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INDONESIA
Jurnal Penelitian Hasil Hutan
Published by Badan Penelitian dan Penegembangan Kehutanan
ISSN : 02164329     EISSN : 24428957     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Decision Sciences, Operations Research & Management
Arjuna Subject : -
Articles 1,559 Documents
 32   33   34   35   36 
ANALISIS KIMIA BATANG AREN (ARENGA PINNATA MERR) YANG BERASAL DARI CIANJUR DAN ANALISIS PENDAHULUAN KAYU AREN YANG BERASAL DARI SUMATERA BARAT Gusmailina Gusmailina; Hartoyo Hartoyo
Jurnal Penelitian Hasil Hutan Vol 9, No 5 (1991): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (18593.5 KB) | DOI: 10.20886/jphh.1991.9.5.177- 182

Abstract

This article describes  about  Chemical  analysis of aren stem  (Arenga  pinnata  Mcrr) from   Cianjur  and preliminary   analysis aren wood from   West Sumatera.   The analysis comprised  of the determination    of holocelluloce,  lignin, pentosan,   tannin,  ash content,  silica content,  and the solubility  in cold  water,  hot  water,  one  percent  of sodium   hydroxide   and  alcohol-benzene   extractives.   The  analysis  were conducted   to determine  the chemical  component   of  aren stem from  Jasinga,   Bogor  and  chemical  component   of  coconut  wood.The average of holocelluloce,   lignin,  pentosan,   tannin,  ash and silica, extractives content,  solubility  in sodium  hydroxide   of peripheral portion  for  aren stem from   Cianjur  were consecutively   as follow:    67,79  %,  22,17  %,  19,43 %,  4,07  %,  0,94  %,  0,67  %,  5,62  %  (in hot water),  5, 14 % (in cold  water),  2,69  % (in alcohol-benzene),    24, 79 % in sodium   hydroxide   1   %.   While for  the central portion,   the above analysis  showed   averages  as follow   :  48,07  %,  22,95  %,  19,3  %,  16,98  %,  4,41  %,  3,92  %,  17,51  % (in hot  water),  12,81  % (in cold water),  7,83  %  (in akohol   benzene),   31,12  % in sodium   hydroxide   1   %.The average of holocelluloce,   lignin, pentosan,   tannin,  ash and silica, extractives content,  solubility  in sodium  hidroxide.  of  aren wood (peripheral  portion)  for  63,93  %,  27,08  %,  11,17 %,  5,12  %,   1,50   %,   0,99  %,  1,02 %  (in cold  water),  2,99  %  (in hot  water) 4,50  %  (in alcohol-benzene),   28,69  % in sodium  hydroxide.   While for  the ruyung  enau,  the above  analysis showed  averages as follow  :  68,83  %,  22,93 %,  14,0  %,  5,78  %,  1,25  %,  0,92  %,  0,22  %  (in cold  water),  3,01  %  (in hot  water),  3,98  %  (in alcohol-  benzene),   35,57  %  in sodium hydroxide.Based  on  chemical  analysis  and  the comparison   to the coconut  wood  gave  a low pentosan  and  ash content from   coconut  wood.  On the contrary  had  a high  tannin,  extractives  and silica content  to coconut  wood.
PENGARUH SUDUT KERAT DAN BAGIAN BATANG TERHADAP SIFAT PENGGERGAJIAN KAYU KELAPA (Cocos nucifera. L.) Osly Rachman
Jurnal Penelitian Hasil Hutan Vol 3, No 2 (1986): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2327.218 KB) | DOI: 10.20886/jphh.1986.3.2.28-32

Abstract

Eighteen green cocowood samples, 3 m in length each were sawn into 3 cm thick boards. Trunk samples consisted of two groups, butt logs and top logs. Each group was sawn with 3 degrees of hook angle, namely 19,22 and 25 degrees. Sawing properties, i.e., power consumption, sawing productivity and lumber recovery were related with hook angle and trunk portion. The results reveal that trunk portion and hook angle had a significant effect on power consumption. The butt logs consumed power higher than top logs. Trunk portion had no effect on sawing productivity but greater hook angle tends to increase the productivity. Hook angle and trunk portion had no effect on recovery.
SIFAT FISIK DAN DIMENSI SERAT KAYU MANGIUM BERUMUR EMPAT TAHUN DARI DAERAH SEBULU, KALIMANTAN TIMUR Sigit Baktya Prabawa
Jurnal Penelitian Hasil Hutan Vol 23, No 5 (2005): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (5410.767 KB) | DOI: 10.20886/jphh.2005.23.5.339-348

