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Search results for , issue "Vol 4, No 4 (1987): Jurnal Penelitian Hasil Hutan" : 12 Documents clear
PENELAAHAN SIFAT PRIORITAS PEMANFAATAN JENIS TANAMAN UNTUK KAYU BAKAR Effendi, Rachman; Basuki, Suwidji; Roliadi, Han
Jurnal Penelitian Hasil Hutan Vol 4, No 4 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4741.127 KB) | DOI: 10.20886/jphh.1987.4.4.35-40

Abstract

There is a need to classify fire  wood for flue/  based on energy content.   This research is conducted  to categorized fire wood species using discriminant  analysis.Data of which collected from  each of  research areas are plant  varieties for  fire  wood,  age classification,  annual  volume  increase,   specific gravity,  calor value and volume  of  extractive  elements.Variety of  woods used for fire  wood are Akasia  (Acacia   auriculiformis),   Akasia  (Acacia decurrens),  Kaliandra  (Calliandra  callothyrsus), Gamal  (Gliricidia  maculata),  Kemlandingan   (Leucaena  glauca),  Turi  (Sesbania   grandiflora)   and  Jati  (Tectona  grandis). For  the purpose   of analysis of the type of relationship  between  annual volume  increase (X1), specific  gravity  (X2),  calor value (X3),  volume  of extractive  elements (X4) and the adaptation order of plant  varieties for fire  wood is clasified by the discriminant function.The function is also used for  determining adaptation  order of utilization  of plant  varieties for fire  wood.Based on the discriminant  analysis it can be expressed  as:Yj = 0.2148X1j + 9.7184X2j + 0.7231 X3j - 6.7121 X4j..................................................................(1).                                               The result of average substitutions of annual volume increase, as specific gravity,  ca/or value increase and volume of extractive elements  decreased as described by the equation  (I).  It can be said that (the adaptation  order of plant  varieties for  fire  wood) produced  from   the most  to the least based on its number of heat of combustion  at the plantation  age 2, 3 and 4 years are Akasia   (Acacia decurrens), Akasia  (Acacia auriculiformis), Kaliandra  (Calliandra callethyrsus),   Gamal  (Gliricidia  maculata),  Kemlandingan  (Leucaena   glauca),  Turi  (Sesbania  grandiflora)   and  Jati (Tectona  grandis).
PENGARUH TIPE TANAH TERHADAP KOMUNITAS RAYAP TANAH Sumarni, Ginuk; lsmanto, Agus
Jurnal Penelitian Hasil Hutan Vol 4, No 4 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3457.953 KB) | DOI: 10.20886/jphh.1987.4.4.22-25

Abstract

Beside temperature  and humidity,  soil type is an important factor  that effects  termite population  size.  From  three types of soil selected for the study  (association  of dark grey alluvial and greyish  brown,  grey regosol and association  of  low peat  glei and grey alluvial),  three  termite species, namely Microtermes insperatus Kemner, M. incertoides Holmgren and Macrotermes  gilvus (Hagen) were observed.  These three species of termite inhabited  the low peat  glei and grey alluvial soil.  In  the association  of  dark  grey alluvial  and greyish  brown  soil, only  M.  gilvus  was observed.  This same species of  termite  was also spotted  the grey regosol soil.The number of termite individuals found in the three  types  of soil  were obviously  different. The greatest  number  were observed  in the association  of low peat  glei and grey alluvial soil.
WOOD GASIFICATION IN A FLUIDIZED BED Maniatis, K; Rosid, M; Widnyana, I M
Jurnal Penelitian Hasil Hutan Vol 4, No 4 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6560.478 KB) | DOI: 10.20886/jphh.1987.4.4.41-47

Abstract

Kayu  Eucalyptus  deglupta  di konversi  da/am perangkat  gasifikasi fluidized bed dengan faktor udara 0,2-0,4. Tujuan penelitian  ini ialah untuk membuat data dasar mengenai : komposisi,  suhu,  hasil, perolehan  kembali  energi dan nilai kalor gas yang dihasilkan  dari gasifikasi  kayu tersebut pada  kondisi  yang  terkendali  dengan  baik,  sehingga  dapat dijadikan  dasar penilaian  bagi jenis  kayu  lainnya.Komponen utama gas yang dihasilkan terdiri dari: hidrogen, karbondioksida,   karbonmonoksida,   metana  dan nitrogen;  sementara  etena dalam jumlah  kecil. Nilai kalor gas bervariasi dari 2,8 hingga 5,4 MJ/Nm3 pada suhu antara 723 sampai  1021°C.  Hasil gas naik dari 1,5 hingga 3,9 kg gas/kg  bahan  baku  (bebas air dan abu) sementara faktor  udara naik  dari 0,22 hingga 0,57. 
PENGAWETAN SEBELAS JENIS KAYU DENGAN METODE RENDAMAN PANAS-DINGIN Barly, Barly; Permadi, Pipin
Jurnal Penelitian Hasil Hutan Vol 4, No 4 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3760.079 KB) | DOI: 10.20886/jphh.1987.4.4.8-14

