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Title: | Ensaio de espaçamento com Caroba - Jacaranda copaia (Aubl.) D. Don. Bignontaceae |
Authors: | Sampaio, Paulo de Tarso Barbosa Barbosa, Antenor Pereira Fernandes, Noeli Paulo |
Issue Date: | 1989 |
metadata.dc.publisher.journal: | Acta Amazonica |
metadata.dc.relation.ispartof: | Volume 19, Pags. 383-389 |
Abstract: | In 1980, an experiment with Caroba (Jacaranda copaia (Aubl.) Dan) was placed in the Experimental Sation of Tropical Silviculture at INPA, Manaus for testing three different plant spacing (2,0 x 3,0 m; 3,0 x 4,0 m and 4,5 x 4,0m). in 1989, the results showed that the estimate of total survival of plants, comercial hight and volume were higher at the smaller spacing (2,0 x 3,0 m), under this condition, plants showed the greatest volume of utile wood, in addition to the higher number of living trees (80%) with a comercial heigh average of 11,8 m and aritmetic DBH average of 22, 7 cm. Fifth year after planting, in 1985 it was observed that in all the experiment a significant number of trees showed a chlorotic canopy, with falling leaves, as a consequence, an increase of dead trees was obsrved, perhaps because of soite nutritional constraint the occurred in this experiment. |
metadata.dc.description.resumo: | Na Estação Experimental de Silvicultura Tropical (E.E.S.T.) do INPA-Manaus, foi instalado no ano de 1980 um experimento para Caroba em três (3) espaçamentos. As avaliações da sobrevivência, altura total e comercial, D.A.P., área basal e volume realizadas no ano de 1989, nove anos após o plantio, indicaram que o menor espaçamento (2,0 X 3,0 m) apresentou maior volume de madeira útil em função do grande número de árvores vivas (70,98%) com altura comercial média de (11,76 m) e D.A.P. médio aritmético de 22,73 cm. Após o 5º ano de plantio, foi observado que um número significativo de árvores apresentaram copas cloróticas, seguida da queda das folhas e consequente morte das árvores, fato este, possivelmente relacionado com o estado nutricional das árvores deste experimento. |
metadata.dc.identifier.doi: | 10.1590/1809-43921989191389 |
Appears in Collections: | Artigos |
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