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Jurnal Ilmu dan Teknologi Kayu Tropis

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Published by Masyarakat Peneliti Kayu Indonesia

ISSN : - EISSN : 16933834 DOI : -

Core Subject : Agriculture,

Agriculture, Biological Sciences & Forestry

Jurnal ini mempublikasikan artikel asli baik penelitian dasar maupun terapan di bidang ilmu pengetahuan dan teknologi kayu, bahan berlignoselulosa bukan kayu, hasil hutan lainnya dan industri hasil hutan.

Arjuna Subject : -

Articles 316 Documents

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Natural Durability and Preservative Treatability of Mangium, Manii and Sengon Woods by Cold Soaking and Hot-Cold Soaking Methods Trisna Priadi; Gendis A Pratiwi
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 2 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The understanding of the natural durability and preservative treatability of woods from community forests/lands is paramount to prevent biodeterioration of the woods in its utilization. This research was aimed to determine the natural durability of community woods (mangium, manii, and sengon) against subterranean termites (Coptotermes curvignatus) and dry wood termites (Cryptotermes cynocephalus), and to determine their preservative treatability with Diffusol CB applied through cold soaking and hot-cold soaking preservation methods. The results showed that manii and mangium woods were more resistant from subterranean termites and dry wood termites compared to that of sengon wood. The penetration and retension of Diffusol CB by Hot-cold preservation were twofold of that by cold soaking preservation. Penetration and retension of preservative in sengon wood was the highest, more than threefold of those in mangium (the lowest preservative treatability).Keywords: dry wood termite, natural durability, preservative treatability, subterranean termite

Keefektifan Beberapa Spesies Cendawan Entomopatogen untuk Mengendalikan Rayap Tanah Coptotermes gestroi WASMANN (Isoptera: Rhinotermitidae) dengan Metode Kontak dan Umpan Effectiveness of Some Entomopathogenic Fungi Species as Bio-control Agent to Subterranean Termite Coptotermes gestroi WASMANN (Isoptera: Rhinotermitidae) Using Contact and Baiting Methods Desyanti Desyanti; Yusuf Sudo Hadi; Sulaeman Yusuf; Teguh Santoso
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 5, No 2 (2007): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Species of entomopathogenic fungi, i.e. Metarhizium anisopliae (Metsch.) Sorokin, Metarhizium brunneum Petch, Beauveria bassiana (Bals.) Vuillemin, Fusarium oxysporum Link and Aspergillus flavus Link were tested their effectiveness as bio-control against to subterranean termite Coptotermes gestroi Wasmann. Pure culture of each fungal species was stored in 40C. Before used, those fungi were recultured in Sabouraud Dextrose Agar with Yeast Extract (SDAY) media and incubated in 240C and RH 95% for 3 weeks. The series of conidial density has been used (0, 107, 5x106, 106, 5x105 and 105 conidia/ml) for pathogenicity test. The LC95 of M. brunneum was used for contact and baiting methods and the bioassay was repeated four times. The data was analyzed using ANOVA and with DNMRT. The lethal concentration (LC) and lethal time (LT) were calculated using probit analysis. The results revealed that increase of conidial density of each fungi species caused more mortality of C. gestroi. All fungi species could cause mortality of C. gestroi more than 80% even with the density of 5x106 conidia/ml, however M. brunneum could causing mortality more than 80% at density of conidia as low as 5x105 conidia/ml. Based on the probit analysis, the value of LC50 and LT50 with contact method were calculated at 1.8 x 105 conidia/ml and 2.01 (1.52 ~ 2.40) days respectively.

Physical and Mechanical Properties of Particleboard Made from Jatropha (Jatropha curcas) Fruit Hulls Reinforced with Wood Particle Apri H Iswanto; Fauzi Febrianto; Yusuf Sudo Hadi; Surdiding Ruhendi; Dede Hermawan
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 10, No 2 (2012): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The objective of this research was to evaluate the properties of particleboard made from mixtures of jatropha fruit hulls (JFH) and wood particle in several mixture ratios. JFH, and mangium wood (Acacia mangium Wild) particle were untreated and treated with 1% acetic acid solution for 24 h. Urea formaldehyde (UF) resin with 10% resin content (SC: 63%) was used as binder. The ratio of JFH and wood particles were set at 100:0, 70:30, 60:40, 50:50, and 0:100. The target density of particleboard was set at 0.70 g cm-3. The temperature and pressure of hot pressing were set at 130 ºC and 2.544 N mm-2 for 10 minutes. The physical and mechanical properties of particleboard were evaluated according to JIS A 5908-2003 standard. The result indicated that addition of untreated mangium wood particle onto JFH particles improved mechanical properties of board especially modulus of elasticity (MOE) and modulus of rupture (MOR) parameters. However, the internal bond (IB) parameter was found to decrease with addition of wood particle. The higher amount of wood particle added resulted in the better the MOR and MOE parameters. Addition of acetic acid treated mangium wood particle onto JFH particleboard resulted in lower physical and mechanical properties.Key words: Jatropha curcas, fruit hulls, particleboard, wood particle

