Desenvolvimento de plantas jovens de açaizeiro (Euterpe oleracea mart.) plantado em área com vegetação secundária (capoeira) na localidade de Benjamin constant, Município de Bragança, Estado do Pará.

Abstract

Evaluated the development of the acai palm monthly (Euterpe oleracea Mart.) planted in secondary forest, in the period of March to December of 2005. The study were conduced in a capoeira of 50 x 50m2 in Benjamin Constant Community, Municipality of Bragança State of Pará. Planted 532 seedlings with spacing of 2m among plants that were identified and numbered with plastic labels. They were appraised the survival and mortality, growth in diameter and length of the stem, number of functional leaves and don't functional, attack in the leavers and analysis of the soil of the area. The largest survival (87,21%) was period of larger precipitation and smaller temperature and the largest mortality (96,61%) was period of smaller precipitation and larger temperature. The growth in diameter, length of the stem and production of leaves it growing in the period of larger precipitation and smaller temperature, however, with decrease of the precipitation and increase of the temperature the diameters reduced, the length was slower and the loss of leaves it increased. The attack of leaves was superior to 80%, caused by grasshoppers, caterpillars and rabbits. The chemical analysis of the soil showed that the low fertility influenced in the vegetative growth. The high mortality, the decrease of the diameter, the smallest growth in length of the stem and the loss to leaves they were consequences of the smallest readiness water in the period of smaller precipitation and larger temperature and of the low fertility of the soil