Abstract
The objective of this study was to evaluate the influence of carbonized rice husk on initial growth of Acacia mangium Willd seedlings. The experiment was carried out in the forest of the Federal University of Tocantins, Campus of Gurupi-TO, conducted in a completely randomized design, with five treatments T1: 0% Carbonized Rice Peel (CAC) + 100% Bioflora® Commercial Substrate, T2 : 25% CCS + 75% Commercial substrate; T3: 50% CAC + 50% Commercial substrate; T4: 75% CAC + 25% Commercial substrate; T5: 100% CAC + 0% Commercial substrate, with 4 replicates, each replicate with 18 seeds. The percentage of emergence (% E), shoot height (H), shoot diameter (DC), shoot dry matter weight (PMSPA), root dry weight (PMSR) and dry matter weight Total (PMST). The results indicated that the use of carbonized rice husk added in different proportions to commercial Bioflora ® substrate presented significant results in the parameters analyzed in Acacia mangium Willd seedlings. It is suggested that 25% CAC + 75% of Bioflora® commercial substrate is used in the alternative substrate formulation, considering that this treatment was the one that presented the best result in initial growth of Acacia mangium Willd seedlings.
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