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Search results for , issue "Vol 6, No 1 (1989): Jurnal Penelitian Hasil Hutan" : 11 Documents clear
ASPEK SOSIAL EKONOMI TANAMAN AREN Antaatmadja, Subandi
Jurnal Penelitian Hasil Hutan Vol 6, No 1 (1989): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6258.074 KB) | DOI: 10.20886/jphh.1989.6.1.63 - 69

Abstract

Aren  tree is one  of  the  members   of palm  family.   The  distribution   extends   in all Indonesian  area.  The main produc- tion  of  aren juice   for  material  of  sugar,  are aren fruits  for  food,  fiber  mode  for plait  material  handcraft,   and  numeroua  utilization.  The study   of  aren  trees in Cianjur  Concludes  :1.The  aren  trees  are found   in all districts.                                                                      2.The  study   in a sub  district  of  Cianjur  reveals  that  :a.Cibinong  is one  of  the  biggest  sub  district   where  aren  stands  were  found.b.Total production  of  brown  sugar in  1986  in this  sub  district  was  549  tons  with  831   farmers.   Average  sugar pro-  duction   ammounts    to  0.661    ton/farmer.c.Average  input   in  aren  busines  is  2.12   hours/day/house   hold.d.The  small  holder  of  the  aren starch  production  having  capacity   of  72  tons/year   requires  total  investment  of  Rp  1,505,000.-    and production   cost:   Rp  11,140,000.-/year    giving  the  financial  earning  of Rp  7,500,000.-
RESPONS KUMBANG AMBROSIA TERHADAP PERLAKUAN DENG AN PESTISIDA Sukartana, Paimin; Martawijaya, Abdurahim; Martono, Dominicus
Jurnal Penelitian Hasil Hutan Vol 6, No 1 (1989): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4643.271 KB) | DOI: 10.20886/jphh.1989.6.1.12-17

Abstract

A  case study   on  the  behavioral  responses  of  ambrosia  beetles  to some  pesticidal  formulations   was carried out  at  a logging area in West Kalimantan  in 1981.    Each  pesticide  formulation   was sprayed  to debarked  logs of fresh1%  felled  ramin trees  (Gonystylus bancanus Kurz.}.   The  tested   logs  were,  then,  allowed  for  the  beetle  infestations for  four  weeks,   and inspections  were conducted   weekly  to count  the beetle  tunnels. A  lower  intensity   of  the  beetle   infestation   on  the  treated  logs  than  those  on  the  controls   was  considered  as an inhibitory   response.  in contrast,   a  higher  intensity   of  the  infestation   on  the  treated  logs  was  indicatively   caused  by  a stimulatory    response. These following  conclusions  are drawn  from  this  study:                            1. A  highly  inhibitory   response  on  the  ambrosia  beetle  attacks  was shown  by  treatments   with  pesticide   containing  50% cypermethrin   or  50%  fenithrotion.2. Ramin   logs  treated  with  pesticide   containing   either  30%   TCMTB  or  a  mixture   of  90%  thiourea  + 10%  quarternary ammonium  +  0.1 % diazenium   dioxy   seemed   to  be  highly  stimulating   to  the  beetles.   The  stimulating   effect   of  the second  formulation   initially  decreased  and  lost afterwards  if  the diazenium   dioxy   component  was increased by 0.1   to 0.2%.   A  doubtful    record  was shown   if  the  TCMTB  was mixed   with  2%   borax.3. The pesticide  containing  5%  Cu-8-oxyquinolinolate   and 80% dichlofluanid   were also unaffected to the beetle  responses
ANATOMI DAN IDENTIFIKASI SEMBILAN BELAS JENIS KAYU DARI SULAWESI Mandang, Y I; Sumarliaai, Nenny
Jurnal Penelitian Hasil Hutan Vol 6, No 1 (1989): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (11668.308 KB) | DOI: 10.20886/jphh.1989.6.1.21 - 35

Abstract

Gross  and  anatomical   features   of  nineteen   wood  species  from   Sulawesi  belonging  to 15 genera and  11 family were observed,   described  and  then compared  for identification.   A dichotomous key  for identification   were also consructed.Upright  cells with  pointed   end  were discovered  in  the xylary   ray  tissue of Koordersiodendron pinnatum Merr.  This feature   were  never observed   in  any  other   wood  species.The  occurence of crystals  in parenchyma of Palaquium  proved  not  to be constant,  so it should  be used for identification of  the genus in positive  sense only.
MEMPELAJARI SIFAT FISIKO-KIMIA DEKSTRIN SAGU BUATAN DAN KOMERSIAL Wiyono, Bambang; Silitonga, Toga
Jurnal Penelitian Hasil Hutan Vol 6, No 1 (1989): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3078.328 KB) | DOI: 10.20886/jphh.1989.6.1.18 - 20.

