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Peronema Forestry Science Journal
Published by Universitas Sumatera Utara
ISSN : -     EISSN : -     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
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Articles 28 Documents
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Search results for , issue "Vol 4, No 2 (2015): Peronema Forestry Science Journal" : 28 Documents clear
KELEMBAGAAN KELOMPOK TANI HUTAN DI KECAMATAN BARUSJAHE KABUPATEN KARO SUMATERA UTARA br Ginting, Laura Julita; Batubara, Ridwanti; Herianto, Herianto
Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Institutional has an important role in supporting the people’s forest management. The institution started from a group which has the same characteristics and purpose. The purpose of this study is to know the institutional system of forest farmer groups in the forest management, such as land management activities, structural and cultural aspects, institutional objectives, membership and leadership, and institutional capacity in the Rumanis Village, Pertumbuken Village, and Sikab Village. The results of this research showed that the land management activities include: land cleanup and nurseries, weeding, replanting, thinning, and fertilization. Leader in select based professionalism owned by the leadership. Institutional system of forest farmers groups in district of  Barusjahe has the same purpose to reduce deforestation and made members better. Institutional capacity is still as organizer of counseling and help to solved the problems of farmers. Keywords: Institutional, Farmers Group, Forest
Penghilangan Tinta Kertas Koran Bekas dalam Pembuatan Papan Komposit Plastik Afri Soni Wanson Samosir; Tito Sucipto; Lutfhi Hakim
Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The objective of this research were to evaluate the effect of paper deinking on physical and mechanical properties of plastic composite board (fiber plastic composite). Deinking process using detergents with a concentration of 0%, 10%, 15%, 20%, and 25%. Clean pulp produced an acceptable material, while lathering ink that leaves the pulp was an rejected ingredient. The resulting composite board tested and their mechanical and physical properties compared to standard JIS A 5905-2003 hardboard S20 and JIS A 5908-2003 particleboards type 13. The results showed that the value of the density, moisture content, water absorption, thickness swelling, MOE, MOR, and IB were respectively from 0,61-0,69; 4,58-5,93; 29,62-39.81; 5,09-9,89; 0,96-1,22; 6,56-8,70; and 0,77-0,98. Testing that fulfill the standard requirement were testing the density, thickness swelling, and internal bond. Keywords: plastic composite board, polyethylene plastic, detergent concentration, physical and mechanical properties
KUALITAS PAPAN PARTIKEL DARI KOMPOSISI PARTIKEL BATANG KELAPA SAWIT DAN MAHONI DENGAN BERBAGAI VARIASI KADAR PEREKAT PHENOL FORMALDEHIDA Ahmad Roihan; Rudi Hartono; Tito Sucipto
Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Oil palm trunk and mahogany’s particle can be used as material particle board. The aim of these study was to evaluated, particle board quality made from compositions of oil palm trunk and mahogany’s particle with several variation of phenol formaldehida adhesive and also to determine the best treatment of this research. Particle board made with size 25 cm x 25 cm x 1 cm. Composition variations particle oil palm trunk and mahogany were 100:0, 75:25, 50:50, 25:75 and the PF adhesive were 8%, 10%, 12%. The results were compared with the SNI 03-2105-2006 standard. This study used using a completely random experimental factorial design with 2 factors and 3 replication. The results showed that of density value was 0.50-0.59 g/cm3, moisture content was 8.43-11.09%, water absorption in immersion  for 2 hours was 35.68-58.64%, and 24 hours was 56.01-77.43%. Thickness swelling on immersion for 2 hours was 4.76-10.15%, and 24 hours was 9.73-13.07%, the value of the MOE was 6170-9594 kg/cm², MOR values was 52.37-81.62 kg/cm². Variations of the PF adhesive and composition oil palm trunk and mahogany’s particle doesn’t give the effect of physical and mechanical properties significantly except density. All of MOE and MOR value didn’t fulfill the standards, where as but the density, moisture content value had fulfilled SNI 03-2105-2006 standards. The best treatment in this results was at 75:25 and adhesive 8%. Keywords: oil palm trunk, mahogany’s, phenol  formaldehyde, physical and mechanical, particle board.
