Abstract
The decomposed Babassu stem is a renewable organic material with physical and chemical properties suitable for the production of countless seedlings. Thus, the objective was to evaluate the use of substrates based on decomposed Babassu stems in the production of Cupuaçu seedlings. The experiment was conducted in a greenhouse in the municipality of Presidente Juscelino - MA. A completely randomized design was used with 6 treatments containing different proportions of Babassu decomposed stem (BDC). The biometric parameters of the Cupuaçu tree were evaluated. CBD significantly influenced the initial growth of the Cupuaçu tree. Plant height and stem diameter obtained the best results at 44.84% and 63.5% of CBD, respectively. Root length and root volume had the best results at 100% CBD. The plant height/root length ratio had its best performance at 0% CBD. It is concluded that the decomposed Babassu stem promotes the initial development of Cupuaçu seedlings.
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