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Articles 7 Documents
Search results for , issue "Vol 22, No 4 (2004): Jurnal Penelitian Hasil Hutan" : 7 Documents clear
PENGAWETAN BAMBU TALANG SECARA SEDERHANA Novriyanti, Eka; Nurrohman 2), Edi
Jurnal Penelitian Hasil Hutan Vol 22, No 4 (2004): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2621.538 KB) | DOI: 10.20886/jphh.2004.22.4.223-230

Abstract

This research was conducted to examine the effectiveness of preserving bamboo with a Boron compound preservative. Four levels of concentrations, i.e 5,  10,  15,  and 20% were tested through simple method on bamboo talang (Schizostachyum brachycladum). Lower part of each culm was cut and debarked prior to one week soaking in the boric solution.  Results indicated that longitudinal penetration could reach 100%. Retention was varied in accord with boric concentration, but the 15%solution gave the highest retention. 
PENGGUNAAN ARANG KOMPOS PADA MEDIA TUMBUH ANAKAN MAHONI Komarayati, Sri
Jurnal Penelitian Hasil Hutan Vol 22, No 4 (2004): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2969.791 KB) | DOI: 10.20886/jphh.2004.22.4.193-203

Abstract

This report described  results of  an  application of  two  kinds of  compost charcoals on the growing media of mahoni seedlings(Swietenia rnacropbylla King)for  5-month duration. Objective of this study is to learn such applicationon  the characteristics of seedlings growth.The two kinds of compost charcoals were : the one derived from  tusam litters (Al)  ;  and the other from a mixture of litters and mahoni seeds  (A.2). Results  revealed that  the application of compost charcoal (A1  and A2)  each at 30% dosage could increase height of mahoni seedlings as much as 17.67 -  25.02 cm, which  Is  approximately  3 times greater than  the control.  The compost application also increased girth of mahoni seedling up to twice that of the controls.The application of compost charcoal at  40% dosage of either (Al)  or (A2), however, showed a  smaller increase in height and girth increament compared with the 30% dosage. Cummulatively,the application of compost charcoal could increase the seedling biomass by more than 400%.
SIFAT ANATOMI DAN FISIS KAYU JATI DARI MUNA DAN KENDARI SELATAN Rulliaty, Sri; Lempang, Mody
Jurnal Penelitian Hasil Hutan Vol 22, No 4 (2004): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2318.103 KB) | DOI: 10.20886/jphh.2004.22.4.231-317

Abstract

 It is traditionally acknowledged that teak wood (Tectona grandis L.f) originated from Muna district had a better quality than that of South-Kendari. The objective of this study was to evaluate the different characteristics of both teaks. Wood samples were collected from bottom,  central and top part of trees from  age class 11 and Ill  (18 and 28 years) extracted from each region.  Samples were then examined for their anatomical and physical characteristics to determine the quality.Results revealed that teak wood samplesfrom Muna had higher dimensions in fiber  diameter,fiber  lumen width and vessel diameter than those of South-Kendari samples.  Such characteristics might bring the samples from Muna to have a higher specific gravity than the South-Kendari samples. It was also clearly shown that the older trees (age class III) possessed better characteristics than those of the young ones (age class II).
KETAHANAN LIMA JENIS KAYU TERHADAP BEBERAPA JAMUR PERUSAK KAYU suprapti, Sihati; djarwanto, djarwanto; hudiansyah, hudiansyah
Jurnal Penelitian Hasil Hutan Vol 22, No 4 (2004): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2877.869 KB) | DOI: 10.20886/jphh.2004.22.4.239-246

Abstract

The resistance of five wood species originated frim west java were evaluated using DIN52176-modified standard.wood sample were divided into two groups radially,namely outer andInner parts of log.results showed that bengkal wood(nauclea orientalis L.). mindi (melia dubiacav.)and biantaro(cerbera sp.) were moderately resistant against several fungal attack (class III).whereas .jaran (lannea coromandclica merr.) and waru (hibiscus tiliaceus L.)were not resistant (class IV). Weigtht loss percentage of the inner part of log was lower than that of the auter part.the highest weight los was encountered on the inner part of jaran exposed tocorioulus versicolor culture (52.26%).while the lowest was found on the inner part of waru exposed to pycnoporus sanguincus HHB-8149 (0.53%) the most severe attacks were perfomed by corilus versicolor.followed by pycnoporus sanguineus HHB-324,tyroyces palustri,and polyporus sp.
TEKNIK PEMBUATAN PERNIS DARI DAMAR UNTUK USAHA KECIL Edriana, E; Dahlian, Erik; Sumadiwangsa, E Suwardi
Jurnal Penelitian Hasil Hutan Vol 22, No 4 (2004): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2004.22.4.205-213

