scholarly journals Soil Characterisation Assessment of the Acacia mangium Plantation at Dakoura, Linden

2020 ◽  
Vol 1 ◽  
pp. 28-28
Author(s):  
Stayon Woodroffe ◽  
◽  
Courtney Bullen ◽  
Keyword(s):  
Acacia Mangium

PEMANFAATAN KAYU AKASIA MANGIUM (Acacia mangium Willd) UNTUK MEBEL

2012 ◽  
Vol 4 (1) ◽  
pp. 1
Author(s):  
Djoko Purwanto
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Physical Properties ◽  
Treatment Process ◽  
Acacia Mangium ◽  
Physical And Mechanical Properties ◽  
Wood Fibers ◽  
Test Parameters ◽  
Mechanical And Physical Properties ◽  
Scale Scores

Timber Acacia mangium (Acacia mangium, Willd) for Furniture. The study aims to determine the mechanical and physical properties and the decorative value (color and fiber) wood of acacia mangium with using finishing materials. This type of finishing material used is ultran lasur natural dof ,ultran lasur classic teak, aqua politur clear dof, aqua politur akasia dan aqua politur cherry. After finishing the wood is stored for 3 months. Test parameters were observed, namely, physical and mechanical properties of wood, adhesion of finishing materials, color and appearance of the fiber, and timber dimensions expansion. The results showed that the mechanical physical properties of acacia wood qualified SNI. 01-0608-89 about the physical and mechanical properties of wood for furniture, air dry the moisture content from 13.78 to 14.89%, flexural strength from 509.25 to 680.50 kg/cm2, and compressive strength parallel to fiber 342.1 - 412.9 kg/cm2. Finishing the treatment process using five types of finishing materials can increase the decorative value (color and fiber) wood. Before finishing the process of acacia mangium wood has the appearance of colors and fibers and less attractive (scale scores 2-3), after finishing acacia wood fibers have the appearance of colors and interesting and very interesting (scale 4-5).Keywords: mangium wood, mechanical properties, decorative value, finishing, furniture.

SIFAT FISIK KAYU LAPIS BERBAHAN BAKU KAYU AKASIA (Acacia mangium Willd) DAN KELAMPAYAN (Anthocephalu spp)

2011 ◽  
Vol 3 (2) ◽  
pp. 1 ◽  
Author(s):  
Effendi Arsad
Keyword(s):  
Tensile Strength ◽  
Water Content ◽  
Acacia Mangium ◽  
Spreading Rate ◽  
Wood Material

The utilization of acacia and kelampayan wood as  plywood materials  were done. There are two kinds of treatments with two cores samples.  Wood core with thickness 2 mm and 3 mm with the spreading rate of adhesive  150 gr/m2, 200 gr/m2 and 250 gr/m2.   Resuls showed  that the  water content  of plywood  are 9,01% - 14,29%  for acacia and 9,17% - 10,58%   for kelampayan wood material.  The density of the plywood are 0,62 gr/cm3 – 0,73 gr/cm3  for acacia and 0,44 gr/cm3 – 0,57 gr/cm3.  for kelampayan wood material.  The tensile  strength of plywood are tensile strength of  plywood  are 9,49 kg/cm2 – 14,73 kg/cm2  for acacia and 8,61 kg/cm2 – 12,58 kg/cm2   for kelampayan wood material.Keywords: acacia, kelampayan,  the spreading rate of adhesive,  physics       characteristic,  plywood

Mixed-species plantations of Eucalyptus and Acacia mangium increase labile carbon and phosphorus levels in Ferralsol soils in the Cerrado biome, Brazil

2020 ◽  
Vol 82 (4) ◽  
pp. 342-351
Author(s):  
Wilbert Valkinir Cabreira ◽  
Marcos Gervasio Pereira ◽  
Fabiano de Carvalho Balieiro ◽  
Eduardo da Silva Matos ◽  
Renato de Aragão Ribeiro Rodrigues ◽  
...  
Keyword(s):  
Acacia Mangium ◽  
Mixed Species ◽  
Labile Carbon ◽  
Cerrado Biome ◽  
Phosphorus Levels

Near infrared spectroscopy of Eucalyptus pellita for foliar nutrients and the potential for real-time monitoring of trees in fertiliser trial plots

2021 ◽  
pp. 096703352110079
Author(s):  
Agustan Alwi ◽  
Roger Meder ◽  
Yani Japarudin ◽  
Hazandy A Hamid ◽  
Ruzana Sanusi ◽  
...  
Keyword(s):  
Near Infrared ◽  
Acacia Mangium ◽  
Nir Spectroscopy ◽  
Nutrient Status ◽  
Significant Loss ◽  
Eucalyptus Pellita ◽  
Operational Decision Making ◽  
Fertiliser Application ◽  
Planting Distance

