Data/hora: 12/06/2024 08:30:41

Provedor de dados: | 42
País: | Brazil
Título: | Thinning regimes and initial spacing for Eucalyptus plantations in Brazil
Autores: | FERRAZ FILHO,ANTONIO C.; MOLA-YUDEGO,BLAS; GONZÁLEZ-OLABARRIA,JOSÉ R.; SCOLFORO,JOSÉ ROBERTO S.
Data: | 2018-03-01
Ano: | 2018
Palavras-chave: | Growing space; Forest management; Solid wood products; Stand density management.
Resumo: | ABSTRACT This study focuses on the effects of different thinning regimes on clonal Eucalyptus plantations growth. Four different trials, planted in 1999 and located in Bahia and Espírito Santo States, were used. Aside from thinning, initial planting density, and post thinning fertilization application were also evaluated. Before canopy closure, and therefore before excessive competition between trees took place, it was found that stands planted under low densities (667 trees per hectare) presented a lower mortality proportion when compared to stand planted under higher densities (1111 trees per hectare). However, diameter growth prior to thinning operations was not statistically different between these two densities, presenting an overall mean of 4.9 cm/year. After canopy closure and the application of the thinning treatments, it was found that thinning regimes beginning early in the life of the stand and leaving a low number of residual trees presented the highest diameter and height growth. Unthinned treatments and thinning regimes late in the life of the stand (after 5.5 years), leaving a large number of residual trees presented the highest values of basal area production. The choice of the best thinning regime for Eucalyptus clonal material will vary according to the plantation objective.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000100255
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/0001-3765201720150453
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.90 n.1 2018
Fonte: | info:eu-repo/semantics/openAccess