Abstract

A study on the treatability of eleven wood species was carried out using hot and cold soaking  treatment  methods  with Koppers Formula  7 as preservative. Specimens measuring 50 cm x 5 cm x 5 cm were soaked  in five  and ten percent preservative  solution for  a duration  of one, two, and three hours and then allowed to cool while the timber is still soaked in the liquid.  The penetration  and retention  were recorded. From this study  the following   conclusions  could  be drawn:The treatment schedule and concentration  of solution  have a highly significant  effect  on the preservative  penetration  and retention. Much higher retention  was shown  when longer hot soaking  and higher concentration  were employed.
PEMANFAATAN SERBUK GERGAJI JEUNGJING SEBAGAI KOMPOS UNTUK PUPUK TANAMAN Pasaribu, Ridwan Achmad
Jurnal Penelitian Hasil Hutan Vol 4, No 4 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5960.251 KB) | DOI: 10.20886/jphh.1987.4.4.15-21

Abstract

The result of composting  experiment for the manufacture  of compost  as fertilizer  is reported in this paper. The compost was prepared from jeungjing  (Albizia  falcataria   L. Fosberg)  sawdust  and  rice straw  using  the  indoors  process.  Jeungjing  sawdust  mixed  with  rice straw  were composted  for  10 days, 20 days, 35 days and 55 days. The results are as follows:Except for C/N ratio, the compost produced from different  compositions  of jeungjing  sawdust and rice straw, contained  organic carbon,  total nitrogen  and volume  reduction  of compost  which were not significantly  different. Organic carbon, total nitrogen, C/N-ratio and volume reduction of compost were significantly  affected  by composting time. A combination of 60 percent jeungjing sawdust and 40 percent rice straw composted for about 35 days, produces  compost  with a relatively low C/N ratio (about 45.87) and volume  reduction  of  15.47%  The  C/N  ratio  content   was not  as good  as that  of  soils  which  is about  20 (Thompson, 1957). 
WHITE-ROT FUNGAL PRETREATMENT OF FORESTRY WASTES FOR SOLID STATE METHANE FERMENTATION Gusmailina, Gusmailina; Komarayati, Sri; Wilde, B De; Vanhille, S
Jurnal Penelitian Hasil Hutan Vol 4, No 4 (1987): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (8841.812 KB) | DOI: 10.20886/jphh.1987.4.4.53-61

Abstract

Penelitian  ini bertujuan  untuk  melihat  sejauh  mana pengaruh  pemberian  jamur  perusak  kayu  (white-rot fungus)  terhadap perombakan ligno-selulosa yang terdapat pada limbah kehutanan  untuk  digunakan  sebagai substrat pada fermentasi metan secara padat.  Limbah  kehutanan yang digunakan adalah serbuk gergaji kayu karet (Hevea brasiliensis) dan pinus (Pinus  merkusii) serta daun kayu putih (Melaleuca  leucodendron) sisa penyulingan. Jamur yang digunakan  adalah Schizophyllum  commune Fr. dengan lama waktu  inokulasi sampai 5 minggu dan kemudian  baru difermentasi.Karet merupakan  substrat yang miskin  untuk  dapat menghasilkan  metan.  Produksi  gas tidak  meningkat  secara nyata.  Pinus sangat sukar dirombak,  sedangkan pada limbah daun kayu putih  terdapat inhibitor yang menjadi penghalang sewaktu proses berlangsung,  namun  inhibitor  ini agak menjadi  lunak  untuk  difermentasi  setelah diberi pra-perlakuan  terlebih  dahulu  dengan jamur  perusak  kayu.Pada masing-masing  substrat  terdapat  hubungan  spesiflk  antara berat kering yang  hilang selama  berlangsungnya  aktifltas  jamur  dengan perubahan  produksi  metan.   Perubahan  efisiensi  metan  berkisar  antara  10%-25%.  Praktisnva  penerapan   untuk   "biogas  generasi"   masih diperlukan  penelitian  lebih lanjut  untuk  memperoleh  produksi  secara maksimal.   Namun  demikian  untuk  limbah ligno-selulosa lainnya seperti jerami pra-perlakuan  ini sangat baik  untuk  dikembangkan.
PENGAWETAN DUA JENIS KAYU MERANTI DENGAN METODE RENDAMAN Barly, Barly; Permadi, Pipin
Jurnal Penelitian Hasil Hutan Vol 4, No 4 (1987): 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.1987.4.4.4-7

