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Jurnal Penelitian Hasil Hutan
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Search results for , issue " Vol 5, No 7 (1988): Jurnal Penelitian Hasil Hutan" : 5 Documents clear
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 | 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.

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