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Articles 13 Documents
Search results for , issue "Vol 5, No 7 (1988): Jurnal Penelitian Hasil Hutan" : 13 Documents clear
PENGARUH FAKTOR PRODUKSI TERHADAP PENDAPATAN PEMETIK DAUN KAYU PUTIH Prahasto, Hendro
Jurnal Penelitian Hasil Hutan Vol 5, No 7 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2378.296 KB) | DOI: 10.20886/jphh.1988.5.7.389-393

Abstract

Leaf  cutting  activity  gave contribution to  the  total  income  of  cajuput  leaf cutters  with  an average of  Rp.162,000 per year  or approximately  41%  of  the  total  income.   The result  of  linear regression  analysis shows  that  the  income  from cajuput leaf  cutting  gave a significant   income  contribution  to the  leaf  cutters  total  income.Based  on the  result  of  Cobb-Douglas analysis, it is shown that  four  production  variables  i.e. share  area  (Xl), work time  spent outside   the  leaf  cutting activity  (X2), work time spent   for  leaf  cutting activity (X3), and  capital  or farming   production  cost (X4) gave a  significant   impact   on  the  total  income   of  leaf  cutters.   The  production  function: equation isIn Y = 3.5385+0.1189 In XI + 0.0283 In X2 + 0.2976 In X3 + 0.1255 In X4 + E with  determination coefficient   (R2)  of  0.7549.
PENGARUH PENYARADAN KAYU DENGAN TRAKTOR RANTAI KELABANG TERHADAP KERUSAKAN TEGAKAN TINGGAL Idris, Maman Mansyur; Fakuara, Yahya; Suratmo, Gunarwan; Suparto, Rahardjo S
Jurnal Penelitian Hasil Hutan Vol 5, No 7 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2934.038 KB) | DOI: 10.20886/jphh.1988.5.7.404-409

Abstract

The  study   of  the  effect  of  log skidding  on  the  damage  of  residual stand  was carried out in one  logging company in West Kalimantan   in  1986.   The  meaning  of  residual stand  in the  study  are trees with diameter  20 cm and up.  The result of the study   shows  that  the  average damage  of  residual stand  is 18% per  hectare,  not  included  the damage  caused  by felling i.e.  15%  per  hectare.  According   lo  Indonesian   Selective  Cutting  System,  the  residual stand  is good  enough  to  fulfill  the sustained  yield  condition, that  is keep  at  least 25  core  trees  to  be left  per hectare. The role of skidded   trees number and stand  density  was significant  effect   on  the  residual stand  damage.
LAJU SERANGAN PHOLADIDAE DAN TEREDINIDAE PADA BEBERAPA JENIS KAYU Muslich, Mohammad; Sumarni, Ginuk; Hadjib, Nurwati
Jurnal Penelitian Hasil Hutan Vol 5, No 7 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1702.899 KB) | DOI: 10.20886/jphh.1988.5.7.400-403

Abstract

The Mollusca  wood  borers,  normally  found  in Indonesian  sea waters, are divided  into  two  types,  i.e. Pholadidae  and Teredinidae.   Both  types  have different  characteristic  nature  of  infestation to  wood. This paper  deals with  a study on the borer  infestation   to  seven  tropical  commercial   wood  species.The  study   was  conducted at  Rambut Island  seashore  (on Java Sea)  using wood  samples  measuring  2.5 cm  by 5.0 cm by  80.0 cm.  The samples  were  randomly arranged at a raft  and  observed  after  8,  7 and  12 months.The  result  reveal  that  after 12  months most   of  the  samples  were  completely    attacked   by  the  Pholadidae  and Teredinidae.  However moderate  borer infestation was shown by  Eusideroxylon   zwageri, which  means that  this species  is relatively   resistant  to  marine  borers  infestation. Meanwhile,  the  infestation   rates  of  Pholadidae  and  Teredinidae   are significantly   different, and  they  have different characteristic
PENGARUH PENYARADAN KAYU DENGAN TRAKTOR RANTAI KELABANG TERHADAP PENGGESERAN DAN PEMADATAN TANAH HUTAN Idris, Maman Mansyur; Fakuara, Yahya; Suratmo, Gunarwan; Suparto, Rahardjo S
Jurnal Penelitian Hasil Hutan Vol 5, No 7 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3287.14 KB) | DOI: 10.20886/jphh.1988.5.7.394-399

