Abstract
This study aimed to analyze the effect of two planting spacing on dendrometric characteristics and basic wood density of eucalyptus clones. The experiment in the municipality of Jataí-GO, Brazil, used a randomized complete block design with three replications, in which the spacing (3.0 m x 2.0 m and 3.0 m x 3.0 m) were allocated to the plots and the clones (3335, 3336 and 3487) in the subplots. Diameter at breast height (dbh), total height (HT), total volume (VT), basic density (db), stem biomass (BS), leaf and branch biomass (BLB) and total biomass (BT) were evaluated. The data were submitted to analysis of variance, followed by the Tukey test for comparison of means at the 5% probability level. It was found that the dbh and VT characteristics were not influenced by the planting spacing nor by the clone types. The HT was influenced by the spacing with the highest value (26.3 m) verified in the spacing 3 m x 3 m. The db was influenced only by the clone types and the clones 3335 and 3487 presented the highest values (0.46 and 0.41 g.cm-3, respectively). The BS, BLB and BT were influenced only by clones with higher yields with clones 3335 and 3487. There were no significant interactions for any of the evaluated characteristics.
Highlights
This study aimed to analyze the effect of two planting spacing on dendrometric characteristics and basic wood density of eucalyptus clones
biomassa do fuste (BF), biomassa de folhas e galhos (BFG) e biomassa total (BT) foram influenciadas apenas pelos clones com maiores produções com os clones 3335 e 3487
One of the main silvicultural decisions in the planning of forest production is the choice of planting spacing, since this is the first practice that can cause changes in the characteristics of the future tree (Akhtar et al, 2008; Nolan et al, 2015; Rocha et al, 2016; Rocha et al, 2018), especially in the case of fast growth as the Eucalyptus plantations (Stape et al, 2010)
Summary
Dendrometric characteristics and basic wood density of eucalyptus clones in different spacing
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