Presentase Kayu Teras dan Kayu Gubal serta Penentuan Kayu Juvenil dan Kayu Dewasa pada Lima Kelas Umur Jati (Tectona grandis L.f.) The Percentage of Heartwood and Sapwood and Determination of Juvenile and Mature Wood on Five Age-Class of Teak (Tectona grandis L.f.) Atmawi Darwis; Rudi Hartono; Sansan Sarif Hidayat
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 3, No 1 (2005): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Teak wood is one of fancy woods with durability class I ~ II and strength class II and has very beautiful decorative value. The existence of heartwood has more value than sapwood, because of the color and its high natural durability. The high proportion of Teak heartwood will increase higher benefit and sale value (economic value). The existence of juvenile wood is generally less liked then mature wood because of its characteristics. However, determining juvenile wood is not as easy as determining heartwood from sapwood. One of the methods is to see the variation of fiber length from pith to bark.The purposes of this research were to find out the percentage of heartwood and sapwood and also to know the time when juvenile wood becoming mature wood on five age-class of Teak (I ~ V).The research results showed that during the increasing of teak age-class, the percentage of heartwood was also growing and on the contrary, the percentage of sapwood was decreasing. During the process of determining juvenile wood from mature wood, the result proved that on teak wood with the age-class I ~ II, the fiber length showed increment so that the process of forming into mature wood was not yet to be seen. While teak with the age-class III ~ V showed that the form of mature wood started to show up after the 11th or 12th annual increment

Identifikasi Fosil Kayu asal Bogor dan Lebak (Identification of Wood Fossil from Bogor and Lebak) Andianto Andianto; Agus Ismanto
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 15, No 1 (2017): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Fossil wood is a heritage of flora history from a certain area. Species determination and age estimation are conducted on two sample of fossil wood which are collected from Bogor and Lebak districts. Anatomical features on transversal, radial and tangential sections were identified using microscope of Imager-A1m type. Anatomy description refers to the International Association of Wood Anatomists (IAWA) list of microscopic features for hardwood identification. The age estimation of the fossil wood was determined based on geological map analysis. The identified anatomical features of the first sample is vessels which mostly solitaire, radial and diagonal multiples; diffuse, vasicentric, confluent and narrow bands or lines up to three cells wide parenchyma; axial resin canals are arrayed in long tangential lines. These anatomical characteristics are belonging to Shoreoxylon sp. (meranti). The identified anatomical characteristics of the second sample is exclusively solitary vessels; diffuse and vasicentric parenchyma; and possesses tangential resin canals with diameter smaller than vessel diameter. These anatomical characteristics are owned by Dryobalanoxylon sp. (kamper). The age estimation of the wood fossils are 2.5 to 0.01 million years old (early to middle Pleistocene period).Keywords: Bogor, Dryobalanoxylon, fossil wood, Lebak, Shoreoxylon

Keandalan Papan Lapis dari Kayu Damar (Agathis loranthifolia Salisb.) Terpadatkan sebagai Pelat Buhul pada Arsitektur Konstruksi Atap Kayu The Strength of Densified Agathis (Agathis loranthifolia Salisb.) Plyboard as Gusset in Wood Roof Construction Rilatupa, James; Surjokusumo, Surjono; Nandika, Dodi
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 2, No 1 (2004): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Jurnal Ilmu dan Teknologi Kayu Tropis

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The aim of this research is to know the densified agathis plyboard characteristics and reliability is used for semi isotropic gusset in wood roof construction, and also to look for suitable models of its connectors for roof construction. The material use for this research is agathis board with dimension of 36 cm (L) x 12 cm (T) x 2 cm (R). This board has been densified until it reached 1 cm in thickness (R). Glue used for this research is epoxy with the trade name Eurepox-710 (resin) and mixed with Euredur-140 (hardener). The bolt used for the testing of embedded strength is bolt St.37 with diameter of 11.12 mm.The result showed that densification could increase physical nature and mechanical strength. The physical nature and mechanical strength also indicated that densified agathis board could be used as gusset in wood roof construction. Results of bolt embedded strength and its ANOVA showed that the gusset of densified agathis plyboard will be reliable for each connection angles, and indicated that the Hankinson theory could not be implemented to forecast the bolt embedded strength for another connection angles. Based on questioners model of the gusset will revealed which is in accordance with the roof construction as issued for the second drawing of the gusset for each connection type. This model has been considered to posses aesthetical and harmonically features wood roof construction of a building

Fortifikasi Perekat Lateks Karet Alam-Stirena dengan Isosianat: Karakteristik dan Aplikasinya pada Kayu Lapis (Fortification of Natural Rubber Lateks-Styrene with Isocyanate: Characteristics and its Application for Plywood Adhesive) Widya Fatriasari; Surdiding Ruhendi
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 8, No 2 (2010): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

