Estabelecimento de espécies florestais nativas por meio de semeadura direta para recuperação de áreas degradadas

Abstract

The objective of this work was to evaluate the use of direct sowing and the influence of a physical protector on establishment of native species, in a pasture area and on a crop area as well. The experiment was carried out in the city of São Cristóvão-SE (10o55'20"S e 37o12'00"W), in a random block design, in a factorial design with three replicates. Seeds of Erythrina velutina Wild., Bowdichia virgilioides Kunth., Guazuma ulmifolia Lam., Machaerium aculeatum Raddi, Lonchocarpus sericeus (Poir) DC. and Sapindus saponaria L. were used. Field evaluatinons consisted on the following: emergence, survival and early development of the species (height and diameter). With regard to the emergence and seedlings survival, there was significant difference between the two studied environments, in which the subsystem agriculture showed the best results. Considering the development of species in the field, E. velutina stood out due to the higher values of height and diameter in both areas, in both treatments. Direct sowing was feasible in the recovery of degraded areas, with the use of native species, in the study areas.