Eucalyptus pellita F. Muell. has become an important tree species in the forest plantations of SE Asia, and in Malaysian Borneo in particular, to replace thousands of hectares of Acacia mangium Willd. which has suffered significant loss caused by Ceratocystis manginecans infection in Sabah, Malaysia. Since its first introduction at a commercial scale in 2012, E. pellita has been planted in many areas in the region. The species replacement requires new silvicultural practices to induce the adaptability of E. pellita to grow in the region and this includes relevant research to optimise such regimes as planting distance, pruning, weeding practices and nutrition regimes. In this present study, the nutritional status of the foliage was investigated with the aim to develop near infrared spectroscopic calibrations that can be used to monitor and quantify nutrient status, particularly total foliar nitrogen (N) and phosphorus (P) in the field. Spectra acquired on fresh foliage in situ on the tree could be used to predict N and P with accuracy suitable for operational decision-making regards fertiliser application. If greater accuracy is required, spectra acquired on dry, milled foliage could be used to predict N and P within a relative error of 10% (R2c, r2CV, RMSEP, RPD = 0.77, 0.71, 0.02 g 100/g, 1.9 for foliar P and = 0.90, 0.88, 0.21 g 100/g, 3.0 for foliar N on dry, milled foliage). The ultimate application of this is in situ nutrient monitoring, particularly to aid longitudinal studies in fertiliser trial plots and forest operations, as the non-destructive nature of NIR spectroscopy would enable regular monitoring of individual leaves over time without the need to destructively sample them. This would aid the temporal and spatial analysis of field data.

scholarly journals Color change and termite resistance of fast-growing tropical woods treated with kesambi (Schleichera oleosa) smoke

2020 ◽  
Vol 66 (1) ◽  
Author(s):  
Yusuf Sudo Hadi ◽  
Muh Yusram Massijaya ◽  
Dodi Nandika ◽  
Wa Ode Muliastuty Arsyad ◽  
Imam Busyra Abdillah ◽  
...  
Keyword(s):  
Color Change ◽  
Acacia Mangium ◽  
Chemical Compounds ◽  
Subterranean Termite ◽  
Subterranean Termites ◽  
Schleichera Oleosa ◽  
Termite Attack ◽  
Wood Resistance ◽  
Tropical Woods ◽  
Anthocephalus Cadamba

Abstract Smoke treatment can be used to enhance wood resistance to subterranean termite attack. In this study, kesambi (Schleichera oleosa) wood was pyrolyzed to produce charcoal. The smoke produced as a by-product of pyrolysis was used to treat sengon (Falcataria moluccana), jabon (Anthocephalus cadamba), mangium (Acacia mangium), and pine (Pinus merkusii) wood samples for 1, 2, or 3 weeks. Following the smoke treatment, the wood specimens were exposed to subterranean termites (Coptotermes curvignathus Holmgren) according to the Indonesian standard 7207-2014 in a laboratory. The color change caused by smoke treatment was observed, and chemical analysis of smoke was also done. The results showed that chemical compounds of kesambi smoke predominantly consisted of acetic acid, phenol, ketones, amines, and benzene. The color of smoked wood became darker, less yellow, and a little redder, while a longer smoking period produced a darker color which was more resistant to termite attack. Smoke treatment enhanced the resistance of wood to subterranean termite attack, and the resistance levels were not significantly different based on the duration of the smoke treatment.

scholarly journals Suitability of Hybrid Acacia Wood for Manufacturing Plywood and Particleboard

2012 ◽  
Vol 36 (2) ◽  
pp. 171-176 ◽  
Author(s):  
MM Rahaman ◽  
K Akhter ◽  
D Biswas ◽  
MW Sheikh
Keyword(s):  
Bending Strength ◽  
Unit Area ◽  
Urea Formaldehyde ◽  
Acacia Mangium ◽  
Solid Content ◽  
Timber Species ◽  
Press Temperature ◽  
Natural Crossing ◽  
Press Time ◽  
Academy Of Sciences

Hybrid acacia, produced from natural crossing between two introduced timber species Acacia mangium and A. auriculiformies has been studied for assessing the suitability of plywood and particleboard manufacture. It was found that 1.5 mm thick smooth and figured veneer can be made and dried easily. Three-ply plywood were made using veneer of this species bonded with liquid urea formaldehyde glue of 50% solid content extended with wheat flower and catalyzed (ammonium chloride) with 2% hardener under the specific pressures, viz., 1.05, 1.40 and 1.76 N/mm2 in three replications at 6 minute press time and 120°C press temperature. Dry and wet shear test were conducted on the sample and their shear load at failure per unit area and percentage of wood failure were determined. 1.76 N/mm2 pressure for the manufacture of ply wood is found to be the best. The particleboard was tested for determining the strength and dimensional stability. The bending strength passed the standard specification, tensile strength was found to be low as per Indian standard. DOI: http://dx.doi.org/10.3329/jbas.v36i2.12960 Journal of Bangladesh Academy of Sciences, Vol. 36, No. 2, 171-176, 2012

N2O emissions in Acacia mangium stands with different ages, in Sumatra, Indonesia

2021 ◽  
Vol 498 ◽  
pp. 119539
Author(s):  
Shigehiro Ishizuka ◽  
Seiichi Ohta ◽  
Taiki Mori ◽  
Ryota Konda ◽  
Yukari Gobara ◽  
...  
Keyword(s):  
Acacia Mangium ◽  
N2o Emissions ◽  
Different Ages
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