Vol 1, No 1 (2008)

Jurnal Ilmu Teknologi Hasil Hutan

Table of Contents

Articles

Evalina HERAWATI, Muh. YUSRAM MASSIJAYA, Naresworo NUGROHO
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Indonesia has various hardwood species which are known for their low permeability, means difficult to be flown by fluid.  The fluid absorption into wood is important especially in preservative treatments, in the treatment before slicing wood sampels for wood anatomy and in wetting air dried wood sampels for specific gravity analyses.

The low water absorption of wood are caused by the air presence in cell lumen which could block the water absorption into wood, and anatomy structure of wood itselves.  One methode to overcome this problem was vacuum treatment.

The aim of this research was to increase water absorption in cold water soak methode in 6 wood species (Pterocarpus indicus Willd, Nephelium lappaceum L., Artocarpus heterophyllus Lamk., Paraserianthes falcataria L., Shorea spp,  Dipterocarpus spp) through vacuum treatment.  The size of wood samples were    5 x 5 x 20 cm for cross section orientation, 5 x 5 x 10 cm for radial and tangential orientation with 3 replicants.  These wood samples were treated with 5 different treatments : vacuum treatment for 1 hour and cold water soak process for 24 hours (V), vacuum treatment for 2 hours and cold water soak process for 24 hours (VV), vacuum treatment for 3 hours and cold water soak process for 24 hours (VVV), vacuum treatment for 1 hour, cold wtaer soak for 1 hour, and vacuum treatment again for 1 hour and cold water soak process for 24 hours (VRV), dan vacuum and soaking treatment simultaneously for 5 hours and cold water soak process for 24 hours (VRVRV) and as control, without vacuum treatment, just cold water soak process for 24 hours.

The results of this research showed vacuum treatment could increase water absorption.  The highest value of moisture content was obtained at cross section direction in all wood species, followed by tangential and radial direction.  However, every wood species showed different reactions to these five different treatments.

 

Keywords: 

Istie SEKARTINING RAHAYU, Zahrial COTO
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Dina SETYAWATI, Yusuf SUDO HADI, Muh. YUSRAM MASSIJAYA, Naresworo NUGROHO
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Subterranean termite, Macrotermes, play important role on plant nutritive cycles through disintegration and decomposition of organic matter processes.  In the other hand, subterranean termite can cause wooden damage in the nature and human dormitory as well. Therefore, Macrotermes are potential pest and need to be controlled.  Effective pest-control of subterranean termite can be made when their species status and distribution are well known. This research is aimed to identify the status of species and the dispersal of Macrotermes at their natural habitat in order to explore natural bio-resources richness and as an effort towards effective pest-control due to increasing risk of attack.  Survey method was used termite samples were collected at four different locations which are defined by global positioning system (GPS).  Nest classification is according to Meyer et al. (2003). The nest mapping is based on the elevations of their natural habitat in Gunung Halimun Salak National Park (900-1000 asl), and (600-700 asl), Yanlappa sanctuary (200-300 asl), and Ujung Kulon Nasional Park (0-100 asl). Phylogenetic relationships analysis showed that subterranean termite Macrotermes in the natural forest community are belongs to one big group Macrotermes gilvus Hagen. Based on nest size, the colony of Macrotermes can be classified into three different sizes: large, medium, and small nest.  Large and medium nest can be found in large amount in Yanlappa sanctuary (15 and 23 colonies, respectively) and the majority of small nest occurred in Gunung Halimun Salak National Park at 900 asl (78 colonies). Temperature and humidity is the most environmental factor that can influence on termite and other factor is rain fall, soil structure, and plant vegetation.

 

Keywords:  Distribution, identify, Macrotermes gilvus Hagen, nest

Niken SUBEKTI, Dedy DURYADI, Dodi NANDIKA, Surjono SURJOKUSUMO, Syaiful ANWAR
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Surdiding RUHENDI
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Tekat DWI CAHYONO, Zahrial COTO, Fauzi FEBRIANTO
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