Produção Nacional
Revisado por pares
Produção de Madeira Roliça para Serraria de Pinus taeda no Sul do Brasil: Abordagem Experimental
2001; EDP Sciences; Volume: 9; Issue: 2 Linguagem: Inglês
ISSN
2183-0363
AutoresCarlos Roberto Sanquetta, Alba Valéria Rezende, Débora Gaiad, Luciano Budant Schaaf, Ana C. Zampier,
Tópico(s)Forest Biomass Utilization and Management
ResumoThis paper evaluates the effects of initial plant spacing on the round-wood yield for saw timber in loblolly pine plantations in Southern Brazil. Five initial densities were compared: (1) 2.5 m x 1.2 m; (2) 2.5 m x 2.0 m; (3) 2.5 m x 2.8 m; (4) 2.5 m x 3.6 m; and (5) 2.5 m x 4.4 m. Data came from a randomized blocks experiment established in a Brazilian forestry company. The experiment was analyzed through ANOVA and Tukey's test. Graphical analysis was also performed to evaluate the impact of five thinning regimes: (1): a single final cut at age 15 without thinning; (2) a single final cut age 20 without thinning; (3) systematic thinning at age 9 and final cut at age 20; (4) selective thinning at ages 9 and 15 and final cut at age 20; and (5) systematic cut combined with selective thinning at age 9, selective thinning at age 15 and final cut at age 20. The results revealed differences (p<0.01) among plant densities. Saw timber yield gradually increased with decreasing plant density, but remarkable differences were noticed for
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