Abstract

Sago starch contains about 84. 7%  carbohydrate. Further analysis of the carbohydrate indicate that about 73% consist of amylopectin (the branched polymers) and 27%  amylase  (the linear polymers). These components are potentially contributing to the production of sago-dextrin. The purpose of this research is to analyse the physico-chemical properties of the laboratory made sago-dextrin and the properties of the commercial one, to compare with the Indonesian Industrial Standard requirements for dextrin. The results indicated that the ash content and acidity, of both the experimental and the commercial sago dextrins have met the Indonesian Industrial Standard. The solubility in cold water, dextrose content of the commercial dextrin, and the moisture content of the experimental one have not met the Indonesian Industrial Standard. Higher yield can be obtained by using acid concentration below  0.05 M as catalyst and or hydrolyzing time under 5 minutes during the dextrin making process.
PENGARUH UMUR DAN POSIS! DALAM POHON TERHADAP BEBERAPA SIFAT FISIS KAYU Karnasudirdja, Suparman; Sarwono, Edi
Jurnal Penelitian Hasil Hutan Vol 6, No 1 (1989): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6387.04 KB) | DOI: 10.20886/jphh.1989.6.1.40- 47

Abstract

Pinus  merkusii   or locally   known  as Tusam,   is one of the plantation  species  extensively   cultiuated  in the uarious part of  Indonesia.    The  uses  of  its  wood  uary  from  chopstick   and  ice cream  spoon  to some  construction   item  such  as trans- mission pole,  and a possible  use of  its wood  for cooling  tower is still being studied.The paper  describes  study   result  of  the  effect  of  tree  age  and  position   within   tree  on  some  physical  properties   (Specific grauity,   moisture  content,   uolumetric  shrinkage   and fiber saturation  point).   The  results  were computed  using  the nested  or hierarchical  classification  analysis,  and  the differences   between  means  tested  using  Tukeys  w procedure.The  results  shows  that  the tree  age effect  significantly   the green and air-dry  specific gravity,   The other properties do not  seem  to  be affected. Between  tree differences   affect  significantly    the air-dry  moisture  content  only.  Height  within  tree does  affect  uery  significantly   the  uolumetric   shrinkage  from  green  to ouen dry  condition;  and from  air-dry  to ouen  dry condition.   The ouerall  mean and standard deviation  ualues for each  property   had been calculated  and  the  result  presented.
PENGARUH KOMUNITAS DAN KEPADATAN RAYAP TANAH TERHADAP KERUSAKAN RUMAH Sumarni, Ginuk; Ismanto, Agus
Jurnal Penelitian Hasil Hutan Vol 6, No 1 (1989): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4522.855 KB) | DOI: 10.20886/jphh.1989.6.1.57 - 62

Abstract

The  study    was carried   out  at  Cibadak,   Padalarang and Pacet   which  have soil  types  of  Renzina,    litosol  and  brown forest   soil  complex;    Brown   mediteran   complex   and  Brown   Andosol   and  brown  regosol  association,    respectively.    It  is  found   that  the  first  soil  type  has  the  highest   subterranean    termites   density   as  well  as house  damages.Subterranean     termites   species  found   at  the   whole   locations    are  Macrotermes gilvus  (Hagen)    and  Microtermes  insperatus   Kemner.
POLA DISTRIBUSI KAYU PENGHARA UNTUK INDUSTRI PENGGERGAJIAN DI DAERAH JAWA TIMUR Antaatmadja, Subandi; Effendi, Rachman
Jurnal Penelitian Hasil Hutan Vol 6, No 1 (1989): 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.1989.6.1.48 - 56

