Microrganismos eficientes no cultivo de espécies arbóreas nativas da Mata Atlântica

Abstract

The ecological restoration of the Atlantic Forest demands sustainable strategies that favor the initial establishment of native species, such as the use of bioinputs as an alternative to conventional chemical inputs. Efficient Microorganisms (EM) have been used with objective of improving soil properties and stimulating plant development. THE This study evaluated the effects of applying ME, in different substrate conditions, on the initial performance of two tree species from the Atlantic Forest: Anadenanthera colubrina (Fabaceae) and Schinus terebinthifolius (Anacardiaceae). It was assumed that microorganisms favor the emergence, growth and survival of seedlings. THE experiment used three types of substrates (degraded soil, degraded soil with compost organic and pure organic compound) and two levels of ME (with and without application). They evaluated themselves emergence, survival, height and diameter at ground level. The application did not influence the species emergence, but presented distinct effects on growth and survival. In A. colubrina, the greatest growth in height occurred in the treatment with soil mixed with organic compost without ME, without differences in diameter. In S. terebinthifolius, substrates with organic compounds promoted greater height and diameter, especially when associated with ME. Survival varied between species and treatments. The results indicate that the effects of these microorganisms are dependent on the species and soil conditions, and its use must consider these interactions.