Planting density effect on some properties of Schizolobium parahyba wood

Melo, Luiz Eduardo de Lima; Silva, Cláudia de Jesus; Protásio, Thiago de Paula; Mota, Graciene da Silva; Santos, Iêdo Souza; Urbinati, Cláudia Viana; Trugilho, Paulo Fernando; Mori, Fábio Akira

doi:10.4067/s0718-221x2018005003901

Cited by 7 publications

(6 citation statements)

References 40 publications

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“…Wood density had a weak and positive correlation with poplar growth traits within each planting density. Similar results with no significant effect of initial plantation density on wood's basic density were presented by Melo et al [10] and Cassidy et al [11]. A negative relationship between wood density and initial plantation density was found for Hevea brasiliensis by Naji et al [5].…”

Section: Introductionsupporting

confidence: 80%

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Effect of Plantation Density on Some Physical and Technological Parameters of Scots Pine (Pinus sylvestris L.)

Sharapov,

Demakov,

Korolev

2024

Forests

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The issue of optimising the initial stand density (ISD) of tree plantations has high practical importance. The objective of this study was to non-destructively evaluate the influence of the initial stand density of Scots pine (Pinus sylvestris L.) plantations located in the European part of the Russian Federation on wood basic density (BD), moisture content (MC), ultrasound velocity (UV), latewood content, and drilling resistance (DR). The trees at the age of 45 years with initial plantation densities of 500, 1000, 3000, 5000, and 10,000 trees/ha were tested by a 5 cm-long core sample for gravimetric MCGM and BD by PULSAR-2.2 for UV along the height (UVH) and through the tree trunk diameter (UVD) by the IML-RESI PD-400 tool for DR, as well as by GANN HT 85T for MC based on the electrical-resistance method (MCERM). A significant influence of ISD was found on DBH, UVD, MCGM, and MCERM. ISD had no significant impact on BD, UVH, and DR. The wood BD ranged from 356 to 578 kg·m−3 with a mean value of 434 ± 3.3 kg·m−3 and was restricted by the soil and environmental factors. DBH and 70% MCERM were good indicators of tree vitality. Linear correlations between DBH and MCERM (R2 = 0.67), DBH and MCGM (R2 = 0.74), DR and BD (R2 = 0.71), and the two-factor model MCGM = f(DBH, BD) with R2 = 0.76 were found.

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Section: Introductionsupporting

confidence: 80%

“…Research literature contains extensive discussion on the issue of stand density optimisation, which is utterly important from a practical standpoint. The multifaceted nature of the problem and a wide range of possible solutions account for why it has not lost its relevance [1][2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Effect of Plantation Density on Some Physical and Technological Parameters of Scots Pine (Pinus sylvestris L.)

Sharapov,

Demakov,

Korolev

2024

Forests

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“…Tropical species such as Anadenanthera peregrina, Ochroma pyramidale, and Schizolobium parahyba Var amazonicum showed the same type of increasing radial variation from pith to bark as J. copaia (Rueda and Williamson, 1992;Valente et al, 2013;Lobão et al, 2012) and the same behavior was found in tropical forest plantation species such as Guazuma crinita, Schizolobium parahyba, Tectona grandis, Toona ciliata, (Chavesta et al, 2020;Lima et al, 2021;Melo et al, 2018;Ribeiro et al, 2011). On the other hand, the tropical species Cariniana legalis also did not present any significant trend of radial variation in the pith-bark direction, the same as the species H. crepitans (Lima et al, 2011;Ribeiro et al, 2011), which does not exist a significant difference in the radial variation of wood in the species H. crepitans is favorable for industrial transformation processes (Plaster et al, 2008;Rios et al, 2018).…”

Section: Discussionmentioning

confidence: 71%

Radial variation of wood density and fiber morphology of two commercial species in a tropical humid forest in Southeastern Peru

