Açaí fruit production and carbon stock in managed plantations in Southeast of Roraima

Abstract

The quantification of the carbon stock present in fruits and residues from the manufacture of açaí pulp provides an estimate of the contribution of these key-species to the Amazonian ecosystem to maintain the Earth’s climatic balance. Thus, this work aimed to evaluate the production and carbon stock, based on factor 0.5, developed by the Intergovernmental Panel on Climate Change (IPCC), present in açaí (Euterpe oleraceae M.) “BRS-Pará”, in managed plantations in São João da Baliza, Roraima. Allometric models were adjusted to estimate the carbon stock present in the fruits, bunches, and total (bunch and fruits) of açaí in terms of height and root collar diameter, a variable easily measured in the field. The production of açaí fruits and the forest carbon stock were higher in the managed planting with restriction thinning of only one remaining stem (single) about managed planting with thinning and clump conduction (average of three stipes). Therefore, both plantations provided a large production of açaí pulp with good economic yield and increased forest carbon stock per hectare.

Açaí production in the municipality of São Miguel do Guamá, Pará: perspective of açaí beaters

“…This demand growth led to an evolution from the extractive system, low productivity (4.2 t/ha -1 ) to the managed (8.4 t/ha -1 ) and irrigated system, which can reach 15 t/ha -1 with technological innovation (SANTOS et al, 2012). In addition to economic yield, native forests and planted areas of açai palm tree has a high forest carbon stock per hectare (CONDÉ et al, 2020).…”

“…Com esse crescimento do mercado, observa-se uma mudança do sistema extrativo, que apresenta baixa produtividade (4,2 t/ha -1 ), para o sistema manejado (8,4 t/ha -1 ) e o irrigado, que podem atingir 15 t/ha -1 , com possibilidade de crescer ainda mais com as inovações tecnológicas (SANTOS et al, 2012). Além do rendimento econômico, as florestas nativas e plantadas de açaizais apresentam elevado estoque de carbono florestal por hectare (CONDÉ et al, 2020).…”