Cumulative growth in height, diameter of the lap and survival of juçara (Euterpe edulis Martius) seedlings under intense and moderate shading

Abstract

juçara palm (Euterpe edulis Martius) is a key species of the Atlantic Forest that is in danger of
extinction. The production of quality seedlings is essential for the recovery of the species in
places where there are no more individuals. In this sense, it is important to investigate the light
requirement in the initial development of the seedlings of the juçara palm. The objective of this
work was to evaluate the cumulative growth in height, the diameter of the lap and the survival of
juçara seedlings under moderate (SM) and intense (SI) shading. The experimental design was
completely randomized, with each treatment consisting of 4 replicates of 20 seedlings. Height
growth was evaluated over 130 days and, at the end of the experiment, the survival rate, height
and neck diameter were analyzed. No significant difference was observed in growth in height
and diameter of the seedlings in relation to moderate and intense shading. SI treatment provided
a higher survival percentage when compared to SM treatment at a 5% probability level.