Cahuana¹,

Pina²,

Tuesta³

et al. 2023

CERNE

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Background: Knowledge of the anatomy and properties of wood help to understand the quality of wood and plan its ideal technological use, therefore, it is necessary to understand the variations in wood characteristics and properties. Here we evaluate the radial variation of wood density and fiber morphology of two commercial forest species in a tropical humid forest of the department of Madre de Dios in Peru: Jacaranda copaia and Hura crepitans collected in a management area.Results: Forestry collecting 10 usable trees by species. We provide general values of the densities and fibers of the two species studied. Conclusions:Regarding the variation of the radial density, J. copaia presented a density growth in the pith-bark direction, while for H. crepitans its variation was not significant, these variations are clearly explained by the morphology of its fibers. HIGHLIGHTSThe Jacaranda copaia species presented an increase in density in the bark-pith direction, while for the Hura crepitans species there was no significant variation, these variations are explained by the fiber morphology of its fibers. The biomass of wood and the biomechanics of these species since density and fibers are directly related.

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“…Higher planting densities in poplar plantations achieve increased biomass with almost the same wood quality obtainable with lower densities based on our results. Contrasting results may be due to differences between species, environmental conditions, and the planting density tested [13]. For the fiber properties, the variation of FL within a planting density is controversial in woody species.…”

Section: Discussionmentioning

confidence: 99%

“…Ahmed et al [12] reported that the planting density influence on growth traits and wood properties is greater than that of the wood chemical composition. Research on guapuruvu [13] showed that planting density only significantly affected the fiber length (FL) and fiber wall thickness. Therefore, the initial planting density choice is crucial to maximize growth rate and optimize wood quality.…”

Section: Introductionmentioning

confidence: 99%

Effect of Initial Planting Density on Growth Traits and Wood Properties of Triploid Chinese White Poplar (Populus tometosa) Plantation

Sang

Gao

Kang

et al. 2021

Forests

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Planting density primarily affects the yield and wood quality of plantations. There are multiple reports on the effects of planting density on growth traits and wood properties in young triploid Chinese white poplar (Populus tomentosa) plantations. Nevertheless, assessment of the effects of initial planting density is lacking for plantations older than ten years. Here, an 11-year-old plant density trial (2490, 1665, 1110, 832, 624, 499, and 416 trees/hm2) established with four hybrid clones (S86, B301, B331 and 1316) in northern China was used to determine the effect of initial planting density on growth traits (diameter at breast height (DBH), tree height (H), stem volume (SV) and stand wood volume (SWV)), basic wood density (BWD), and fiber properties (fiber length (FL), fiber width (FW), and the ratio of fiber length to width (FL/FW)). A total of 84 trees from four clones were sampled. In this study, the initial planting density had a highly significant effect on growth traits (p < 0.001) and had a moderate effect on FL. Overall, the reduction in initial planting density led to the increase in DBH, H, SV, and FL/FW. Triploid hybrid clones planted at 416 trees/hm2 had the largest DBH, H, SV, FL/FW and the smallest SWV and FW. Clonal effects were also significant (p < 0.05) for all studied traits except for FL. Clone S86 had a higher growth rate and the largest BWD and FW. Clones–initial planting densities interaction was insignificant for all growth traits and wood properties. A weak and positive estimated correlation between BWD and growth traits (H, SV, SWV) within each planting density was seen. Our results demonstrate that an appropriate reduction in initial density in triploid Chinese white poplar plantations with long rotation is a suitable strategy to promote tree growth and retain excellent wood processing characteristics.

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Planting density effect on some properties of Schizolobium parahyba wood

Cited by 7 publications

References 40 publications

Effect of Plantation Density on Some Physical and Technological Parameters of Scots Pine (Pinus sylvestris L.)

Effect of Plantation Density on Some Physical and Technological Parameters of Scots Pine (Pinus sylvestris L.)

Radial variation of wood density and fiber morphology of two commercial species in a tropical humid forest in Southeastern Peru

Effect of Initial Planting Density on Growth Traits and Wood Properties of Triploid Chinese White Poplar (Populus tometosa) Plantation

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