Abstract

Acacia mangium Wild. termasuk famili Leguminoceae. Jenis ini umunmya di Indonesia dikenal sebagai mangium, sedangkan di luar negeri dikenal juga dengan nama sabah salwood, black wattle, hickory wattle atau brown salwood. Pohon ini merupakan species asli dari Maluku, Papua Baral, Papua Nugini, Australia and Queensland. Untuk tujuan komersial, sangat beralasan memilih mangium sebagai jenis yang perlu dikembangankan di areal Hutan Tanaman Industri di Indonesia karena sifat-sifatnya yang cukup istimewa.Tujuan dari penelitian ini adalah untuk mengetahui beberapa sifat fisik dan dimensi serat dari kayu mangium berumur 4 tahun yang berasal dari Sebulu, Kalimantan Timur dan mencoba mengkaitkan dengan kemungkinan penggunaanya.Hasil penelitian ini memperlihatkan bahwa kerapatan kering udara, berat jening kering tanur, dan kadar air kering udara dari kayu mangium berumur 4 tahun berturut-turut adalah 0,48 gr/cm3, 0,40 dan 19%; Nilai rataan dari panjang serat, diameter serat, diameter lumen dan tebal dinding berturut-turut adalah 782,4 μ, 21,7 µ, 16,3 μ and 2,8 μ.
KEKUATAN KAYU LAMINA YANG DIBUAT DARI TIGA JENIS KAYU Suparman Karnasudirdja
Jurnal Penelitian Hasil Hutan Vol 6, No 5 (1989): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6277.409 KB) | DOI: 10.20886/jphh.1989.6.5.281-287

Abstract

The  results  of  strength   test  of  solid  and glue  laminated   timbers  represented   by  Kapur,  Teak  and  Red  Meranti  are reported  in this paper.  The method   used for  the  testing  was the  ASTM  D 143-1970.For  the purpose   of  the  test,  8 x  12 x  400  cm  lumbers  of  the  three species  were divided  into  two groups  being de- signated  respectively  for  test  in solid  and glue  laminated    form.   The  first  group  were tested  for modulus of rupture,  com- pression  parallel  to  the grain and shear strength  under  air dry  condition.  In  bending  tests,  two  methods  of  loading  were applied,  namely  perpendicular   and parallel  to  the  laminae   in case  of glue laminated   timbers,  and along radial or tangential direction  for solid timbers.The  second   group   were  resawn  further   into  0. 9  cm  and   1.  9 cm  thick    timber  strips,  respectioely,   for  small size tests  of  the  glue  laminated  specimens.    The  0.9  cm  thick  strips  which  were air-dried  and   then   glued  with   CIBA  Phenol resorcinol-formal-dehyde     adhesives,  were designated   for  test  on  modulus   of  rupture  and  compression.    The  1.9   cm   thick strips  were divided  further   into  five  batches,   and each of which  were dried respectively  until  25,  20,  15,  10 and  5 percent moisture   content   before   glueing  with  the  above   mentioned   adhesive   into  six  different  combination   of  test pieces  namely Teah-Meranti   (JM),   Teak-Kapur  (JK),  Meranti-Kapur    (MK),  Kapur-kapur   (KK),   Teak-Teak     (JJ) and  meranti-Meranti    (MM).The  results  of  the  tests  are presented   in  Table   1   and  2  for  modulus   of  rupture   and  compression  parallel  to  the grain;  and Tabel 3 and 4 respectively  for  the shear   tests of the six  lamination   combination.
SEGMENTASI PASAR JASA REKREASI RUTAN Satria Astana
Jurnal Penelitian Hasil Hutan Vol 15, No 5 (1998): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7162.075 KB) | DOI: 10.20886/jphh.1998.15.5.323-336