Abstract

This paper deals with an experiment  of soaking  treatment  of two meranti  wood species each with  Wolmanit CB and Koppers Formula 7. In this process three groups of  wood samples  measure 50 cm x 5 cm x 5 cm were submerged  in a bath of preservative for  three, five  and seven days. The treatability  of  the samples  were studied.  From  this study  the following   conclusions  could  be drawn:Penetration of both preservatives could be increased into red meranti when high concentration   were employed.Retention  of Koppers  Formula  7 increases on both  meranti  when high concentration   was employed.In general the such  treatment  can not be recomended  due to the result obtained  is lower  than  the treatment  spesification requirements  for housing  wood preservation. 
PENGARUH TEKNIK PENYADAPAN TERHADAP PRODUKSI GETAH AGATHIS DI BALI Sumantri, Ishak Sumantri; Dulsalam, Dulsalam; Machfudh, Machfudh
Jurnal Penelitian Hasil Hutan Vol 4, No 4 (1987): 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.1987.4.4.63-66

Abstract

There are many kinds  of Agathis sp.  having specific bark thickness  in Indonesia. For example, at Buleleng Forest District Bali, where the investigation  was carried out,  there are two groups of Agathis sp. The first  group is Agathis  sp. known  to have bark thickness greater than one cm, and the other group belongs to thin bark ( < 1cm). The bark thickness  of Agathis   sp. has a bearing on the resin yield. The resin itself  is always coagulated  quickly, there by requiring special treatment  to produce  optimal  resin yield. This investigation  is intended  to select the Agathis sp. producing optimum  resin yield  and to increase the resin output by applying  new tapping  technique. This study  reveals that:The resin yield of Agathis sp. in Bali was quite low. It ranges from 0.1 gram to 24.6  gram/tree/week  with approximately   3.8  gram/tree/week average.Agathis sp. with  thick bark give higher resin yield than those of thin bark.  The average resin yield of thick bark Agathis sp, was 6.3  gram/tree/week,  while it is only 1.3  gram/tree/week   for thin bark.The  V-shape tapping  method  give resin yield  approximately  80% higher than the reverse  V-shape.The application  of H2SO4 10% as stimulant did not give significant effect on the resin production. Based on the  average resin yield  data, however, the resin yield  was actually  increased approximately  26%   when the H2S04 were added compare  to  the control. 
PERTUMBUHAN JAMUR KUPING (AURICULARIA POLYTRICA) PADA DELAPAN JENIS KAYU Suprapti, Sihati; Sumarni, Ginuk
Jurnal Penelitian Hasil Hutan Vol 4, No 4 (1987): 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.1987.4.4.67-69

Abstract

Ear mushroom (Auricularia  polytrica)  was cultivated on logs of eight wood species i.e.  hamerang (Ficus grossularoides  Burn. f.), jeungjing (Albizia falcataria  (L.)  Fosb.), kihuut (Vernonia arborea  Ham.),  kipiit  (Maesa ramentacea  Wall.), manii (Maesopsis eminii Engl.),  sehang (Ficus padana Burn. f.), seuseureuhan  (Piper aduncum  L.)  and teureup (Artocarpus  elastica Reinw. ). The logs were kept slanted on an angle of  ± 60° with bamboo  supports  in shady site under trees at Gunung  Bunder,  Bogor.The mature mushroom  was harvested  every day after  the growth  of  the fruiting body.   The logs start producing fungus two months after inoculation. The highest harvested  was obtained  at fourth   month  of observation.  The higher total yield of ear mushroom  during  the six months observation  was obtained from  seuseureuhan  log (59.537 kg), sehang (28.08 kg), manii (16.056 kg) and hamerang log (14.838 kg) per m3 of log. The lower total yield  was obtained from  kipiit  log (11.2 kg), kihuut  (9.813 kg), jeungjing  (4.526 kg) and teureup (2.441 kg) per  m3 of log. 
POLA PENYEBARAN SERANGAN RINTISAN KUMBANG AMBROSIA PLATYPUS TREPANATUS PADA DOLOK KAYU RAMIN Sukartana, Paimin; Martawijaya, A
Jurnal Penelitian Hasil Hutan Vol 4, No 4 (1987): 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.1987.4.4.1-3

Abstract

The distribution  pattern  of  the initial attack  of  ambrosia  beetles Platypus trepanatus   Chap. (Coleoptera:  Platypodidae) on  ramin  logs (Gonystylus  bancanus  Kurz.s ) was studied.  Six fresh  cut  test  logs,  each of  about  25 cm  in diameter  and 50 cm  in  length,  were barked  and horizontally  kept in a row of 20 cm apart at about 75 cm above the ground on a pair of sleepers. The surface of each log was longitudinally  divided into eight equal parts,  i.e. two single ones of the top and bottom face and three paired others situated of the upper sides, sides, and lower sides.The result showed that the attacks were not equally scattered over the whole face  of the logs. The most violent attack  was found  on both the upper side parts.  The number of  tunnels  on these parts  were significantly  different   than  those  on the others.  The lighter infested parts  were respectively recorded on the side, top, lower sides, and  bottom face of the logs. More than 90%  of the initial infestations  were concentrated on the upper side and side parts,  covering 50%   of the surface area of a log.

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