Potential early development of Aspidosperma polyneuron Müll in rehabilitation projects of degraded area in southeastern Amazon

Rubens Ribeiro Ribeiro da Silva, Gilson Araujo de Freitas, Aurélio Vaz de Melo, Alôncio Gottardo Pietralonga, Raimundo Wagner de Souza Aguiar, Joenes Mucci Pelúzio, Ildon Rodrigues Nascimento

Abstract


The definition and recommendation of the species for the different successional stages in areas under the recovery process are dependent on their behavior in environments under different light intensities. Thus, the present work aimed to define the successional stage in which plants of Aspidosperma polyneuron Müll Arg must be indicated for use in projects that aim to restore degraded areas according to the intensity of light. The experiment was conducted as a randomized block design with 15 replications. The treatments consisted of three levels of brightness (T1: Full sun, T2: 50% retention of light and T3: Natural Shadow). Data collection was performed at intervals of 21 days, until 145 days after emergence (DAE). Plants of Aspidosperma polyneuron Müll subjected to different levels of light intensity linearly as a function of time after planting. When grown in an environment with 50% sunlight they had a rate of growth in height and diameter higher than the plants under full sunlight. The greater weight of dry stem and root were also observed in environments of 50% light. All characteristics evaluated showed mass increases by increasing the light intensity.


Keywords


Aspidosperma polyneuron; ecological succession; revegetation



DOI: https://doi.org/10.5777/paet.v3i1.625