Abstract

The significant implication of research on further development of forest recreation service depends on the progress of market research on the service itself. As a part of the effort to addressing such issue, this study aims at identifying the market segments of recreation service at three sample forest units, namely: Carita, Situgunung and Sukamantri, all in West Java. The study reveals that university students, private officers and high school students, mostly living in Jakarta, were respectively significant variables for segmenting markets of the service offered. In addition, the marketing management of the service has been ineffectively designed, targeted and promoted to other growing markets such as young families with middle income status.
UJI COBA PENGGUNAAN GAS PANAS DARI TUNGKU GASIFIKASI KA YU KARET UNTUK PENGERINGAN BUI COKLAT Tjutju Nurhayati
Jurnal Penelitian Hasil Hutan Vol 12, No 5 (1994): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1550.696 KB) | DOI: 10.20886/jphh.1994.12.5.164-168

Abstract

 Hot gas of rubber wood burning on wood gasifier-combustor with capacity 3 mBTU used for cacao seed  drying at temperature ranged from 68 to 74° C. The moisture content of cacao seed prior to drying was varied from 141.93 to 7.14 %.The trial results revealed that the average of hot gas flow rate was 118.47m3/hour, rubber wood consumed  was 0.33 kg per kg dry cacao seed or 1.03 kg per wet cacao seed, with the moisture content of rubber wood ranged from 11.64 to 14.34 %. The flow rate of drying was 134.63 dry cacao seed per hour and the efficiency of hot gas conversion was 54%. The energy of hot gas consumption was 2.79 MJ per kg cacao seed and the productivity was 94. 67 KJ per kg cacao seed per hour. 
KEADAAN ELEMEN JALAN HUTAN DAN POTENSINYA DALAM MEMPERCEPAT EROSI TANAH Djaban Tinambunan
Jurnal Penelitian Hasil Hutan Vol 6, No 3 (1989): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (8382.508 KB) | DOI: 10.20886/jphh.1989.6.3.171-177

Abstract

A  study  on  the  forest  road  element   conditions   in relation  to soil  erosion  potentials   was carried out  at two  logging companies   in Buntok   area,   Central  Kalimantan   in  1988.  Road   elements   measured   in  the  field  are those  related  to  the Universal Soil  Loss  Equation   factors  such  as road openings,  surfaces,  slopes,  ditches,  culverts,  cuts,  fills, diversion  ditches, and the incidence  of  vegetation.The  results  showed   that  forest   road  elements   are in  the  condition   of  high potentials   for  accelerating  soil  erosion.Factors  that  caused  this problem,   as identified   in the field,  are:  long and steep  slopes,  wide ground  openings,  and  bare soil surfaces,  in addition   to  the  originally  sensitive  to  erosion  soil  type,  and  hot  and  wet  weather.Qualitatively,   it is realized  that soil erosion  is quite  serious.  Therefore,  further  study  is necessary  in order  to find  the quantitative   amount   of  soil erosion  occured  in  the  area.
EFEKTIVITAS ASAP CAIR DARI LIMBAH TEMPURUNG KELAPA SEBAGAI BIOPESTISIDA BENIH DI GUDANG PENYIMPANAN Arinto Nugroho; Imas Aisyah
Jurnal Penelitian Hasil Hutan Vol 31, No 1 (2013): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2847.833 KB) | DOI: 10.20886/jphh.2013.31.1.1-8

Abstract

Asap cair merupakan hasil kondensasi proses pirolisis kayu pada suhu sekitar 400°C. Asap cair mengandung berbagai komponen kimia seperti fenol, aldehid, keton, asam organik, alkohol dan ester. Senyawa fenol, asam dan alkohol dapat berperan sebagai antioksidan dan antimikroba (antibakteri dan antifungi). Penelitian ini dilakukan untuk menguji efektivitas asap cair dari limbah tempurung kelapa sebagai bahan alternatif untuk mengendalikan serangan organisme pengganggu benih di gudang penyimpanan benih yang terdapat di lingkungan Departemen Perbenihan Tanaman, Vocational Education Development Center for Agriculture (VEDCA) Cianjur. Tahap pertama penelitian ini adalah pembuatan asap cair dari tempurung kelapa, tahap selanjutnya adalah penyemprotan asap cair pada benih jagung dan kedelai secaramerata, dengan 4 konsentrasi yang berbeda yaitu 0% (kontrol), 0,5%, 1%, 2%, masing-masing perlakuan dilakukan dengan 3 kali ulangan, kemudian dilakukan pengeringan kembali sampai kadar air benih optimal, selanjutnya dikemas dalam karung terigu dan disimpan dalam waktu yang sama yaitu 72 hari. Pada hari ke-0, ke-36 dan hari ke-72, diambil beberapa sampel benih untuk uji daya kecambah dan uji kesehatan benih.Perlakuan asap cair dengan konsentrasi 0,5%, 1%, dan 2%, berpengaruh nyata terhadap perkecambahan benih jagung dan kedelai, setelah disimpan sampai 72 hari di gudang, dan konsentrasi 0.5% menunjukkan hasil yang terbaik.
ANATOMI DAN IDENTIFIKASI 21 JENIS KAYU KURANG DIKENAL Y I Mandang
Jurnal Penelitian Hasil Hutan Vol 9, No 1 (1991): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (24693.398 KB) | DOI: 10.20886/jphh.1991.9.1.5-23

