Semeadura direta de espécies florestais nativas, como alternativa de restauração ecológica para a região de Dourados, Mato Grosso do Sul

Abstract

This study aimed to evaluate the performance of 34 native species sown woody in a degraded area, under the influence of tests sowing and sowing the line haul , and consortia with green manures and other forms of plant life . Were installed 02 primary treatments , sowing haul ( M ) and line ( L ) , and 04 secondary treatments , control ( 1 ) : only direct sowing of forest species consortium ( 2 ) : seeding with green manures , intercropping ( 3 ) : seeding with other life forms ( shrubs and lianas ) , consortium ( 4 ) : seeding with other life forms and green manures . The result indicated that the ordination ( PCoA ) of the samples responded to 57.91 % of the variance of the relative percentage of individuals surviving according to the variables (time of sowing , planting and type of consortia ) . The ANOVA ( p > 0.05 ) showed that there was significant interaction between the type of sowing in early development of individuals germinated . The direct sowing had significantly higher average height primary and secondary treatments were significant percentages of individuals surviving species that stood at 13 months of age were: Dipteryx alata Vogel , Enterolobium contortisiliquum ( Vell. ) Morong , Myracrodruon urundeuva Allemão , G. ulmifolia Lam , Sapindus saponaria L. , Hymenaea courtabil L. , Pterogyne nitens Tul . ,Bixa orellana L. and Myrcia guianensis ( Aubl. ) DC . The direct seeding of tree species is feasible for reclamation . The combined application of two techniques of seeding is an alternative for the restoration process to be more efficient while respecting the standards germination and establishment of each species . Sowing in line is recommended for recovery of pastures forsaken , or where competition for grasses is high because , in this model the control of invasive plants can be easily accomplished by using hoe , hoe cultivator with a tractor or animal traction , trimmers , and possibly the use of jet directed towards the application of postemergence herbicides .