Abstract

The study  of  the  effect of  log skidding  by crawler   tractors  on  forest soil displacement  and compaction wall carried out in one logging company in West Kalimantan in 1986.                                                                                                    The  results  of  the study  are as the following  :The  average  volume   of  soil  displacement was 0.06   cu.m/m  of  skid  road,  it  i6 equal  to  0.061 ton/sq.m. This level of soil displacement iis higher  than  the  soil loss tolerance of  0.0002   ton/sq.m.Soil  compaction as indicated  by the average soil bulk  density is  0.16 g/cu.cm.  At this level of compaction, the porosity is 56%  (far  higher  than  10%  minimum   porosity), which  means  that  the growth  of  vegetation   will be still  favourable.The role of  soil  water  content and  slope on forest soil displacement was positively   significant. The  role of skidding intensity on forest  soil  compaction   was positively   significant   and  the  role  of soil  water  content   and slope  on forest soil  compaction was negatively  significant.
HASIL TUMPANG SARI HUTAN TERHADAP PENDAPATAN PESANGGEM DAN BIDANG DASAR TANAMAN POKOK DI CEPU, BLORA Abdurachman, Akub J; Basuki, Suwidji
Jurnal Penelitian Hasil Hutan Vol 5, No 7 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2013.527 KB) | DOI: 10.20886/jphh.1988.5.7.430-433

Abstract

 The  scarcity  of  agriculture  land and  the  increasing population around  the  forest  have aucsed pressure on  the forest resource.   Taungya  system  approach   is aimed  at  improving   the prosperity   of  the people  surrounding   the  forest  through tree planting  coupled   with  crops in  two  years period.The result of observation on Taungya system in Pasar Sore Forest District  Administrations, Cepu,  Central Java, revealed  that  the  present  income  from taungya  system   contributed   about  22  % of  total  income.  Other  interesting   result showed   that  soil fertilization   by peasant,   beside gives positive   effect on peasant  income,   it also causes positive  impact  on the  growth   of  trees  basal areas.  Some   variables analyzed   in  this study  are  taungya  income   (Y1),  the  cost of  production facility  such  as fertilizer  and  insectiside  cost  (X1) man power   (X2), non-taungya income   (X3),  and  basal growth   (Y2). The  relationship   resulted  in regression  models  as follows  : Y1  =   -32,23 + 14,04X1  +   0,23X2  -  0,04X3  (R2 = 0,83) Y2  =   2.009,45 + 326,09  X1 + 2,98  X2  - 1,29  X3  (R2 = 0,78)
BUDIDAYA JAMUR PERUSAK KAYU V. BUDIDAYA PLEUROTUS FLABELLATUS PADA ENAM JENIS KAYU Suprapti, Sihati; Sumami, Ginuk
Jurnal Penelitian Hasil Hutan Vol 5, No 7 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1230.564 KB) | DOI: 10.20886/jphh.1988.5.7.410-412

Abstract

Pink oyster   mushroom (Pleurotus  flabellatus)  was  cultivated   on  logs of  six  wood  species,   i.e.  hamerang  (Ficus grossularoides Burn.f.),  jeungjing   (Albizia   falcataria   (L.)  Fosb.),  jirak  (Symplocos fasciculata Zoll.), kihuut   (Vernonia arborea  Ham.),   manii  (Maesopsis eminii  Engl.)  and seuseureuhan   (Piper aduncum L.).  The  logs were  kept  slanted  on an angle of  ± 60°  with  bamboo  supports   in a house  at Gunung Bunder  Forest  Complex, Bogor,  The mature  mushroom   were harvested  daily.The logs start producing  fungus  two  months  after inoculation. The average yield per log during one year observation was 581.8 g (hamerang,) 178.83g (manii),  69.23g (jeungjing), 25.47  g (kihuut), 19.44g  (jirak), and 18.47 g (seuseureuhan).The average yield  per month  per  m3 of log was obtained  from  hamerang  7.52 kg,  man ii 1. 72 kg, jeungjing  0.58 6 kg, seuseureuhan   0.44  kg.  jirak  0.321 kg and kihuut   0.244  kg.The total yield  in one year observation  was obtained  from  hamerang  (90.20 kg),  manii (20.67 kg), jeungjing  (7.03 kg),  seuseureuhan (5.3kg), jirak  (3.85kg)  and kihuut (2.93  kg) per  m3  of log.
ANALISIS KOMPONEN KIMIA MINYAK KAYU CENDANA DENGAN KROMATOGRAFI GAS Lukman, Abdul Hakim; Wiyono, Bambang
Jurnal Penelitian Hasil Hutan Vol 5, No 7 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4817.709 KB) | DOI: 10.20886/jphh.1988.5.7.437-441

