Potencialidades de espécies lenhosas nativas para produção madeireira em solos degradados

Abstract

The cultivation of native species in degraded soils associated with the ecological benefits, represents an economical alternative and reduce the pressure and demand for remaining native forests. The scarcity of scientific information on the growth of native tree species in forest plantations in different ecological conditions, can be considered a limiting factor in the increase of forested areas for environmental and economic issues. This study focused on to evaluation of growth of four native woody species under different spacings. The experiment was conducted at the Experimental Campus of Federal University of Bahia Recôncavo (UFRB), Cruz das Almas, Bahia, assessing the followinq: angico (Anadenanthera macrocarpa Benth.) aroeira vermelha (Schinus terebinthifolius Radii), cedro (Cedrelafissilis Vell.) and Gonçalo-alves (Astronium fraxinifolium Schott.). The experimental design was on randomized blocks with four replications, in plots sub-divided on alternating bands. The seedlings were planted in alternating rows, with spacings 3.0 x 1.5 m, 3.0 x 2.0 m, 3.0 x 3.0 x 2.5 m and 3.0 m. Survival was evaluated, as well as the We evaluated survival, trunk diameter at ground level (DNS) and total height (HT), 12 and 24 months of age. Data was and subjected to analysis of variance and means compared by test of Tukey at 5% significance level. The species with higher survival rates were aroeira vermelha and Gonçalo-alves, 100% and 99.48% respectively at 24 months. The DNS of the species, on the evaluated periods present superiority in growth rates in periods. The initial assessment the growth indicates the potential of establishment of each crop species.