Case study: Microfibril angle and its relationship with basic density in Pinus taeda L. wood from silvopastoral systems
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 usi...
| Main Authors: | , , , |
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| Format: | info:ar-repo/semantics/artículo |
| Language: | Inglés |
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Associação Brasileira Técnica de Papel e Celulose
2018
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.12123/4090 http://www.revistaopapel.org.br/edicoes_impressas/71.pdf |
| _version_ | 1855035258585481216 |
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| author | Winck, Rosa Ángela Fassola, Hugo Enrique Tomazello, Mario Filho Area, Maria Cristina |
| author_browse | Area, Maria Cristina Fassola, Hugo Enrique Tomazello, Mario Filho Winck, Rosa Ángela |
| author_facet | Winck, Rosa Ángela Fassola, Hugo Enrique Tomazello, Mario Filho Area, Maria Cristina |
| author_sort | Winck, Rosa Ángela |
| collection | INTA Digital |
| description | 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 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. |
| format | info:ar-repo/semantics/artículo |
| id | INTA4090 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2018 |
| publishDateRange | 2018 |
| publishDateSort | 2018 |
| publisher | Associação Brasileira Técnica de Papel e Celulose |
| publisherStr | Associação Brasileira Técnica de Papel e Celulose |
| record_format | dspace |
| spelling | INTA40902018-12-14T16:51:14Z Case study: Microfibril angle and its relationship with basic density in Pinus taeda L. wood from silvopastoral systems Winck, Rosa Ángela Fassola, Hugo Enrique Tomazello, Mario Filho Area, Maria Cristina Pinus Taeda Hoyos Sistemas Silvopascícolas Densidad Pits Silvopastoral Systems Wood Density Microfibril Angle Angulo de Microfibrilla 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 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. EEA Montecarlo Fil: Winck, Rosa Angela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Montecarlo; Argentina Fil: Fassola, Hugo Enrique. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Montecarlo; Argentina Fil: Tomazello, Mario Filho. Universidade de São Paulo. Escola Superior de Agricultura Luiz de Queiroz; Brasil Fil: Area, Maria Cristina. Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina 2018-12-14T16:47:23Z 2018-12-14T16:47:23Z 2013-05 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/4090 http://www.revistaopapel.org.br/edicoes_impressas/71.pdf 0031-1057 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Associação Brasileira Técnica de Papel e Celulose O papel 74 (5) : 55 - 61. (May 2013) |
| spellingShingle | Pinus Taeda Hoyos Sistemas Silvopascícolas Densidad Pits Silvopastoral Systems Wood Density Microfibril Angle Angulo de Microfibrilla Winck, Rosa Ángela Fassola, Hugo Enrique Tomazello, Mario Filho Area, Maria Cristina Case study: Microfibril angle and its relationship with basic density in Pinus taeda L. wood from silvopastoral systems |
| title | Case study: Microfibril angle and its relationship with basic density in Pinus taeda L. wood from silvopastoral systems |
| title_full | Case study: Microfibril angle and its relationship with basic density in Pinus taeda L. wood from silvopastoral systems |
| title_fullStr | Case study: Microfibril angle and its relationship with basic density in Pinus taeda L. wood from silvopastoral systems |
| title_full_unstemmed | Case study: Microfibril angle and its relationship with basic density in Pinus taeda L. wood from silvopastoral systems |
| title_short | Case study: Microfibril angle and its relationship with basic density in Pinus taeda L. wood from silvopastoral systems |
| title_sort | case study microfibril angle and its relationship with basic density in pinus taeda l wood from silvopastoral systems |
| topic | Pinus Taeda Hoyos Sistemas Silvopascícolas Densidad Pits Silvopastoral Systems Wood Density Microfibril Angle Angulo de Microfibrilla |
| url | http://hdl.handle.net/20.500.12123/4090 http://www.revistaopapel.org.br/edicoes_impressas/71.pdf |
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