Abstract

The purpose of  this research is to identify  chemical  components of sandalwood  oil by using the gas chromatography method. This sandalwood  oil  was  obtained   by  steam  and  water  distillation  for 18,  24,  and  30  hours  distilling  times. The  condition  of  the  gas chromatography   employed  was adjusted to :  injector  temperature  200°  C. detector temperature 0°  C,  initial  column   temperature  140°  C,  final  temperature  column  200°  C, speed  temperature   column   5° C/min,   with nitrogen  gas as carrier, and  the  using  the  flame  ionization   detector  system.    The identification  of  the peak  components was done  by  comparing  the  relative retention   time  of  the peak  component   with  the peak  retention   time  chemical  solution standard.   The peak  area of  each components    was calculated  by  normalization   method.The  results  indicated   that  chemical components of  sandalwood oil, which  was produced   by  the  steam  and  water distillation   for  18, 24,  and  30  hours,  include  0.0391, 0.0271, and  0.0313 % of α-pinene;  0.0065,  0.0034, and  0.0027 % of  limonene;  0.9147,  0.7799,   and  1.0393   % of α-santalene; 2.4375,1.9802, and 2.3474  % of  terpineol 4;  1.2184, 0.7922, and  0. 7921 % of  β-santalene;   5. 7263,  3.8800, and 3.9335  % of nerolidol; 48.0481, 51.1802. and 50.3507 % of β-santalol; 22.4367,  24.7127, and  24,2864 % of  (arnesol, Unidentified   component  in each distilling time were  19.1727,15.6443, and  17.2166   %. respectively.    The β -santalol  component    occupies  the  mayor  component   of  sandalwood   oil.  The  amount of  this component  at each  treating  condition was 48.0481 % for 18  hours;  51.1802 % for 24 hours; and 50.3507  % for 30 hours. Terpineol-4, nerolidol, β-santalol.   and  farnesol  components  constitute   the sandalwood   oil and is usually  calculated as the  total  santalol.
PENGARUH KERUSAKAN DAN KELERENGAN JALAN HUTAN TERHADAP PRODUKTIVITAS PENGANGKUTAN KAYU STUDI KASUS DI KALIMANTAN BARAT Sutopo, S; Suparto, Rahardjo S
Jurnal Penelitian Hasil Hutan Vol 5, No 7 (1988): 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.1988.5.7.420-424

