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Jurnal Penelitian Hasil Hutan

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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

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Articles 1,559 Documents

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PRODUKTIVITAS DAN BIAYA ALAT HASIL REKAYASA DALAM PENGELUARAN KAYU JATI DI DAERAH CURAM Wesman Endom
Jurnal Penelitian Hasil Hutan Vol 31, No 1 (2013): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Pada studi ini dikaji pengeluaran kayu balak pada medan sulit dengan sistem kabel layang menggunakan mesin kecil yarder prototipe alat Expo generasi-II yang bertenaga 5,5 PK. Kayu balak ditarik dari petak tebang ke pinggir jalan angkutan yang berada di atas lereng pada jarak sejauh 50 m. Produktivitas yarder baru tercapai rata-rata 0,6363 m3/jam berarti masih di bawah target kisaran 2,5 -5 m3/jam. Biaya investasi Rp 72.000.000 atau sebesar Rp 102.986/jam atau Rp 156.351/m3. Analisis finansial menggunakan data aktual kinerja alat dan pada harga sewa alat sama dengan biaya pengeluaran kayu diperoleh nilai NPV dan IRR negatif. NPV dan IRR positif saat harga sewa lebih besar yaitu Rp 185.000/m3.

PENGAWETAN TIGA JENIS KAYU UNTUK BARANG KERAJINAN MEMAKAI DUA JENIS BAHAN PENGAWET BOR SECARA RENDAMAN DINGIN Sasa Abdurrohim
Jurnal Penelitian Hasil Hutan Vol 10, No 2 (1992): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Three Wood species, i.e. tusam (Pinus merkusii Junh. et De Vr.), karet (Hevea brasiliensis Muell. Arg.) and jeungjing paraserianthes falcataria (L.) Nielsen) were treated with two bor preservatives using cold soaking method. The two preservatives used were borax at 5 % level and the mixture of borax and boric acid at 10 % level. The soaking periods were 1, 3, 5 and 7 days. Forty samples of the size 5 x 5 x 50 cm were used for each species and each treatment in thisn experiment. The avemge moisture content of the samples for each species were 29 .9 %, 31. 9% and 30.3% respectively.The results showed that two species, i.e. tusam and karet achieved the minimum standard on preservative retention and pentatiue. The required minimum retention for borex preservative is 8. 7 kg/m3, whereas for the mixture of borax and boric acid is 8.4 kg/m3. The required minimum penetration for both preservatives is 10 mm.The .study recommended that tusam should be treated in 5 days using borax preservative or 1 day using the mixture of borax and boric, both with cold soaking method. The treatment for karet was recommended to use the mixture of borax and boric acid within 3 days.

UJI ASAL SUMBER BIBIT NILAM (POGOSTEMON CABLIN BENTH.) DI PASAMAN BARAT SUMATERA BARAT Ahmad Junaedi; Asep Hidayat
Jurnal Penelitian Hasil Hutan Vol 28, No 3 (2010): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Uji asal sumber bibit nilam di Pasaman Barat, Sumatera Barat perlu dilakukan sebagai salah satu tahapan untuk meningkatkan produktivitas hasil panen dan minyak nilam. Penelitian ini dilakukan untuk menguji tiga asal sumber bibit nilam di Pasaman Barat, Sumatera Barat. Rancangan acak kelompok dilakukan pada penelitian dengan menguji tiga asal sumber bibit nilam sebagai perlakuan yaitu bibit nilam asal Tapak Tuan, asal Dairi dan Sidikalang. Hasil penelitian menunjukkan bahwa pertumbuhan, potensi produksi terna kering, potensi produksi minyak nilam dan kulitas minyak terbaik ditunjukkan oleh nilam asal sumber bibit asal Dairi. Pemanenan pada umur sebelas bulan setelah tanam, nilam asal bibit Dairi menghasilkan potensi produksi terna kering 19,4 ton/ha, potensi produksi minyak 208 kg /ha dan kandungan patchouli alkohol 44,57%.

