Crescimento e produção da Anadenanthera macrocarpa (Benth) Brenan, sob diferentes espaçamentos

Abstract

Anadenanthera macrocarpa (Benth.) Brenan is a species that has wood with desirable characteristics for use in civil and naval construction, carpentry and woodworking, besides having a high concentration of tannin in its bark and was therefore very exploited for use in the tannery. However, studies are still limited to improve the biomass quality of native species based on silvicultural and management practices. Thus the objective of this work was to evaluate the growth and yield of Anadenanthera macrocarpa cultivated under different spacing. The study was conducted in an experiment implemented in 2008, Cruz das Almas - BA. The experimental design was a randomized block design with four treatments (6 x 1.5 m, 6 x 2 m, 6 x 2.5 m and 6 x 3 m) and four replications, in a time subdivided plot (1, 2, 3, 4, 5 and 6 years). Data on diameter at ground height (cm), total height (m), basal area per hectare (m2ha-1), volume per plant (m3), volume per hectare (m3ha-1) and annual average increment (m3ha-1-year-1) were subjected to analysis of variance and means compared by the Skott-Knott test at 5% probability. Significant difference (p <0.05) was observed for all variables at different ages. There was a significant difference between DAS and HT averages for all periods evaluated. The increase of the average volumetric increment in the evaluated periods indicates good adaptation and potential of A. macrocarpa for wood production in Cruz das Almas.