Efeito do Espaçamento, Idade e Irrigação no Volume e Densidade Básica do Eucalipto

Moulin, Jordão Cabral; Arantes, Marina Donária Chaves; Oliveira, José Geraldo Lima de; Campinhos, Eduardo Nogueira; Gomes, Fabrício; Vidaurre, Graziela Baptista

doi:10.1590/2179-8087.073914

Cited by 11 publications

(7 citation statements)

References 7 publications

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“…According to Moulin et al (2017b), a high planting density results in greater competition for nutrients, water, and light, resulting in a lower basic density of the wood, corroborating the results found in this study. However, for energy purposes, a short cutting cycle and greater volume per area are essential for continuous production that meets local demand (SILVEIRA, REINER, SMANIOTTO, 2014).…”

Section: Resultssupporting

confidence: 91%

Effects of planting density on characteristics of sabiá wood

Pinheiro,

Alves,

Holanda

et al. 2024

Rev. Caatinga

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This study aimed to evaluate the biomass yield, volume, and basic density of Mimosa caesalpiniifolia Benth. wood in response to planting densities in 13-year-old trees. The research was conducted in Mossoró-RN using a randomized block design with three replications. Plants obtained from seeds collected from the natural vegetation of the Caatinga in Mossoró-RN were subjected to densities of 800 (5.0 m x 2.5 m), 1600 (2.5 m x 2.5 m), 2000 (2.0 m x 2.5 m), and 4000 (1.0 m x 2.5 m) plants ha-1. The following characteristics were assessed: plant height, diameter at breast height, cross-sectional area, basal area, individual volume, stere volume, aboveground biomass, and basic wood density. The dendrometric variables showed a high correlation with planting density. For DBH and cross-sectional area, higher values were observed in the lowest planting densities. The highest values of basal area, volume (m3), stere volume, and dry biomass per hectare were found at the highest planting density. Biomass allocation showed the sequence stem>branches>leaves, regardless of the planting density evaluated. The higher densities resulted in a higher basic density of the wood. The higher planting densities proved advantageous 13 years after planting due to the higher production of dry biomass, volume (m3), and stere volume per hectare.

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Section: Resultssupporting

confidence: 91%

Effects of planting density on characteristics of sabiá wood

Pinheiro,

Alves,

Holanda

et al. 2024

Rev. Caatinga

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“…Schwerz et al (2019) reported better growth efficiency for stands of Acacia mearnsii cultivated in southern Brazil using the denser spacing of 2.0 × 1.0 m compared to larger spacings of 2.0 × 1.5 m, 3.0 × 1.0 m and 3.0 × 1.5 m. The authors related the results to the greater amount of radiation intercepted by tree canopy in the denser spacings, which allows higher photosynthetic rate, and consequently greater radiation use efficiency for increasing forest biomass. Similar results were observed for different species and tree ages within the genera Eucalyptus (Berger et al 2002;Eufrade-Junior et al 2016;Moulin et al 2017) and Gmelina (Tenorio et al 2016).…”

Section: Discussionsupporting

confidence: 84%

Variations in productivity and wood properties of Amazonian tachi-branco trees planted at different spacings for bioenergy purposes

Silva

Bufalino

et al. 2019

J. For. Res.

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spacings (6.0 m 2 and 7.5 m 2 ). Genetic variability of the T. vulgaris seed stand and/or high heritability of wood traits overcame the effect of different spacing on all morphological, physical, chemical and energetic properties of T. vulgaris wood. This species has moderate basic density when cultivated at spacings larger than 6 m 2 and net heating value above 7.95 MJ/kg, which is suitable for bioenergy purposes. The high variation in wood properties within tree spacing is strongly indicative of great potential for genetic breeding. The fast growth and the suitable moderate wood basic density confirm the outstanding potential of homogeneous plantations of T. vulgaris for providing wood for bioenergy.

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“…However, although this statement and the growing spaces used in this study, equal to 2, 3 and 4.5 m², did not affect the property of static bending of Eucalyptus grandis wood, others researches concluded that larger plant spacing resulted in better technological properties [17] and, in the case of energy production by wood, larger plant spacing also became more attractive [18]. In general, the spacing has not shown influence on the wood mechanical properties may occur due to the fast rotation that is given to eucalyptus wood in pure stands, as occurred in the present study because it is a 7-year stand, because research has shown that in the first years the plant spacing does not change the characteristics that add quality to wood [8].…”

Section: Discussioncontrasting

confidence: 68%

Flexão estática de madeira de Eucalyptus grandis: espaçamento e efeito da variação radial

et al. 2020

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RESUMO Estudos que abordam os parâmetros tecnológicos da madeira de amplo uso, como Eucalyptus grandis, são fundamentais, uma vez que seu uso e exploração adequados dependem dessas características. Atualmente, o implante dessa espécie foi ampliado e o espaçamento é um fator determinante. Portanto, o objetivo do presente estudo foi avaliar o espaçamento das plantas e a variação radial na flexão estática da madeira de Eucalyptus grandis. Para a condução do experimento, foram amostradas seis árvores para cada espaçamento: 2,0 x 1,0 m, 3,0 x 1,0 e 0 x 1,5 m, totalizando 18 indivíduos aos sete anos de idade. Posteriormente, o primeiro registro de cada amostra foi seccionado em placas radiais e depois transformado em corpos de prova, identificados em intervalos regulares na direção da casca da medula, com dimensões de 2,5 x 2,5 x 41,0 cm, para realizar o teste de flexão estática mecânica, seguindo as recomendações da ASTM D-143. Os resultados da resistência mecânica mostraram uma variação na direção da casca da medula, onde os maiores valores de Módulo de Elasticidade (MOE), Módulo de Ruptura (MOR) e Tensão do Limite Proporcional (TPL) estavam próximos da casca. No entanto, o espaçamento não alterou o MOE, MOR e TLP do material submetido à flexão estática. Assim, apenas a posição radial influencia na qualidade da madeira. Os valores das propriedades mecânicas estudadas tiveram um aumento no sentido medula-casca, sendo mais acentuados na região próxima a casca.

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Efeito do Espaçamento, Idade e Irrigação no Volume e Densidade Básica do Eucalipto

Cited by 11 publications

References 7 publications

Effects of planting density on characteristics of sabiá wood

Effects of planting density on characteristics of sabiá wood

Variations in productivity and wood properties of Amazonian tachi-branco trees planted at different spacings for bioenergy purposes

Flexão estática de madeira de Eucalyptus grandis: espaçamento e efeito da variação radial

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