Micro-organismos Eficientes na Germinação de Sementes e Emergência de Plântulas de Cecropia pachystachya

Abstract

Cecropia pachystachya is a native and pioneer species, characterized by its rapid development and use in the environmental recovery of degraded areas. One technique that can aid in seedling development involves the use of efficient microorganisms (EM), which can assist in nutrient availability, protection against pathogens, and the germination process. Thus, the objective of this work was to evaluate the effects of EM on seed germination and seedling emergence of C. pachystachya. The first stage consisted of evaluating different soaking times of the seeds in distilled water (10, 20, 30, and 40 minutes) in order to identify the best time to apply EM to the seeds. The seeds subjected to two tests: germination and seedling emergence, evaluating three criteria: primary root emission, germination, and emergence. No significant differences were observed in the rates of any of the criteria at the end of the experiment. Therefore, a time of 10 minutes was selected. In the second stage, the seeds were soaked in solutions of different concentrations of EM (20%, 40%, 60%, 80% and 100%) and subjected to the same germination and seedling emergence tests. No differences were observed in the rates of any of the three criteria. These results indicate that efficient microorganisms do not have an effect on seed germination or seedling emergence of C. pachystachya.