Abstract

Timber transportation   productivity  decreases  when  forest  road  is  deteriorated   and  the  8lope  is large. This  study tried  to  investigate  the  effect  of  slope  and road  damage  on  timber  transportation  productivity,  and was carried out at the PT Sari Bumi  Kusuma  forest  company   areas in  West Kalimantan in  1987.The  investigation   results are as follows:Slope difference of  5% has significant   effect  on  transportation  productivity.  On  flat,   medium   and  steep  slopes, the productivities  are 265,   219 and  132  m3.  km/hr,   respectively.Transportation   productivity  is significantly influenced   by  a difference  of  15% damage  on  the  road. Productivities on  relatively   good  road, medium damaged  and  badly  damaged  roads  are  292,213  and  136 m3.km/hr, respectively.On flat  and  badly  damaged  roads  (at a damage  level greater  than  30%),   transportation  productivity  is reduced  64% which  caused  significant   financial  loss.  The  allowable  road damage  on  (at  terrain  without   causing financial  loss is 40%.On  medium   terrain  and  medium   damaged  roads  (at  damage  levels  between 15% and  30%), the  loss is significant. Medium damaged  (between 15%  and  30%) and heavy  damaged roads (greater than 30%) caused  transportation productivities  to  be decreased  as much as 25% and 58%,  respectively,   The allowable  road damage on medium   terrain without   causing financial  loss is 26%.On steep  terrain,   transportation   productivity is decreased  significantly i.e. 58% of  those on medium  damaged  roads (between   15% and  30%).  A  maximum   road damage  of  18%  is allowable  without  causing financial  loss.There  is  a significanf   interaction   between  slope  and road  damage.  The  steeper  the  slope  and  the  heavier  the  road damage,  the  larger  the  decrease in  transportation   productivity.In  the  transportation   distance of 60 km  and  the  timber  price  of  US$ 70/m3,  if timber  transportation  productivity decreases 30%,  it is strongly  suggested  to  repair damaged  road  immediatly   in order  to prevent   financial  losses.
BUDIDAYA JAMUR PERUSAK KAYU IV. KULTUR JAMUR PADA SUBSTRAT SERBUK GERGAJI YANG DIPERKAYA Suprapti, Sihati; Sumarni, Ginuk
Jurnal Penelitian Hasil Hutan Vol 5, No 7 (1988): 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.1988.5.7.385-388

Abstract

Oyster  mushroom (Pleuroius ostreatus) has been cultivated on five sawdust  media  of  five wood  species, i.e. durian (Durio  zibethinus Murr.),  jeungjing  (Albizia  falcataria  (L.)  Fosb.).  manii (Maesopsis eminii Engl.),  rubber  (Hevea brasiliensis Muell.  Arg.)  and  coconut   (Cocos  nucifera  L.). The  composition  of  the  media  was 100  % saw dust, 80 % sawdust + 20 % rice  bran,  99.5 % sawdust  +  0.5 % lime,  99 % sawdust + 0.5 % lime + 0.5 % trisuperphosphate    (TSP),  and 97.5 % sawdust + 0.5 % lime  +  0.5 %  TSP + 1.5 % gypsum.  Each  media was mixed  with sufficient distilled water. The  media  was allowed to cool after  autoclave  sterilization   before  being  inoculated   with  pure  culture  of  the  mushroom.   The  mature  mushroom was harvested  daily  after  the growth  of  fruiting  body.The highest  yield  was obtained  from Rubber wood  (129.8 g per 600  g media).  The  beat composition was obtained from  sawdust  80  % mixed  with  rice bran 20  % (103.17 g per  600  g media).The  higher  Biological  efficiency  during  the four  month observation were  obtained  from  media  containing  sawdu1t 80  % mixed  with  rice bran  20 %, i.e. rubber (66.73 %),   durian  148.15  %), coconut (28.12 %),  and  manii  (22.38 %).
PENDUGAAN KEPEKAAN KAYU KARET TERHADAP SERANGAN KUMBANG AMBROSIA Sukartana, Paimin
Jurnal Penelitian Hasil Hutan Vol 5, No 7 (1988): 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.1988.5.7.417-419

Abstract

 An  experiment   to  assess  the  susceptibility  of  rubber wood   (Hevea  brasiliensis)  to  ambrosia  beetle  infestations   was conducted   in a rural area,  near a rubber  plantation   in Jasinga,  Bogor. Fresh cut  rubber wood, each of  75 cm in length  1:1 and of  about  25  cm  in diameter, were prepared  for four  treating  conditions   including  freshly   cut, debarked,   and coated  with flint  kote,  and  (in a prepared  bore hole  made  on  the  middle  of  test  logs with  2.5 methanol   96%. The  extent  of the  beetle  infestations were  then  observed  and  recorded.The  test  results  revealed  that  the  degree of  rubber log susceptibility   to ambrosia  beetle  infestations   was affected   by the  treatments.  The  debarked   logs  were  highly   infested   by  the  beetles  in  less than  nine days  after  the  treatment   while the  un barked  ones  were still  soundly   left  in  the  field  for  more  than  one  month.   Significant   increase  in  log susceptibility due  to  the  treatments   with  ethanol   and  flint   kote  was also recorded  even  though  the  beetle  infestations   were not so high then  those  on  the  debarked  ones.

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