Abstract

Grau and anatomical features of 21 leaer known wood species (10 families) were described and comJH11"814 There are 10 out of 21 species which have deco1Utiveappearances.i.e. Solenospermum javanicum, Luminitaera  littorea. Mutixia trichotoma,  Blumeodendron tokbrai,  Neoscbartechinia kingii, Pimeleodendron amboinicum,  Gymnostoma sumatranum, Wienmania blumei, Dillenia ex.celsaand Erythroxy Ion cuneatum.For identification purpo•• •veral  important features were noted. They  occur at least in one mt1mberof the follow- ing families: 1) veael  solitary  and radialy grouped in Caauarinaceae;.2) ueuel crou section are polygonal in Comaceae and Cunoniaceae; 3) intervet111elpit vestured in Combretaceae and Dipterocarpaceae; 4) Tylosis sclerotic in Euphorbiaceae;5) parenchyma banded or reticulate in Casuarinaceae, Celaateraceae, Cunoniaceae and Euphorbiaceae; 6) fiber storied in Datiscaceae; 7) 'fibers  uaually with  bordered pit at radial face in Erythrox.ylaceaeand Eupho:rbjaceae;8) vaacicentric bw1aflid in Casuarinaceae, Cunoniaceae and Dipterocarpaceae; 9) axial inter..celularcanal in Oomaeeae and Dipterocar- paceae; 1 O) raphide crystal in ray cells of Dilleniaceae;11) Disjunctive end wall in upright ray cells of Euphorbiaceae.Revision of  the formerly known  as Casuarina sumatrana Jungh. et de  Vriese into .Gymnostoma  sumatranum  L. A.S. Johnaon is BUJ)t)rted by anatomical charocters.
ALTERNATIF ARANG AKTIF SEBAGAI SOIL CONDITIONING PADA TANAMAN Gusmailina Gusmailina; Gustan Pari; Sri Komarayati; Tati Rostiwati
Jurnal Penelitian Hasil Hutan Vol 19, No 3 (2001): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (10444.618 KB) | DOI: 10.20886/jphh.2001.19.3.185-199

Abstract

This paper deals with experimental results of utilizing activated charcoal of bamboo and candle nut as a plan 'ts soil conditioning. In this regard the plant species for the experiment was Eucalyptus urophylla with respect to the growth of its seedlings. Further, this experiment was intended to evaluate the effect of activated charcoal to as added to the media of Eucalyptus urophylla seedlings on their growth, and to asses the role of activated charcoal in improving soilfertility.The media for the seedling growth consisted of top soil mixed with activated charcoal of either bamboo or candlenut, compost, and mycorrhiza. The mixture was manipulated into various compo­ sition and further regarded as a treatment. The media consisting of only topsoil was also used as a control.The parameters as observed were number of leaves, increase in height of Eucalyptus urophylla seedlings, weight and dry weight ofplant, weight of root portion infected by mycorrhiza, and weight ratio of the top to root portion of the plant (T/R ratio). Further, the analyses of nutrients in the media consisted of N, P, K, Ca, and Mg contents before and after experiment.Result showed that the media containing activated charcoal of bamboo are more preferable than that of candlenut, this is because the former media could stimulate the increase in the height of plant seedlings by 27 percent, enhance the additional number of leaves by 29, increase the T/R ratio by 28 percent, and provide better mycorrhyzza growth than the latter media (i.e. containing activated charcoal of candlenut). Further, when the media containing top soil and activated charcoal of bamboo were added with compost, it could stimulate the growth in 4.8 times as much as height of E. urophylla plant.

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