Qualidade da madeira serrada de cinco espécies de Eucalyptus resistentes à geada

Müller, Bruna Verediana; Rocha, Márcio Pereira da; Klitzke, Ricardo Jorge; Cunha, Alexsandro Bayestorff da; Silva, José Reinaldo Moreira da; França, Morgana Cristina; Nicoletti, Marcos Felipe

doi:10.12953/2177-6830/rcm.v10n1p57-70

Cited by 3 publications

(4 citation statements)

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“…Average gross yields obtained for E. dunnii and E. deanei between 48.34 and 61.35% after unfolding and between 45.10 and 56.70% after drying meet the values found for the genus in the literature, including those observed for species already recommended for the production of lumber in Brazil, such as E. grandis and E. saligna (MÜLLER et al, 2017). Different Eucalyptus clones, after the unfolding with an average yield of 44.49% for E. grandis and 48.29% for E. saligna were found by Anjos and Fontes (2017).…”

Section: Resultssupporting

confidence: 85%

“…Among the factors that influence the yield to be achieved, in addition to the characteristics inherent to the species, there are also the products to be obtained, machinery, available labor, quality and diameter of the logs to be processed (TSOUMIS, 1991). In this sense, the selection of logs through diametric classes and the establishment of cutting models for each of them, stand out as important strategies for optimizing yield and increasing productivity (MÜLLER et al, 2017). Juizo et al (2014) and Müller et al (2018), concluded in their studies that the unfolding method affects the yield of eucalyptus lumber, and the appropriate choice of processing techniques can mitigate the effects of the growth stresses, avoiding cracks in the sawn wood.…”

Section: Profile Of Sawmills In the Ubá Furniture Hub In The State Ofmentioning

confidence: 99%

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Profile of Sawmills in the Ubá Furniture Hub in the State of Minas Gerais

Castro

Costa

Filho

2020

Reveng

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The objective of this work was to identify, diagnose and characterize the sawmills in four municipalities in the State of Minas Gerais (Divinésia, Senador Firmino, Brás Pires and Dores do Turvo) that provide lumber for the industries in the Furniture Hub in Ubá, State of Minas Gerais. A semi-structured questionnaire with open questions, answered in loco and accompanied by a responsible person (interviewer), with information on the identification of the potentialities and fragilities of the local lumber sector as well as to know the raw material (logs), the wood split processes, the internal management, the qualification of the employees, the machinery, products, market and prospects of the sector in these municipalities. It was found that Eucalyptus wood is the most used. The diameter of the logs is shown as the factor that affects the yield in 100% of the analyzed sawmills, where cracking and variability of the logs are the main difficulties of working with the raw material. The lumber sector in the analyzed municipalities needs a greater qualification, both managerial and technical, to improve the activity. In addition, it is necessary to better organize the companies related to the lumber sector through associations and support from local entities and greater exposure of the products to the local consumers.

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Section: Resultssupporting

confidence: 85%

Section: Profile Of Sawmills In the Ubá Furniture Hub In The State Ofmentioning

confidence: 99%

Profile of Sawmills in the Ubá Furniture Hub in the State of Minas Gerais

Castro

Costa

Filho

2020

Reveng

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“…Still, its use in solid timber products should be intensified by the different advantages of eucalypts, since Eleotério et al (2015) have attributed this genus to a series of viabilities related to performances in processing and with their physical and mechanical properties. Also, other reason would be based on Müller et al (2017), which also emphasized that the Eucalyptus genus is a leading material source to replace Amazon woods, since De Araujo et al (2020) claimed an intense use of native lumber in traditional timber-based houses in Brazil.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Eucalyptus microcorys wood properties

et al. 2021

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Eucalypt varieties have been identified as multipurpose materials. With origins in those nations of Oceania, this genus has been applied for purposes such as pulp and paper, bioenergy, civil construction, and furniture. Very suitable as firewood and charcoal, Eucalyptus microcorys would have good potentialities as structural solutions for construction. But, this wood species is not easily found as building parts in the Brazilian market. This paper aimed to develop a broad evaluation of this species to highlight their features for the utilization as structural lumber. Based on the Brazilian standard document on wooden structures, sixteen properties were evaluated to emphasize such potentialities. Using two moisture contents, these conditions were adopted to identify each wood property at green and dried points. About 966 repeats were realized in these tests. Nine properties showed influences with the moisture reduction as well as perceptible increases in their resistances: static bending, parallel and perpendicular compressions, and parallel tensile in the modulus of rupture; perpendicular compression and parallel tensile in the modulus of elasticity; and, shear stress and hardness properties in parallel and perpendicular directions. Eucalyptus microcorys wood reached good resistance properties, justifying its potentiality for construction in structural uses.

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“…The average wood density is 0.491 g.cm -³ at ten years of age, and E. dorrigoensis has similar properties to other species already used for pulp and paper production, such as Eucalyptus dunnii. Another benefit of E. dorrigoensis is the quality of its sawn wood, with low rates of defects after drying, offering a good alternative to other species used for this purpose in Southern Brazil (Müller et al, 2017). In addition, E. dorrigoensis presents moderate resistance to attacks of the insect Thaumastocoris peregrinus (bronze bug) (Smaniotto et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Genetic control of productivity and genotypes by environments interaction for Eucalyptus dorrigoensis in southern Brazil

Munhoz¹,

Santos²,

Valente³

et al. 2021

CERNE

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Background: Eucalyptus dorrigoensis withstands cold weather and the occurrence of frost, making it a potential species for improvement programs in Southern Brazil where such conditions occur. However, the use of the species is still uncommon and its genetic variability remains poorly understood.d. Results:For site called Sertão Santana, the narrow sense heritability ranged from 0.46 (H) to 0.64 (MAI) and for Lavras do Sul it ranged from 0.38 (H) to 0.47 (MAI). The coefficient of genetic variation varied from 8.1% (H) to 26.1% (MAI). There is significant genetic correlation between DBH and MAI, reaching a value of 0.97. The GxE interaction was significant and mostly complex (78.7%). The best genetic materials for each environment, along with the most stable genetic materials, were identified. In addition, a thinning simulation was performed and the genetic gains for Sertão Santana and Lavras do Sul were 12.62 and 7.43%, respectively. Conclusion:The studied populations have genetic variability that can be used in breeding programs by selecting among progenies and individuals within progenies. The GxE interaction is complex, and as such, the best genetic material should be selected independently for each site. The results of this study have practical implications for the companies and offer advances in knowledge of the species for breeding programs.

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Qualidade da madeira serrada de cinco espécies de Eucalyptus resistentes à geada

Cited by 3 publications

References 0 publications

Profile of Sawmills in the Ubá Furniture Hub in the State of Minas Gerais

Profile of Sawmills in the Ubá Furniture Hub in the State of Minas Gerais

Evaluation of Eucalyptus microcorys wood properties

Genetic control of productivity and genotypes by environments interaction for Eucalyptus dorrigoensis in southern Brazil

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