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Articles 6 Documents
Search results for , issue "Vol 9, No 3 (1991): Jurnal Penelitian Hasil Hutan" : 6 Documents clear
PROSPEK PASAR SAGU Astana, Satria; Dwiprabowo, Hariyatno; Puspitodjati, Triyono
Jurnal Penelitian Hasil Hutan Vol 9, No 3 (1991): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3419.215 KB) | DOI: 10.20886/jphh.1991.9.3.115- 121

Abstract

Based  on  the demand potential,sago starch has  a good prospect in both domestic and international domestic market, sago starch will be largely absorbed by the domestic High Frutose syroupe  (HFS) industry. A new plant of  total capacity as  much as 198.600 tonnes per annum is being considered by the indonesian Government. In interna­ tional market,  the demand potential  of sago  is promising. The developing countries alone will be facing the cereai, defisit of  67 million tonnes in  1990  and 105  million tonnes in 2000.  Sago starch is expected to contribute a sizeable quantityto overcome  these defisits.         
KERUSAKAN TEGAKAN DAN LIMBAH PEMANENAN HUTAN RAWA PADA KAWASAN SUATU PERUSAHAAN HUTAN DI KALIMANTAN BARAT Thaib, Jumalis
Jurnal Penelitian Hasil Hutan Vol 9, No 3 (1991): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6807.685 KB) | DOI: 10.20886/jphh.1991.9.3.97 -102

Abstract

An  investigation   was carried out  at  one swamp  forest  company   in  West Kalimantan.  Timber  stand  conditions  indi­ cated  by  the  diameter  of  tree  felled  all  of  wich  were  dominant    tree  species  and  the  density   of  all tree species  having diameter   of  20  cm  and  up are as follows:   the  diameter  ranging from  39, 7 to  62,2  cm  with  an average of  51,0  cm  while the  timber  density   ranging from  89  to  164  trees with  an average of  127 trees per  hectare.By  felling  one  tree  for  harvesting  purpose,   it caused  residual  stand  damages  between   0,35  and  1, 7.1  trees  with  an average of  1,04  trees.  This  large range was caused  not  only  by  the distribution   of  timber  stand  but also by  inappropriate felling directions. Logging  waste  that  consisted  of  stump,   clear bole,  branch  and  victimized   trees  with  the  diameter  o/ 10 cm and up were  0,10  m3  (2  %),  0,80  m3  (19  %), 0,16  m3  (4 %) and  0,49  m3  (12%), respectively.   These  wastes Cx n be utilized in the  future   because  the output  of processing  industry  is sawn  timber  only  and  the location  of  log resources area is closed to the saw mill site.
Karakteristik sifat fisika kimia dan toksisitas limbah fermentasi bahan Organik padat Sudradjat, R
Jurnal Penelitian Hasil Hutan Vol 9, No 3 (1991): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (8923.279 KB) | DOI: 10.20886/jphh.1991.9.3.122­-128

Abstract

Penelitian ini bertujuan  untuk mengetahui  sifat fisika kimia dan toksisiti timbah fermentasi bahan organic padat hasil fermentasi anaerobik sampah kota. dalam penelitian ini , sampah kota difermentasi secara anaerobic dengan proses dranco (Dry anaerobic conversion). sebelum dilakukan analisis sifat fisika dan kimia limbah padatnya dipisah-pisah ke dalam fraksi-fraksi untuk diketahui sifat fisika kimia dari fraksi-fraksi tersebut.cara pemisahannya adalah dengan pengembangan, pengertian dan penyaringan untuk penghasikan fraksi sebagai berikut : dranco waste (DW), dranco wastedried (DWD), dranco liquor (DL), fresh humotex (H), fine humotex (FnH) dan coarse humotex (CH).setiap fraksi dianalisis komponen hara total dan hara terlarut dengan pembandingan kompos aerobic. pengujian.toksisitas hanya dilakukan terhadap DWD, H, kompos aerobic dengan kontrol  air suling, yaitu untuk mengetahui tingkat toksisitas bahan tersebut terhadap perkecambangan tanaman cress.                hasil penelitian menunjukan bahwa DWD mengandung NH4+, K+ dan Na+ yang sangat tinggi. konsentrasi hara pada humotex tidak banyak berbeda dengan kompoe, kecuali Fe, Mn dan Zn pada humotex terdapat dalam bentuk yang tidak larut karena pH yang tinggi (7,5-8). fraksi halus dari humotex mengandung hara total dan hara terlarut yang lebih tinggi dari frahsi kasar.kadar logam berat pada humotex sesual dengan ambang betas yang dipersyaratkan.sirat toksisites humotex lebih rendah diandingkan dengan kompos aeribik.                secara umum berdasarkan sifat-sifat diatas dapat disimpulkan bahwa DW dapat digunakan sebagai kompos dengan jumlah kompos perhektar yang belih kecil dibandingkan dengan humotex atau kompos aerobik. baik DW atau humotex akan sangat berguna untuk meningkatkan pH dari tanah yang asam dan rendah kadar haranya disebabkan oleh tingginya  CEC dan pH. kelarytan Fe, Mn dan Zn akan meningkat dalam aplikasi pengomposan di lapangan herena pengaruh pen-campuran kompos dengan tanah akan. menurunkan pH tanah. 
PENGABUH BERAT LABUR DAN KADAR PENGISI PEREKAT TANIN FORMALDEHIDA TERHADAP KETEGUHAN BEKAT LAPIS santoso, adi; memed, rodjak; sutigno, Paribotro
Jurnal Penelitian Hasil Hutan Vol 9, No 3 (1991): 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.1991.9.3.111-114

