YIELD OF Pinus taeda L. IN THINNED STAND IN THE CAMPOS DE CIMA DA SERRA REGION, RIO GRANDE DO SUL.

• Autor(a) principal: Elesbão, Luiz Ernesto Grillo
• Data de Publicação: 2011
• Outros Autores: Schneider, Paulo Renato
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Ciência Florestal (Online)
• Texto Completo: https://periodicos.ufsm.br/cienciaflorestal/article/view/2754
• topic: yield; selective thinning; basal area.; produção; desbaste seletivo; área basal

This work was carried out with the objective of studying the yield of Pinus taeda L., planted in an initial spacing of 3 x 2 m, located in Canela, Rio Grande do Sul state. The amostral population was submitted to one and two selective thinning, beyond a control sample, without thinning. The selective low thinning was conducted with reduction of the basal area to levels of 28 m2/ha. At age 17, the total yield of the control sample, without thinning, was 886.3 m3ha-1; with one thinning at age 11 the yield was 756.6 m3ha-1, resulting in losses of yield of 14.6% compared to the control; with two selective at ages 11 and 15, the yield was 732.9 m3ha-1, resulting in losses of yield in relation with the control sample, without thinning, of 17.3%. The selective thinning allowed a significant gain in diameter, up to age 17, with the execution of a selective thinning at age 11 an average diameter of 33.4 cm; with two selective thinning at ages 11 and 15 an average diameter of 33.5 cm; and an average diameter of 24.3 cm in the control sample, without thinning.