In this study, we aimed to analyze the growth of Eucalyptus benthamii and Mimosa scabrella seedlings produced on substrates based on biosolids (BIO), carbonized rice hulls (CRH) and semi-decomposed pine husk (SC), and to correlate the properties of the substrates to the growth of seedlings. To this end, six substrates were prepared: SC, BIO/CRH (1/1, v:v), BIO/CRH (4/6, v:v), BIO/CRH (3/7, v:v), BIO/CRH (2/8, v:v) and BIO/CRH (1/9, v:v). The following variables were assessed: shoot height, stem diameter, shoot dry biomass, root dry biomass, ease of seedling removal from the cartridge, and substrate root aggregation. The results showed that all substrates were viable for Eucalyptus benthamii, whereas for Mimosa scabrella, subtracts based on biosolids were not viable because of organic matter, pH, electrical conductivity, and salinity.
Eucalyptus; bracatinga; biosolids