This study was to evaluate the blending composition effects of natural rubber lateks-styrena (NRL-St)/isocyanate adhesive on their properties and sengon plywood quality. The blending mixture consists of 100/0, 90/10, 80/20, 70/30 and 0/100. Physico-chemical properties of these adhesives in therms of solid content (gravimetric method), pH (pH indicator paper), viscosity (Viscometer Brookfield), and contact angle (Motic software) were characterized. The bond strength (SNI 01-2704-1992) and formaldehyde emission (WKI bottle method) of plywood were also determined. Isocyanate fortification increased the solid content and viscosity of adhesive mixture, while pH was vice versa. The contact angle of adhesive mixture was about 450.Isocyanate fortification onto NRL-St improved plywood bond strength and significant improvement was happened on the composition of 80/20. Plywood hot pressing for 5 minutes increased the bond strength until isocyanate fortification 20%, while 10 minutes hot pressing also improved the bond strength on all of the composition adhesive. Only adhesive mixture of 70/30 that gave the lowest formaldehyde emission and fulfiled E1 standard (<0.1 ppm). Generally,the increasing of hot pressing time tended to decrease formaldehyde emmision of plywood. Bond strength of plywood fulfill SNI standard and E1 standard was isocyanate fortification of 30%.

Trace Elements Measurement of Mangium Wood (Acacia mangium) by AAS Nyoman J Wistara; Evelin Yustiana
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 12, No 1 (2014): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The ash and metals content of Acacia mangium Wild was determined following standard procedures of TAPPI T211 om-93 test method and wet ashing procedures with HNO3 and HClO4 solution, respectively. Measurements of trace elements were carried out by the use of atomic absorption spectrometry (AAS). Although it was fluctuating, the lowest ash content was found in a 5 years old wood and then tended to increase in older three. In the 3 and 5 years old wood, the ash content decreased from upper end to the lower end of the stems. In the 7 and 9 years old wood, the lowest ash content was in the middle part and it tends to increase to the lower end of the stem. Ash content of sapwood was higher than that of heartwood. The content of Mg decreased with increasing age of wood, and other metals tended to increase with the increase of wood age. Metallic components of acacia wood tended to accumulate more in sapwood compared to these in heartwoods. Vertically, the content of Mg and Cu decreased from upper end to lower end of the stems, and in contrary to these of other metals.Key words: atomic absorption spectrometry, Acacia mangium, closed loop cycle, metallic contents, oxygen-based bleaching

Surface Quality of Commercially Manufactured Particleboard Panels in Indonesia Salim Hiziroglu; Yusuf Sudo Hadi; Dede Hermawan
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 6, No 1 (2008): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

This study is an attempt to evaluate surface roughness of commercially manufactured particleboard in Indonesia. Four different types of particleboard panels were used to measure their surface roughness on a stylus type of profilometer. Three roughness parameters, namely average roughness (Ra), mean peak-to-valley height (Rz), and maximum roughness (Rmax) were employed to quantify roughness of the samples. Panel type-D had the roughest surface characteristics with an average Ra value of 14.20 µm while panel type-A had the smoothest corresponding value of 6.13 µm. Panel types C and D had relatively rough surface as compared to surface of typical commercially manufactured particleboard panels due to having large particles on the surface layers. In further studies surface roughness of such samples could be investigated following a sequence of sanding process to improve their surface qualities.

Natural Durability of Nine Woods Species Grown in Dramaga Campus Bogor Agricultural University against Termite Attacked fauzi Febrianto; Andi Z Pranata; Arinana Arinana; Adiyantara Gumilang
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 11, No 1 (2013): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

The objective of this research was to evaluate the natural durability of nine Indonesia lesser known species against subterranean termite (Coptotermes curvignathus Holmgren) and dry wood termite (Cryptotermes cynocephalus Light) attacked grown in Dramaga campus, Bogor Agricultural University. Sap and hearth wood parts of mangium, durian, nangka, angsana, afrika, rukam, trembesi, bisbul, and ki sampang woods with diameter around 13-30 cm were used in this experiment. Evaluation of natural durability of wood referred to SNI 01-7207-2006. The hearth wood of nangka wood was the most durable wood against C. curvignathus attacked and it was classified into 2nd class. Bisbul, rukam and trembesi woods both sap and herath wood and heart wood of angsana wood were classified into 3rd class. Mangium and afrika woods both sap and hearth woods were classified into 4th class. Ki sampang and durian woods both sap and hearth woods and sap wood of nangka and angsana woods were classified into 5th class. All the 9 woods species (i.e. rukam, bisbul, mangium, ki sampang, afrika, nangka, durian, angsana and trembesi woods) both sap and hearth wood parts were moderately resistance to C. cynocephalus and they were classified into 3rd class.Key words: dry wood termite, hearth wood, lesser known species, natural durability, sap wood, subterranean termite

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