Abstract

This study  was intended to identify an appropriate formula  ill  manufacturing varnish for  a small-scale industry.  Resin used in the formula consisted of two types,  namely "The ash" and "the low grade".  Other ingredients were technical - grade toluene, mixed with other agents (synthetic alkyd, kerosene, dry cobalt, and dry calcium) at several compositions.  Results revealed  that ash resin could be used for  producing good quality varnish suitable for  small scale industry using certain formula. Resin was dissolved in  toluene at 65% and added with 25% synthetic alkyd. 8.8% kerosene, 0.3% dry cobalt, and 0.9% dry calcium.  The varnish took 3 hours to dry, with glossy appearances and convenient contact senses.  Varnish made from  low-quality resin exhibited transparent appearances, but thickened after 24 hours exposure as affected by air contamination. The resulting varnish had a lowerproduction costs than those of the commercial ones. 
ANATOMI PEPAGAN PULAI DAN BEBERAPA JENIS SEKERABAT Mandang, Y I
Jurnal Penelitian Hasil Hutan Vol 22, No 4 (2004): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2004.22.4.247-261

Abstract

Bark anatomy of white pulai (Alstonia scholaris R.Br.).  black pulai (Alstonia angustiloba Miq.) and bintaro (Cerbera manghas L.)  were observed and described for identification purposes.  These plants  have been used as sources of traditional medicine in South East Asia.  Bark of these trees exudes white gum when it was cut; the inner parts are white.  The outer surfaces of A. scholaris and C. manghas are gray and usually lenticellate; the outer surface of A.  angustiloba contains no lenticel, and the colour is dark brown .  with narrow and shallow longitudinal fissures.  The main components of bark are phloem, parenchyma, ray, fibre, sclereid and periderm. Fibres are tangentially arranged near the cambium ofjuvenile stem of all species, then pushed outward by cambium activity as the age of the plant  increased.  Sclereids were few  and thin walled while the plants  were young and then increased in quantity and in cell wall thickness as the plants become mature.  The main anatomical differences between bark of these plants were in the morphology of the sclereids.  Sclereids of A. scholaris are short and  chubby, sclereid of A.   angustiloba are long and stout  while those of C. manghas are long and slender. A tentative identification key is presented. 
KETAHANAN TIGA JENIS KAYU UNTUK BANTALAN REL KERETA API TERHADAP JAMUR PERUSAK KAYU SECARA LABORATORIS Djarwanto, Djarwanto; Suprapti, Sihati
Jurnal Penelitian Hasil Hutan Vol 22, No 4 (2004): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2004.22.4.215-221

Abstract

Wood still performs as the main materials for  railway sleepers, especially at their connected portions,  cross and bridge.  So far, wood has not yet been effectively substituded by other materials. However,  wood based railway sleepers are susceptible to deterioration by the decaying fungi.  This study examined,  the decay resistance of three wood species i.e.  bangkirai (Shorea laevis),  meranti batu  (Shorea  platyclados)  and rasamala  (Altingia exelsa).  Samples  were  evaluated  against  the decayingfungi  in a laboratory experiment using DIN 52176-modified standard.Results  indicated that bangkirai and meranti batu were classified  resistance against fungalattacks (Class II), whereas, rasamala was categorized moderately resistant (Class III).  The weight loss percentage  of rasamala was higher than those of bangkirai and meranti batu.   The ability of fungus  to degrade certain wood was depended upon kinds of wood and fungus  itself. Fungi with significant decay ability were Pycnoporus sanguineus HHB-324, Schizophyllum commune, Polyporus sp.,  Trametes sp. and Tyromyces palustris.The highest  weight losses were recorded on  samples exposed  consecutively  to Pycnoporussanguineus and Schizophyllum commune. 

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