STUDI PEMANFAATAN TIGA JENIS FUNGI PADA PELAPUKAN DAUN DAN RANTING MANGIUM DI TEMPAT TERBUKA Djarwanto Djarwanto
Jurnal Penelitian Hasil Hutan Vol 27, No 4 (2009): 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.2009.27.4.314-322

Studi dekomposisi daun dan ranting mangium (Acacia mangium) dari limbah tebangan, menggunakan tiga isolat fungi pelapuk yaitu Schizophyllum commune HHBI-204, Marasmius sp. HHBI-346 dan Pycnoporus sp. HHBI-348, dan diinkubasikan selama 30 hari di tempat terbuka, di Bogor. Tingkat dekomposisi contoh uji dievaluasi berdasarkan perubahan kandungan karbon organik, nitrogen total, kadar unsur hara, dan kapasitas tukar kation (KTK). Hasilnya menunjukkan bahwa inokulasi fungi berpengaruh terhadap kandungan kimia daun dan ranting mangium. Nisbah C/N contoh uji berkisar antara 33,1-36,4. Kandungan unsur hara makro tersebut yaitu N 0,75 - 0,86%, P 0,26 - 0,35%, K 0,21 - 0,25%. Sedangkan nilai KTK berkisar antara 21,46 - 26,12 me/100g. Pada umur inkubasi 30 hari, peran fungi pelapuk sebagai aktivator dekomposisi daun dan ranting mangium belum cukup nampak.

VOLUME DAN KLASIFIKASI LIMBAH PENEBANGAN PADA BEBERAPA PENGUSAHAAN HUTAN DI ACEH DAN KALIMANTAN TIMUR Sampe Radja Simarmata; Dulsalam Dulsalam
Jurnal Penelitian Hasil Hutan Vol 2, No 2 (1985): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

A study on volume and classification of logging waste has been carried out in several forest companies in Aceh, North Sumatra, and East Kalimantan. Average wood waste volume at the logged over areas having diameter range from 10 to 39 cm with one meter in length or more were measured using the Brereton method.The results of this investigation reveal that:I. Logging waste volume in Aceh range from 26,46 to 29,08 m3/ha with an average of 27,85 m3/ha. In North Sumatra the value ranges from 22,94 to 38,66 m3/ha with an average of 28,90 m3/ha. It was formed that in East Kalimantan the logging waste ranges from22,00 to 81,94 m3/ha with an average of 52,38 m3/ha.2. The average wood waste at felling site was higher in the forest companies in East Kalimantan.3. Logging waste consists predominantly of those classified as 10 to 39 cm in diameter with 4 m length or more.4. The average volume of logging waste classifiedas 10 to 19 cm in diameter with 4 m length of more in Aceh, North Sumatra and East Kalimantan are consecutively 17,5 m3/ha,16,9 m3/ha and 24,9 m3/ha.

PENGAWETAN LIMA JENIS KAYU UNTUK PERUMAHAN SECARA RENDAMAN DINGIN DENGAN BAHAN PENGAWET CCB Sasa Abdurrohim; D Martono
Jurnal Penelitian Hasil Hutan Vol 20, No 4 (2002): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Investigation about the cold-soaking treatment has been conducted on five wood species (i.e. keruing, nyatoh, melur, pulai and meranti merah) for housing purposes. The penetrating preservative for this case was CCB (copper-chrome-boron) chemicals. Before being treated. the wood specimens measuring 3 - 5 cm (in length) by 3 - 5 cm (in width) were prepared from each of the five species. Such specimens could not be treated by implementing the conventionally prescribed treating schedule. because the measurement of preservative retention at such schedule should follow the revised standard/schedule which differed from the conventional one. Hence, in cold-soaking treatment using CCB preservative, the specimens of wood species for such purpose had to be modified in their sizes/shapes.Three different sizes/shapes were prepared, i.e. beam, truss, and rafters; and then were allowed to reach their air-dry moisture contents. Afterwards. they underwent cold-soaking treatment using CCB preservative in two different concentrations (i.e. 5 percent and 10 percent). Meanwhile. the soaking durations implemented for each concentration were consecutively 3,5 and 7 days.The results revealed that all the wood species in all three sizes/shapes (i.e. beam. truss. and rafters)could be treated using the revised schedule. Except for meranti in truss and rafter. Related as such. the revised treating schedule for these five species has been appropriately devised.

