Alterações na qualidade da madeira de Eucalyptus grandis causadas pela adubação mineral

CERNE

Laclau, Jean Paul²  Sette Jr, Carlos Roberto¹  Tomazello Filho, Mario⁴  Calil, Francine Neves¹  Pádua, Franciane Andrade de³  Deus Jr, José Carlos de³ 

[1] Universidade Federal de Goiás, Goiânia, Brasil$$;Centre de Recherche Agronomique Pour le Développement, Montpellier, France$$;Universidade Federal de São Carlos, Sorocaba, Brasil$$;Universidade de São Paulo, Piracicaba, Brasil$$

关键词: stem wood;    wood density;    anatomy characteristic;    fertilization;    eucalyptus.;   

DOI  :  10.1590/01047760.201420021499

来源: Universidade Federal de Lavras-UFLA

【 摘 要 】

The diverse and important use of wood from fast growth eucalyptus plantations requires the analysis of the effect of mineral fertilizers on wood quality. The objective of this study was to evaluate the anatomical characteristics and wood density from Eucalyptus grandis trees (3 m x 2 m spacing) fertilized with potassium and sodium (at planting, 6 th and 12th month). Fifteen (15) 6 years old eucalyptus trees were selected (5 trees/treatment), cut and wood samples at DBH (1,3 m) were taken for anatomical characteristics (fiber and vessels) and wood density analysis. Results showed that eucalyptus trees treated with mineral fertilizers did not show significant alteration in average wood density, with radial profile model common to all three treatments, characterized by a values increase in the region next to the pith, toward to bark. Mineral fertilization influenced wood anatomical characteristics: treatment with sodium was characterized by thinner walls and lumen larger diameter; in treatment with potassium, larger vessels were detected.

【 授权许可】

Unknown