Abstract

It has been known that  tannin formaldehyde  resin  is suitable for exterior plywood  adhesive. one   of the source of tannin is Acacia decurrens bark. A study on using tannin formaldehyde from.  Acacia  decurrens   bark has been done  to predict  the effect of  glue spread  and percentage of filler on the plywood   bonding strength. The results show that glue spread has not sigatficant effect on plywood  bonding strength, while percentage of  filler  has significant effect on plywood  bonding strength and all plywood resulted meet German  Standard requirement for  exterior purpose. (AW 100).From  the economic paint of view,  it is recommended. to use glue spread of 150 g/m2 and percentage of filler of 4o%. 
MASALAH KEPECAHAN KAYU DALAM PENEBANGAN DI HUTAN JATI Endom, Wesman; Mansyur, Maman
Jurnal Penelitian Hasil Hutan Vol 9, No 3 (1991): 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.1991.9.3.103-110

Abstract

This preliminary research. was conducted with the aim of gathering uarious felling aspects in teak forests  (Tectona grandia  LF), which will be  used  for desining a practical, simple, and cheap equipment  to reduce log split  during felilng operation.it is found  in  the field  that the deviation of  falling direction in conventional method wa  larger than that  in mechanical method. An  average stump  height Was  still high and therefore, needs  improvement. This will increase the volume   of wood and income of the feller.  Therefore, appropriate control and  counselling of fellers are required.The  secondary data showed  that log splits may occur at  the bottom,  midle and top of tree felled. In Songgom (53 tree  samples), the  split occured :  18.9% at the bottom,  67.9%  at the midle and 13.2% at the top. In  cipeundeuy  (50  trees  samples), the  figures  were 6% at the   bottom,  46% at the  midle and 48% at the top.
KEADAAN JALAN HUTAN DI HUTAN JATI DAN POTENSINYA DALAM AKSELERASI EROSI TANAH Tinambunan, DJaban
Jurnal Penelitian Hasil Hutan Vol 9, No 3 (1991): 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.1991.9.3.129-136

Abstract

An  inuestigation  on  forest  road conditiona  in teak forests  of  Cepu and Randublatung   Forest Districts and their soil erosion potentials  was conductild   in  early  1991.  The samples  of  roads  inuestigated  were  30  segments   in Cepu and  14 segments   in  Randublatung   each  of  60  m long.It  is found   that  from  the  total  of  266 km  truck  roads  in Cepu, only  3.7%  of  them  are in 2% are active roads. for the 180 km rail roads, 65.4% are in good conditionsIn Randublatung. the total  length of  truck  roads is 237  km  of  which  only  11.8%  are in good  conditiouns  but  78.3%  are active roads For rail roads, the total length is only  33 km  and only  13.5% of  them are in good  conditionsThe total  area used for road infrastructures (combined   truck  and  rail roads)  in cepu  and Randublatung   are 266  ha (0;8%) and 163 ha  (8.5%), respectively. This means that an average land lost due  to roading is 0. 7%.All  factors in the  USLE  for  the  teak forest  areas of  Cepu  and Randublatung are in the level of low  scores in terms of  soil erosion  acceleration  potentials  except   soil erodibility.   It is  noticed  in the field  that this soil erodibility factor is couered  by other  dominant facton   and. therefore,  soil  erosion potentials  of  forest roads roads are generally low.

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