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Abstract
The material resulting from fast-growing plantations is presumed to present a high percentage of juvenile wood, with high microfibril angle (MFA) and low basic density (BD), which would negatively affect the technological properties of wood. The objective of this study was to measure the MFA using the technique of the orientation of bordered and cross-field pit apertures of the tracheids walls, determine BD and verify the correlation between the two [ver mas...]
dc.contributor.authorWinck, Rosa Ángela
dc.contributor.authorFassola, Hugo Enrique
dc.contributor.authorTomazello, Mario Filho
dc.contributor.authorArea, Maria Cristina
dc.date.accessioned2018-12-14T16:47:23Z
dc.date.available2018-12-14T16:47:23Z
dc.date.issued2013-05
dc.identifier.issn0031-1057
dc.identifier.urihttp://hdl.handle.net/20.500.12123/4090
dc.identifier.urihttp://www.revistaopapel.org.br/edicoes_impressas/71.pdf
dc.description.abstractThe material resulting from fast-growing plantations is presumed to present a high percentage of juvenile wood, with high microfibril angle (MFA) and low basic density (BD), which would negatively affect the technological properties of wood. The objective of this study was to measure the MFA using the technique of the orientation of bordered and cross-field pit apertures of the tracheids walls, determine BD and verify the correlation between the two variables. The used material was Pinus taeda 15 years old from a stand with silvopastoral management. The pit apertures of the earlywood tracheids showed to be more rounded and abundant compared to those of the latewood. The MFA decreased from 56.2 to 42.1 degrees, and wood density increased from 0.31 to 0.42 g/cm3 from the pith to the bark. The high values of MFA could be explained by the genetic material with low degree of breeding, and also by the wide spacing between trees - which favors the fast growth -, but could also be due to the employed methodology. The correlation between MFA and density in this study is moderate and negative (R= -0.59), indicating that density would not be a parameter sufficient to infer about the structural quality of the wood.eng
dc.formatapplication/pdfeng
dc.language.isoeng
dc.publisherAssociação Brasileira Técnica de Papel e Celulosees_AR
dc.rightsinfo:eu-repo/semantics/openAccesseng
dc.sourceO papel 74 (5) : 55 - 61. (May 2013)por
dc.subjectPinus Taedaes_AR
dc.subjectHoyoses_AR
dc.subjectPitseng
dc.subjectSistemas Silvopascícolases_AR
dc.subjectSilvopastoral Systemseng
dc.subjectWood Densityeng
dc.subjectDensidades_AR
dc.subject.otherMicrofibril Angleeng
dc.subject.otherAngulo de Microfibrillaes_AR
dc.titleCase study: Microfibril angle and its relationship with basic density in Pinus taeda L. wood from silvopastoral systemseng
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.description.origenEEA Montecarloes_AR
dc.description.filFil: Winck, Rosa Angela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Montecarlo; Argentinaes_AR
dc.description.filFil: Fassola, Hugo Enrique. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Montecarlo; Argentinaes_AR
dc.description.filFil: Tomazello, Mario Filho. Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz; Brasiles_AR
dc.description.filFil: Area, Maria Cristina. Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentinaes_AR
dc.subtypecientifico


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