Produção e Avaliação da Qualidade de Lâminas de Madeira de um Híbrido de Pinus elliottii var. elliottii × Pinus caribaea var. hondurensis

Almeida, Natalie Ferreira de; Bortoletto, Geraldo; Mendes, Rafael Farinassi; Surdi, Paula Gabriella

doi:10.4322/floram.2014.022

Cited by 4 publications

(3 citation statements)

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“…were used, being the first used as a reference because it is a timber species traditionally used in the South Brazil plywood production (Iwakiri et al, 2000). Pinus is a species that is the object of studies for diversified products and including hybrids with other species of the genus (Almeida et al, 2014).…”

Section: Log Resources Rotary Peeling and Yieldmentioning

confidence: 99%

Production of Plywood Panel for Exterior Use With Paricá and Embaúba Timbers

et al. 2018

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This research objective was to evaluate the technical feasibility of using Schizolobium amazonicum Huber ex Ducke (Paricá) and Cecropia palmata Willd (Embaúba) timbers for the production of veneers and external plywood using two types of adhesives: phenol-formaldehyde and tannin-formaldehyde, and different veneer compositions. The trees were harvested in a planted forest area from gap enrichment in the municipality of Dom Eliseu, Pará state. The Pinus elliottii timber was used as the reference and was donated by a company located in the municipality of Irati, Paraná state. The panels were produced with pure timber of the three species, and two combinations between the paricá and embaúba species, using a resin weight of 145 g m 2 in single line. The veneers yield for the paricá was 80.03% and that of the embaúba 46.37%; The panels produced with pure embaúba timber, or in combination with paricá timber, and bonded with phenol-formaldehyde, presented satisfactory technological properties for external use and were the compositions that presented better properties. The best adhesive for the panels was phenol-formaldehyde, as the tannin-formaldehyde did not present good performance in the weight used in this study.

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Section: Log Resources Rotary Peeling and Yieldmentioning

confidence: 99%

Production of Plywood Panel for Exterior Use With Paricá and Embaúba Timbers

et al. 2018

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“…W.H. Barrett & Golfari, de alto potencial sob o ponto de vista silvicultural no que diz respeito à produção de madeira (ALMEIDA et al, 2012) e na produção de painéis compensados para emprego na construção civil, fabricação de móveis, embalagens e caixas (ALMEIDA et al, 2014(ALMEIDA et al, , 2012SURDI et al, 2015).…”

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Análise dialélica na avaliação do potencial de híbridos de Pinus elliottii x Pinus caribaea para a formação de populações de melhoramento

Tambarussi¹,

Marques²,

Andrejow³

et al. 2018

Sci. For.

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Uma das dificuldades no melhoramento florestal é o longo ciclo de seleção de materiais genéticos superiores em qualidade e produtividade, problema que pode ser contornado via seleção precoce de híbridos. O objetivo da presente pesquisa foi estimar os parâmetros genéticos para caracteres silviculturais e verificar a viabilidade da seleção precoce em híbrido de Pinus elliottii x Pinus caribaea, visando a formar uma população base de melhoramento. O experimento foi estabelecido em delineamento em blocos ao acaso, com seis blocos, parcelas lineares de seis plantas e 24 tratamentos (21 progênies de polinização controlada e três testemunhas). Os caracteres diâmetro à altura do peito (DAP) e altura total (H) foram avaliados no quarto e oitavo ano após o plantio. Os quadrados médios referentes às capacidades geral (CGC) e específica (CEC) de combinação foram significativos para a H aos quatro e oito anos e para DAP aos oito anos. As diferenças significativas entre os tratamentos indicam a existência de variação genética, sugerindo a possibilidade de ganhos com a seleção. As correlações genéticas entre caracteres e entre idades foram altas, variando de 0,96 a 0,99, indicando que a seleção precoce pode ser uma ferramenta efetiva para implantação de uma população de melhoramento para o híbrido.

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“…The disadvantage of this is greater veneer compaction during pressing. On the other hand, soft woods can facilitate the lamination process (Almeida et al, 2014).…”

Section: Wood Basic Densitymentioning

confidence: 99%

Juvenile Wood from Pinus patula Schltdl & Cham for Multilaminated Panel Production

et al. 2020

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Wood scarcity, attacks by primates and insects, and fungal damage in forest plantations make the introduction of new species necessary. Given this, it is important to understand the potential uses of wood in the production chain. Pinus patula Schltdl & Cham presents good adaptation to Brazilian conditions and is a candidate for wood supply. Its juvenile wood density however, is lower than that of other pine species. This study aimed to evaluate the properties of veneer on panels produced with twelve-year old P. patula wood compared with panels produced with P. taeda wood of the same age, which is commonly used for panel production. Panels were bonded with urea-formaldehyde and phenol-formaldehyde adhesives using veneers applied on two types of plywood panel. The P. patula panels showed lower strength, stiffness and density when bonded with urea-formaldehyde, and higher strength, density and stiffness when bonded with phenol-formaldehyde in comparison with P. taeda. P. patula panels can be used for multilayer panel production.

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Produção e Avaliação da Qualidade de Lâminas de Madeira de um Híbrido de Pinus elliottii var. elliottii × Pinus caribaea var. hondurensis

Cited by 4 publications

References 0 publications

Production of Plywood Panel for Exterior Use With Paricá and Embaúba Timbers

Production of Plywood Panel for Exterior Use With Paricá and Embaúba Timbers

Análise dialélica na avaliação do potencial de híbridos de Pinus elliottii x Pinus caribaea para a formação de populações de melhoramento

Juvenile Wood from Pinus patula Schltdl & Cham for Multilaminated Panel Production

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