EKSPLORASI TUMBUHAN OBAT PADA TAMAN NASIONAL GUNUNG LEUSER, RESORT SEI BETUNG, SUMATERA UTARA Khairul Ambri; Yunus Afifuddin; Aswita Hafni
Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Medicinal plants have a very important role for world health that need to be done of research to analyze the diversity of medicinal plants. Medicinal plants exploratory research had been done in the Gunung Leuser National Park, Sei Betung Resort from Juny to Agustus 2014. Medicinal plant species are known to be recorded and identified. The results of the identification of medicinal plants has been done in Gunung Leuser National Park, Sei Betung Resort  found as many as 27 types of medicinal plants.The dominant species is Melastoma malabathricum. The diversity of medicinal plants in the  Gunung Leuser National Park, Sei Betung Resort Hutan classified as moderate. Keywords: Medical plants, Gunung Leuser National Park and Diversity of plants
EKSPLORASI TUMBUHAN BERACUN PADA TAMAN NASIONAL GUNUNG LEUSER RESORT SEI BETUNG , SUMATERA UTARA Yosua Simanullang; Yunus Afifuddin; Aswita Hafni Lubis
Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Indonesia is one nation that has a very extensive tropical forests. Types of diverse plant are largely not been identified promising a great opportunity as a source of useful chemical compounds. Biopesticides are one of the products made from poisonous plants that can be an alternative to the use of chemical pesticides. Biopesticide producing plant species very much and making it relatively easy. By utilizing a poisonous plant as biopesticides, the use of synthetic pesticides can be reduced. This study is expected to be the basis of research methods in the development of poisonous plants in Indonesia. This poisonous plant exploration research aims to identify and analyze the types of chemical compounds of poisonous plants in Gunung Leuser National Park Resort Sei Betung, North Sumatra. The method used is purposive sampling plots with spacious circular plot of 0.05 acres.This research had three phases. The first was aspect local knowledge with survey local knowledge. The second was aspect biodiversity with analysis of vegetation data collection. And the third was aspect phytochemical with detect the contain of secondary metabolit. The kinds of Poisonous plant found in the Gunung Leuser National Park Resort Sei Betung were Hibiscus heterophyllus, Crhysanemum sp., Macaranga denticulata, Macaranga hypoleuca, Pteruspermum javanicum, Artocarpus dadah, Macaranga gigantea, Clidemia hirta. The result of this research showed that all of kinds of aromatic plants contained secondary metabolit. Keywords: Eksploration, Poisonous plant, Phytochemical, Biopesticide.
KUALITAS PAPAN PARTIKEL DARI CAMPURAN AMPAS TEBU DAN PARTIKEL MAHONI DENGAN BERBAGAI VARIASI KADAR PEREKAT PHENOL FORMALDEHIDA Ivan Mikael; Rudi Hartono; Tito Sucipto
Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The purpose of this study was to evaluate the effect of variations in the composition of bagasse and mahogany’s particle with phenol formaldehyde adhesive variation levels on quality particle board also to determine the best treatment. The dimension of sample test was 25x25x1 cm with a density target of 0.7 g/cm3. The composition between bagasse and mahogany’s particle were 60:40, 70:30, and 80:20. While for the PF adhesive level were 10%, 12.5%, and 15%. The results showed that  density, moisture content, water absorption for 2 hours and 24hours, thickness swelling for 2 hours and 24 hours, MOE, MOR, and IB were 0.57-0.64 g/cm3, 8.40-12.64%, 29.44-91.41% and 55.50-123.28%, 5.68-18.33% and10.26-32.34%, 3893-9475 kg/cm2, 51.88-106.23 kg/cm2, and 0.49-0.71 kg/cm2. Statistical analysis in this research used factorial randomized completed design and the results were compared with JIS A 5908-2003 standard. The result showed that some of the test on particle board not fulfilled the standard, such as internal bond and MOE. However, all of density and moisture content had fulfilled the standard. Thickness swelling test on particle board composition of 80:20 and adhesive content of 15% had fulfilled standard. MOR test on particle board composition of 80:20 and adhesive content of 10% as well as composition of 60:40 and adhesive content of 12,5% had fulfilled standard. The best result of treatment from this research was a partcle board made from composition of 80:20 and 10% levels of PF adhesive. Keywords:particleboard, bagasse, mahogany, adhesive content, phenolformaldehyde
KUALITAS PAPAN PARTIKEL DARI CAMPURAN SABUT KELAPA DAN PARTIKEL MAHONI DENGAN BERBAGAI VARIASI KADAR PEREKAT PHENOL FORMALDEHIDA Heber Fransiskus; Rudi Hartono; Tito Sucipto
Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Coco fiber and mahogany can be used as raw material for the manufacture of particle board. Quality of particle board was affected by several things. One of them was affected by particle’s composition and adhesive levels. The aim of this research was to evalated the affect of particle’s composition and adhesive levels, and also to find the best treatment. The dimension of sample test was 25x25x1 cm with a density target of 0.7 g/cm3. The composition between coco fiber and mahogany were 60:40, 70:30 and 80:20. The adhesive used were phenol formaldehyde with composition of 10%, 12.5% and 15%. Testing the quality of particle board refers to the standard JIS A 5908-2003. The results showed that some of the test on particle board not fulfiled the standards of JIS A 5908-2003, such asMOE and MOR. However, all of density test on particle board had fulfilled the standard. Moisture content test on particle board compositionof 80:20andadhesive content of 12.5% had fulfilled the standard. Thickness swelling test on particle board compositionof 60:40and adhesive content of 15% had fulfilled the standard. And also internal bond test on particle board compositionof 60:40 and 70:30 with adhesive content of15% had fulfilled the standard. The best treatment of this research were a particle board made from compostion of 60:40 and adhesive content of 15%. Keywords: particle board, coco fiber, mahogany, physical and mechanical properties, phenol formaldehyde
Variasi Lama Perendaman dan Konsentrasi Phenol Formaldehida terhadap Kualitas Papan Lamina dari Batang Kelapa Sawit Syafrina Talenta Lumbangaol; Rudi Hartono; Tito Sucipto
Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

One way to approve laminated board quality of palm oil trunk was soaked the laminated board  with phenol formaldehyda (PF). The purpose of this study was to evaluate the influence soaking time variation and concentration PF than to determine the best treatment in this research. Laminated board was consisted  3 (three) layers with size 45 cm (length) x 7 cm (width) x 3 cm (thick). The variation of these research were soaking time (10 minutes, 2 hours, and 24 hours) and PF concentration (5.10.15. and 20% ). These study used random experimental factorial design and the results were compared with JAS 243:2003 standard. Results showed weight gain value, density, moisture content, water absorption 2 hours and 24 hours, thickness swelling on immersion 2 hours and 24 hours, thickness swelling on immersion 2 hours and 24 hours around, delamination test, modulus of rupture, and modulus of elasticity. Result showed that 3.82-15%, 0.39-0.47 g/cm3, 11.66-14.16%, 36.15-46.38%, and 78.87-98.65%, 2.5-11.58% and 5.13-17.58, 0%, 170.23-250.15 kg/cm2, and 17224-43767 kg/cm2. Moisture content and delamination values have fulfilled  JAS 243:2003 standard. The other hand, MOE and MOR values were not fulfilled yet. The best treatment laminated board made from palm oil trunk was to immerse 10 minutes consentration 15%.
VARIASI KOMPOSISI PEREKAT UREA FORMALDEHIDA DAN BAHAN PENGISI STYROFOAM TERHADAP KUALITAS PAPAN PARTIKEL DARI LIMBAH BATANG KELAPA SAWIT Zainal Abidin Syah Polem; Tito Sucipto; Rudi Hartono
Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The waste of oil palm trunks be redundant is alternative basic commodity manufacture particleboards. The purpose of this research was to evaluate the physical and mechanical properties of particle board made from oil palm trunk with variation of urea formaldehyde adhesives and padding Styrofoam particle board. The variation using for the urea formaldehyde adhesives and padding Styrofoam  was  100 : 0 %, 90 :10%, 80 :20%, 70 : 30% and 60 :40 %.  The boards were made with size 25 cm x 25 cm x 1 cm with  density  of 0,70% g/cm3. Particleboards using 10% and press 25 kg/cm2 by the padding  Styrofoam. The temperatures was 1300 and the pressing times was 10 minute. Particleboards was tested for physical and mechanical properties.The results showed that although the density values ​​ranged from 0.565 - 0.627 g/cm ³, the water content of 7.45 - 8.23​​ %, DSA ​​81.66 - 111.84%, PT 9.99 to 16.35% MOE 6419.87 - 8660.58 kg/cm2, MOR 53.638 - 81.167 kg/cm2 and IB 0.85 - 6.11 kg/cm2. Entire physical properties have fulfilled to SNI 03-2105-2006 standards. All the mechanical properties have not fulfilled to the standards except internal bond with SNI 03-2015-2006 100 treatment: 0 % and 90: 10 %. Keywords: oil palm trunks, urea formaldehyde, styrofoam, particle board, physical and mechanical
EKSPLORASI TUMBUHAN OBAT DI KAWASAN GUNUNG SIBUATAN, KECAMATAN MEREK, KABUPATEN KARO, SUMATERA UTARA Eben Ezer Silaban; Yunus Afifuddin; Ridwanti Batubara
Peronema Forestry Science Journal Vol 4, No 2 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The research of medicinal plants has been carried out in the mountain region Sibuatan, district Karo. The research aimed to identified the types of medicinal plants in mountain Sibuatan. Basic research methods in the development of medicinal plants had two stages. The first stage is the aspect of local knowledge with local knowledge survey. The second stage is the aspect of biodiversity with the analysis of vegetation data collection. They are 16 type of medicinal plants in mountain regions Sibuatan : Rubus reflexus, Impatiens balsamina, Nicolaia speciosa, Vitis gracilis, Solanum verbacifolium, Eupatorium odoratum, Nepenthes spectabilis, Nepenthes tobaica, Nepenthes gymnamphora, N.spectabilis x N. gymnamphora, Calamus diepenhorstii, Leersia hexandra, Melastoma candidum, Sida rhombifolia, Curculigo sp, Macodes petola. Keywords: Medicinal Plants, Mountain Regions Sibuatan, species.

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