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Peronema Forestry Science Journal
Published by Universitas Sumatera Utara
ISSN : -     EISSN : -     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Arjuna Subject : -
Articles 27 Documents
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Search results for , issue "Vol 5, No 3 (2016): Peronema Forestry Science Journal" : 27 Documents clear
ANALISIS VEGETASI TUMBUHAN BAWAH PADA AREAL LAHAN BEKAS TAMBANG EMAS RAKYAT Jeskiel Sipayung; Delvian Delvian; Kansih Sri Hartini
Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The activity of mining has negative effects to the soil both physical, chemical, and biological. In Physically the structure of the soil, its texture, and porosity will be broken. Mine waste (Tailing) will influence in plant growth because the tailing contained mercury (Hg), lack of micro and macro nutrition and lack of organic substances. Reclamation activities are needed. As a starting point on reclamation, it is a need to be known what locally ground cover which can live in a mining field will be recommended to be planted. This research purposing on knowing what the type of ground cover vegetation which exist on field area of ex civillian gold mining in Kecamatan Naga Juang Kabupaten Mandailing Natal, knowing soil chemical condition for parameter pH, organic-C, available-P, KTK, choose cover vegetation potential for reclamation actifity. Vegetation data collection done in 20 m x 20 m plot purposively arranged, then the K (density), KR (relative density), F (frequency), FR (relative frequency), and INP (important value index) will be analyzed. Result of the research showing that there are 23 type of ground cover vegetation; Paspalum conjugatum, Micania micrantha, Acmella uliginosa, Paspalum comemersorili, Ageratum conyzoides, Crassocephalum crepidioides, Bidens sp, Sida rhombifolia, Solanum torvumn, Ipomea hederaceae, Diplazium esculentum, Calopogonium mucunoides, Borreria sp, Centrosema pubescens, Andropagu aciculatus, Borreria laevis, Amaranthus sp, Cucumis sp, Colocasia esculenta, Chrysopogon sp, Physalis anguleta, Urena lobata, Polygala paniculata. Condition for parameter pH: somewhat acid, organic-C: low, available-P: moderate, KTK: moderate. From those 23 type, there are 5 ground cover potential as pioneer plant based on the highest INP; Paspalum conjugatum (INP: 73,108), Micania micrantha (INP: 36,757), Acmella uliginosa (INP: 10, 968), Paspalum comemersorili (INP: 10,067), Ageratum conyzoides (INP: 9,016). Keywords: gold mining, field reclamation, ground cover  
UJI POTENSI FUNGI PELAPUK PUTIH ASAL BATANG KAYU EUKALIPTUS (Eucalyptus grandis ) SEBAGAI PENDEGRADASI LIGNIN Gepsy Onardo Silaban; Edy Batara Mulya Siregar; Lutfhi Hakim
Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Lignin is a polymer which has heterogen and complex structure and composed of alcohol coniferil, alcohol sinaphil, and alcohol kumaril so that hard to change. This research aimed to get white rot fungi isolat at eucalyptus wood and measure the ability of Lignin Peroksidase Enzim (LiP) of white rot fungi from eucalyptus wood as degrading lignin. Sample was get from Kesatuan Pengelolaan Hutan Lindung Tobasa area, North Sumatera. Type of white rot fungi originated from Eucalyptus grandis was Phanerochaete sp.1, Phanerochaete sp.2, and Exidia sp. Based on mend of LiP activity result, Exidia sp was the most potential for biopulping because it has highest activity point about 0,037 (U/MI). Key word : lignin peroksidase, eucalyptus wood, Bavendamm test, LiP test
Eksplorasi Mikoriza pada Lahan Bekas Tambang Emas Masyarakat di Mandailing Natal Sahat A. Sihombing; Delvian Delvian; Deni Elfiati
Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The mycorrhizal is affected by biotic and abiotic factor. The purpose of this research is to explore the mycorrhizal on the soil of former gold mine community in Mandailing Natal so that we know the types of native mycorrhizal of the area. The data got from this research used to helps land reclamation efforts by the application of mycorrhizal on land mine. This activity will improve the condition of the damaged environment or increase productivity of the land. This research use soil separating method to obtain spores and root coloring method to find out root colonization. Result from this research is 2 genus spores are found they are genus Acaulospora 5 types of spores / 10 g soil and genus Glomus 11 types of spores / 10 g soil. The percentage of mycorrhizal colonization on former gold mine community in  Mandailing Natal is revolve between 8,12% - 28,55% .Key words: Mycorrhizal, genus Acaulospora and genus Glomus, former gold mine land community
MORFOLOGI PERAKARAN TUMBUHAN MONOKOTIL DAN TUMBUHAN DIKOTIL Dany Roy Putra STG; Budi Utomo; Afifuddin Dalimunthe
Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Rooting on the tree is a very important base in growth and development of trees. Not only provide mechanical reinforcement to maintain the structure a tree straight up, but also essential for the absorption of water and minerals. In plants, there are two types of rooting that is tap root on dicots plants and fiber roots in monocots plants. This research can provide information related to the behavior of plant roots on both dicots and monocotyledons and some comparisons root growth between year plant dicots with seasonal and year monocot plants and seasonal. This research was conducted in October 2015 through February 2016 by observe directly in the field. There are twenty species of plants accurate divided into 5 year dicots plants, 5 seasonal dicots plants, 5 year monocot plants and 5 monocot plants seasonal. The results showed the behavior of plant root, root characteristics and a comparison growth of year plant roots and seasonal Keyword : Root, Root Behavior, Monocot, Dicots
