Fenologia reprodutiva de Attalea maripa (Aubl.) Mart. (inajá) (Arecaceae) em sistema silvipastoril no nordeste paraense.

Abstract

The world's energy matrices have in the oil major source of fossil energy, which has generated large environmental liabilities. Thus the search for alternative energy sources such as biofuel production from palm native to the Amazon, as Attalea maripa (Aubl.) Mart. (inajá), became necessary. The work aimed to study the phenological behavior of inajá in silvopastoral system. The research was carried out in Bonito (PA), from August 2009 to December 2011. The phenological data were obtained on 100 adult palms on 3.25 hectares. Data were analyzed by phenogram, index of Synchrony, and factor analysis. The results showed that the pattern of flowering and fruiting phenology of inajá is not seasonal, is long lasting and fluctuates throughout the year. Rainfall is a significant climatic factor for flowering and very important for fruiting and dispersal of this palm. The highest intensity of flowering occurs in less rainy season and fruiting of the greatest rainfall. The fall and leaf emission of inajá are not seasonal events, but continuous. Just phenophase palm spathe closed inajá is highly synchronous. The fruiting in general is a bit synchronous phenological event.