Abstract

Logs  as raw  material  of  sawmilling  industry   in East Java are provided   by  Forest  District  Administration    of  Perum Perhutani.   Every   year  Perum   Perhutani   makes   a  plan   to  distribute    the  raw  material  for  sawmilling   industry.   Perum  Perhutani,    in  particular   Unit   Two   East  Java,    has  been  striving  for  improving   the  raw  material  supplies   throught   the improvement    of  quality  of  teak  logs continuity    of  supply.In determining  the distribution   pattem   of  raw materials from  forest  districts  to individual  sawmill  transportation   cost  should   be  one  of  deciding  factors.The  aim  of  this  investegation   is  to  find   the  distribution   pattern  of  transporting   the  logs from  forest  districts   to  individual  sawmill so as to minimize   the  total  transportation   cost.  The results  of  the investigation  are :1.Jatirogo sawmill  is the largest supplier  of logs while Gresik is the smallest. 2.The minimum   total cost  of  transporting  the raw material  is Rp 229.314.150,-.
MODEL REGRESI SEBAGAI PENDUGA PENGARUH FAKTOR-FAKTOR PRODUKSI TERHADAP PENDAPATAN PETANI TUMPANGSARI STUDI KASUS KESATUAN PEMANGKUANHUTAN BOJONEGORO Abdurachman, Akub J
Jurnal Penelitian Hasil Hutan Vol 6, No 1 (1989): 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.1989.6.1.70- 79

Abstract

The  success  of  taungya  depends   on several  factors,   i.e.  site  quality,  social and economic   condition   of peasants.  This report  was made  as the  result  of  taungya  survey  in Bojonegoro   Forest  District,  East  Java. The influence  of several factors were  estimated    by  the  multiple   regression  equation.The  effect  of  site  quality   variable  is  significant,   and  the  effects  of  technology   and family  man power  variables are highly  significant,   but  the  levels  of  education,    labor  cost,  and peasant  location  do  not  significantly   influence  peasants' income   from   taungya.  The growth   of  basal trees area is influenced   by technology   and production   facility  cost  variables in highly  significant level.  This  occurence  showed   that  applying    "Inmas"  policy  on taungya  could  increased peasants  income,  and give positive effect   on  basal trees growth.   As  the site  quality  played  highly  significant   role on taungya  success,  it is necessary  to applydifferent   policy   to  each  location   with  different   site  quality.
MODEL PENDUGAAN KONSUMSI KAYU LAPIS OLEH RUMAH TANGGA DI DAERAH JAWA TENGAH DAN JAWA TIMUR Effendi, Rachman; Buhannan, Buhannan
Jurnal Penelitian Hasil Hutan Vol 6, No 1 (1989): 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.1989.6.1.1 - 5

Abstract

The  development  of  domestic   market  of  plywood  relies  heavily  on  the effective   demand  for plywood  or buying  power   in  real sense.                                                                                                               This  research is aimed  at studying   the pattern   of  relation  ship  between   the  consumption  of plywod  by household in Central  Java  and  East  Java  and  some  factors  influencing  it.The  average volume  of plywood  annually  consumed   by household   is of 0.0152  m3 per year per  family   (with  average of  3. 6 persons/family).   The  variables  that  influence  the effective  demand  of plywood are family  income,  price  of plywood and  the  number   of  family   member.    The  elasticity   of  the  demand   of  the  three  factors  is  of  0.3365  implying   that  the consumption of plywood  is inelastic  to the change of  the three factors.
STUDI KASUS PRODUKTIVITAS DAN BIAYA ANGKUTAN DENGAN TRUK ISUZU DI DUA HAK PENGUSAHAAN HUTAN DI SUMATRA BARAT Dulsalam, Dulsalam; Sukanda, Sukanda
Jurnal Penelitian Hasil Hutan Vol 6, No 1 (1989): 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.1989.6.1.6 -11.

Abstract

A  study   on  productivity  and  operating   cost  of  Isuzu   TWD  20  (1979 model)   trucks  has been  carried .,out at  two forest   companies   in  West  Sumatra.   The  result  shows   that  :                                                                                                                                                                    1. The average hauling productivity  at PT  Ragusa  Ltd  and PT Pasar Besar is 113  m3  km/hour   and  211  m   km/hour,respectively.2. The  average operating cost  at PT  Ragusa Ltd  and Pasar  Besar is respectiuely  Rp.  93,-/m3    km  and Rp.  57,   /m3    km.

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