Aplicação de produtos biológicos na produção de mudas de eucalipto

Abstract

This study evaluated the effects of beneficial microorganisms and pyroligneous extract on the vegetative and root development of clonal eucalyptus seedlings produced in a forest nursery. The experiment followed the PDCA methodology, comprising the stages of cutting, acclimatization, and hardening, in a completely randomized design with four replicates per treatment. Plant height and stem diameter at ground level were assessed, and rooting and survival rates were analyzed descriptively. The results showed significant interactions among clone, treatment, and evaluation period for height and diameter, indicating that the response to inputs depends on genetic material and the nursery production stage. In general, the highest increments in height and diameter occurred during the hardening phase. Treatments with pyroligneous extract showed superior performance in the final nursery stages, particularly for clones with lower initial vigor, whereas high-vigor clones maintained good performance regardless of treatment. Rooting and survival data indicated favorable trends associated with pyroligneous extract, especially for more sensitive clones. These findings support targeted use of bioinputs in forest nurseries according to clone characteristics and production stage, contributing to improved efficiency and operational sustainability.