PENINGKATAN KUALITAS KEMENYAN DENGAN MENGGUNAKAN PELARUT ORGANIK Bambang Wiyono
Jurnal Penelitian Hasil Hutan Vol 13, No 8 (1995): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

This experiment is intended to improve the quality of the several types of benzoin by using an aceton solvent. The benzoin consisted of four samples with decreasing order of quality: "mata kasar", "mata halus", "jurur" and "abu". All of these samples were obtained from Tarutung North Sumatera. A general linear models procedure in the SAS computer package was employed to analyze the effect of the acetone solvent extraction and benzoin quality on physico chemical properties of benzoin.Results showed that the acetone solvent extraction. type of benzoin and the interaction of both gave a highly significant effect on moisture contens. Softening points, number of saponifications, solubility in ethanol. ash contents. benzoin acid, calculated as cinnamic acids; except the effect of interaction on softening points. Furthermore, the LSD analysis between means indicated that there were significant differences on physico - chemical properties among the type of benzoin, exclude the means value of solubility in alcohol between "mata kasar" and "mata halus". and between "jurur" and "abu". There was also no significant difference on an ash content means value between "mata kasar" and "mata halus". This aceton solvent extraction increased tire quality of "mata kasar" and "mata halus" benzoin to meet the first and tire second quality requirement of the Indonesian National Standard. respectively. However, the softening point of jurur benzoin did not meet second quality requirement of this standard. Overall, the aceton solvent extraction can improve the quality of benzoin as indicated by an increase in benzoin value, calculated as cinnamic acids, and a decrease in dirt content value.

FAKTOR KOREKSI VOLUME DOLOK YANG DIUKUR DI SUNGAI (LOGPOND) (Correction factor of logs volume meaured in logpond) Wesman Endom; Sukanda Sukanda
Jurnal Penelitian Hasil Hutan Vol 11, No 4 (1993): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Measuring the volume of logs which have been rafted on the rivers is very difficult. The difficulty is mostly in measuring the average top and bottom diameters of logs because the largest portion of logs are inside the water.In this paper, the results of measurements carried out both on the ground and in the river are described. Lately, log measurement in the river is necessary because:a. Volume of logs sent to industries would be measured in the river.b. Many logs of the illegal cutting found are rafted in the river.The observation reveals that :1. Volumes of logs measured on the ground and in the river are significantly different.2. From the sample of 60 logs of Dryobalanops spp. it is found that the total volume measured on the ground is 273,18 m3, while the total volume measured in the river is 262, 76 m3. The total difference is 10,42 m3 or 0,04 m3 per_m3 in average.3. the correction factor (FK) then is 0,04 m3 per m3 or 3,81 %. It means that the volume of log measured in the river is smaller than the volume Measured on the ground. Therefore, the volume measured in the river should be multiplied with the correction factor of 1.04 to obtain the real volume as measured on the ground.

MODEL PENDUGAAN LIMBAH DALAM PENGUPASAN VENIR KAYU MERANTI DAN RAMIN Suwidji Basuki; Rachman Effendi
Jurnal Penelitian Hasil Hutan Vol 5, No 2 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

The wood waste in plywood manufacturing can be used as fuel in the boiler so it is worth while to know how much waste is produced. The data obtained can be used as input to determine the amount of fuel to be purchased from outside source.In plywood making most waste is produced at peeling process, i.e. at rotary cutter, it could make up to 80 % of the total waste produced.This study showed that the waste of individual log is significantly affected by log diameter and log quality, the relationship is given by regression model.

BEBERAPA SIFAT FISIS DAN KIMIA BRIKET ARANG DARI LIMBAH ARANG AKTIF Gustan Pari; Djeni Hendra; Hartoyo Hartoyo
Jurnal Penelitian Hasil Hutan Vol 7, No 2 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

The result of a study on briqueting charcoal from activated charcoal residue, prepared by using the hydraulic press process is presented in this paper. The residue : was subjected to two different treatments, namely unwashed and washed with water. Following the treatment, each residue material was mixed with starch adhesive, using four different concentrations: 0 percent, 1 percent, 2 percent and 3 percent, consecutively.The respons evaluated from the briquetted charcoal are the moisture content, ash content, volatile matter, fixed carbon, density, crushing strength and calorific value. The result shows that moisture content ranges from 3,36 - 5,56 percent, ash content from 8,06 - 12,78 percent, volatile matter from 23,56 - 41,28 percent, fixed carbon from 45,9 - 68,38 percent, density from 0,6471-0,7985 gr/cm, crushing strength from 0,79 - 6,33 kg/cm and the calorific values ranged from 5243,25 - 6378,84 cal/gr.

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