Determination of juvenile and mature transition ring for fast growing sengon and jabon wood

Darmawan, Wayan; Nandika, Dodi; Rahayu, Istie; Fournier, Mériem; Marchal, Roland

doi:10.1007/s13196-013-0091-x

Cited by 32 publications

(37 citation statements)

References 6 publications

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“…MFA was determined from measurements on 3 microfibrils of an image of the cell. The MFA and fiber dimension measurements were in accordance with modified-method of Wahyudi et al (2014) and Darmawan et al (2013).…”

Section: Microfibril Angle (Mfa) Measurementmentioning

confidence: 99%

“…Bole heights and diameters are affected by various factors, such as environment restriction (Larson 1969;Antonova and Stasova 1993;Lindström 1996). Previous studies on determination of juvenile transition to mature wood used several indicators such as density, specific gravity, MFA, fiber length, and mechanical traits (Evans et al 2000;Koubaa et al 2005;Clark et al 2006;Adamopoulos et al 2007;Darmawan et al 2013). This study was focus on specific gravity, moisture content, MFA, fiber cell wall thickness and fiber length in order to determine transition from juvenile to mature wood.…”

Section: Second Order Polynomial (Quadratic)mentioning

confidence: 99%

“…fiber length) from pith to bark and visually determine the juvenile point (Clark et al 2006). Another method is mathematical approach, such as segmented-regression (Tasissa and Burkhart 1998;Darmawan et al 2013), polynomial equation (Koubaa et al 2005) and modified exponential curve with linier and non-linier equation (Bahtiar and Darwis 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Segmented-regression analysis on cell length and microfibril angle (MFA) showed jabon start to produce mature wood after 7 years (Darmawan et al 2013). Therefore, this study assigned 8 and 10 years old samama wood.…”

Section: Introductionmentioning

confidence: 99%

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The quality of 8 and 10 years old samama wood (Anthocephalus macrophyllus)

Cahyono

Wahyudi

Priadi

et al. 2015

J Indian Acad Wood Sci

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In the near future, wood demand will be fulfilled by local fast growing woods from community forest. Among those, samama (Anthocephalus macrophyllus) is an endemic wood in Celebes and Moluccas. This species has been cultivated throughout Indonesia and usually harvested at age of less than 10 years. This research was conducted to examine the quality of samama wood at 8 and 10 years old. Each age group was represented by three healthy trees. Samples were made from 1 cm segmentation from pith to bark. Modified exponential curve was used to determine the transition of juvenile and mature wood in which maturity limit was achieved when growth parameter had reached the asymptote line. The quality parameters were specific gravity, moisture content, fiber length, fiber wall thickness and microfibril angle. The result showed that the first 6-8 segmentations from the pith were still juvenile, while the subsequent segments were mature wood. The 8 years old had 33.3-38.9 % of juvenile portion, while it was only 30.4-34.8 % in the 10 years old. This finding will be important in considering a proper technology for samama wood processing.

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Section: Microfibril Angle (Mfa) Measurementmentioning

confidence: 99%

Section: Second Order Polynomial (Quadratic)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The quality of 8 and 10 years old samama wood (Anthocephalus macrophyllus)

Cahyono

Wahyudi

Priadi

et al. 2015

J Indian Acad Wood Sci

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“…The wood properties of these species have been investigated by many researchers (Wahyudi et al 1999, Honjo et al 2005, Ishiguri et al 2007, 2012a, Kojima et al 2009a, b, Makino et al 2012, Nugroho et al 2012, Darmawan et al 2013). On the other hand, Istikowati et al (2014) examined growth and wood properties in less-utilized-fastgrowing tree species found in a secondary forest naturally regenerated in South Kalimantan, Indonesia.…”

Section: Introductionmentioning

confidence: 99%

Effects of radial growth rate on anatomical characteristics and wood properties of 10-year-old <i>Dysoxylum mollissimum</i> trees planted in Bengkulu, Indonesia

Ishiguri

Aiso

Hirano

et al. 2016

Tropics

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The growth characteristics, anatomical characteristics, and wood properties of Dysoxylum mollissimum, a fastgrowing tree species, were investigated. To clarify the effect of radial growth rate on these characteristics and properties, 10-yearold trees planted in Bengkulu, Indonesia were examined and classified into three categories (fast-, medium-, and slow-growing). Xylem maturation type was also evaluated in this species. The mean values of stem diameter, tree height, stem volume, and stresswave velocity in the 50 measured trees were 18.0 cm, 10.6 m, 0.119 m 3 , and 3.48 km s 1 , respectively. Mean values of anatomical characteristics and wood properties in nine selected trees were as follows: vessel diameter, 129 µm; vessel frequency, 3.5 vessels mm 2 ; cell wall thickness of wood fiber, 1.2 µm; percentages of vessels, wood fiber, ray parenchyma, axial parenchyma, and cell wall, 8.8, 72.9, 12.4, 5.9, and 33.5%, respectively; vessel element length, 0.36 mm; wood fiber length, 1.04 mm; basic density, 0.45 g cm 3 ; and compressive strength parallel to the grain in green condition, 29.9 MPa. These obtained values were similar to or smaller than previous results obtained in research on other Dysoxylum spp. For almost all of the anatomical characteristics and wood properties, no significant differences among the categories were found. This suggests that the trees with faster radial growth characteristics do not always produce lower quality wood in this species. Judging from the radial variation of anatomical characteristics, the xylem maturation of this species depends on the diameter growth, and it might occur at around 6 to 8 cm from the pith.

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