component, due to the highest nutrients
concentration, excepted for Ca, Mg and Cu that are located in large quantities in the branches.
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Nutrição florestal, Produção florestal, Nutrientes, Forestry nutrition, Forestry production, Nutrients
Citação
VIERA, Márcio; BONACINA, Darlan Michel; SCHUMACHER, Mauro Valdir; CALIL, Francine Neves; CALDEIRA, Marcos Vinicius Winckler; WATZLAWICH, Luciano Farinha. Biomassa e nutrientes em um povoamento de Eucalyptus urograndis na Serra do Sudeste-RS. Semina: ciências agrárias, Londrina, v. 33, supl. 1, p. 2481-2490, 2012.