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Yield and diametric structure of Dimorphandra mollis Benth

ABSTRACT Dimorphandra mollis is native to the Brazilian Savanna and has social, economic and environmental importance. This study aimed to evaluate the yield and diametric distribution of Dimorphandra mollis Benth. in the Pandeiros River Environmental Protection Area, in Bonito de Minas, Minas Gerai...

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Published in:Pesquisa agropecuária tropical 2021-01, Vol.51, p.e67240
Main Authors: Costa, Karoline Paulino, Meira, Messulan Rodrigues, Rocha, Silma Leite, Fernandes, Thaíse Ohana Moura, Martins, Ernane Ronie
Format: Article
Language:English
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Summary:ABSTRACT Dimorphandra mollis is native to the Brazilian Savanna and has social, economic and environmental importance. This study aimed to evaluate the yield and diametric distribution of Dimorphandra mollis Benth. in the Pandeiros River Environmental Protection Area, in Bonito de Minas, Minas Gerais state, Brazil. Five areas were assessed, totaling five hectares (50 plots of 1,000 m2). The total number of plants, yield per plant (2018, 2019 and 2020) and diameter at breast height were recorded, considering all trees from the plots in diametric classes. The average diameter at breast height of all plants was 6.05 ± 3.07 cm, and that of the plants that produced in at least one of the evaluated years was 7.46 ± 3.15 cm. The diametric distribution showed classes with no individuals, indicating imbalance, as well as a trend to inverted “J” shape. The maximum annual yield was 8.08 kg ha-1 of dry fruits (2019), the minimum 0.42 kg ha-1 (2018), and the average 2.74 kg ha-1, with biennial characteristic. RESUMO Dimorphandra mollis é nativa do Cerrado e possui importância social, econômica e ambiental. Objetivou-se avaliar a produtividade e distribuição diamétrica de Dimorphandra mollis Benth. na Área de Proteção Ambiental do Rio Pandeiros, em Bonito de Minas, Minas Gerais. Foram avaliadas cinco áreas, totalizando cinco hectares (50 parcelas de 1.000 m2). O número total de plantas, produtividade por planta (2018, 2019 e 2020) e diâmetro à altura do peito foram registrados, considerando-se todas as árvores das parcelas em classes diamétricas. O diâmetro médio à altura do peito de todas as plantas foi de 6,05 ± 3,07 cm, e o das plantas que tiveram produção em pelo menos um dos anos avaliados foi de 7,46 ± 3,15 cm. A distribuição diamétrica apresentou classes sem indivíduos, indicando desequilíbrio, bem como tendência ao formato de “J” invertido. A produtividade anual máxima foi de 8,08 kg ha-1 de frutos secos (2019), a mínima de 0,42 kg ha-1 (2018) e a média de 2,74 kg ha-1, com característica de bienalidade.
ISSN:1517-6398
1983-4063
1983-4063
DOI:10.1590/1983-40632021v5167240