KUALITAS PAPAN PARTIKEL DARI LIMBAH BATANG KELAPA SAWIT DAN MAHONI DENGAN VARIASI PELAPIS BILAH BAMBU TALANG Fradika Oktavianus Bernadi Siahaan; Rudi Hartono; Tito Sucipto
Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Efforts to improve particle board quality was made from oil palm trunks waste and mahogany by coating the surface of the particle board using lath of talang bamboo. The purpose of this research to evaluate physical and mechanical properties of particle board that made from oil palm trunks and mahogany combination by lath of talang bamboo coating variation and to determined strength wood class from coating variation by lath of talang bamboo when optimal utilization. Treatment variations were without coating; face coating with the inside lath of bamboo, and face coating with the outside lath of bamboo; face and back coatings with inside and outside lath of bamboo. Thick coating from inside and outside lath of bamboo was 0.1-0.2 mm. Particle board size was 25 cm x 25 cm x 1 cm, density target was 0.7 gram/cm3, pressure was 30 kgf/cm2 and temperature was 170 oC for 10 minutes. The result of research will be compared with SNI 03-2105-2006 and PKKI-ni-5 in 1961. Statistic analysis used single completely randomized design with three repetitions. The result of these research showed that density value, moisture content, water absorption on 2 hours and 24 hours submersion, thickness swelling on 2 hours and 24 hours submersion, MOE value, MOR value, and IB value were 0.56-0.68 gram/cm3, 3.29-4.42%, 40.09-78.50% and 53.04-87.15%, 9.04-19.17% and 11.88-24.68%, 9,975.76-72,900.41 kg/cm2, 81.64-578.70 kg/cm2, and 0.91-2.59 kg/cm2, respectively. Coating variation by lath of talang bamboo were significantly affected on all of physical and mechanical particle board quality. The best treatment was on face and back coating variation that each used inside and outside lath of talang bamboo which had fulfilled all of the physical and mechanical SNI 03-2105-2006 and included into III of strength wood class according to PKKI-ni-5 in 1961.Key words: talang bamboo, oil palm trunks, mahogany, particle board, physical and mechanical properties
PENGARUH KOMPOSISI PLASTIK POLIPROPILENA DAN PARTIKEL BATANG PISANG BARANGAN TERHADAP KUALITAS PAPAN PLASTIK Winda Martogi Situmeang; Tito Sucipto; Apri Heri Iswanto
Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Banana trunk is agricultural waste which is potentially as one of the solutions to be used as a material utilization berlignoselulosa products such as plastic boards. The purpose of this study was to evaluate the effect of the composition of the plastic PP and banana stem particles to quality plastic board and determine the best composition for the physical and mechanical properties of plastic boards. Making plastic boards using a variation of the composition of polypropylene plastic (PP) and banana stem particles are 50:50, 60:40, 70:30 and 80:20. Mixing materials is done by using an extruder machine and compression board sheets using hot compressed at a temperature of 170 0C pressure of 25 kgf/cm2 for 10 minutes. The sample size of 25 cm x 25 cm x 1 cm3 with a target density of 0.7 g/cm3. Data analysis was carried out using a completely randomized design (CRD) with three replications.   The results of this study compared with SNI 03-2105-2006. The density value of from 0.52 to 0.73 g/cm3, 1.67 to 4.32% moisture content, water absorption in immersion 2 hours from 1.88 to 11.41%, and 24 hours immersion 5.38 to 28,48%, thickness swelling at 2 hours of immersion from 0.21 to 0.41%, and 24 hours from 0.43 to 0.69%, MOE 2710-6170 kgf/cm2, MOR 50.72 to  128.49 kgf/cm2, IB 1.11 to 2.94 kgf/cm2. Variations in the composition of the plastic polypropylene (PP) and banana stem particles affect the physical and mechanical properties of plastic boards. Treatment on the composition of 70:30 is the best treatment for physical and mechanical properties of plastic boards.Keywords: banana stems, plastic polypropylene, physical and mechanical properties, wood polymer composite
ANALISIS KERUGIAN DAN PEMETAAN SEBARAN SERANGAN RAYAP PADA BANGUNAN SEKOLAH DASAR NEGERI DI BAGIAN TIMUR KOTA PEKANBARU Nico Christian; Yunus Afifuddin; Lutfhi Hakim
Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Termites were one of the most important wood destroying organisms because of the damage caused by it was the largest compared with other wood destroying organism. One of the targets of termites attacks that were rarely investigated were school buildings. The purpose of this research was to get the amount of damage and economic losses caused by termites attacks on public elementary school buildings in the Pekanbaru city. The mapping of the distribution of termite attack by using a Geographic Information System (GIS). The method used in this research is purposive sampling which means directly choose the samples that were going to be selected as the subject of the research. From the result of the research, it was found that 100% of public elementary school buildings sampled attacked by termites with the percentage of 43,33% suffered moderate damage and 56,67% suffered minor damage. Keywords: Termites, School building, Economic losses.
EKSPLORASI TUMBUHAN OBAT DI HUTAN LINDUNG LUMBAN JULU KECAMATAN LUMBAN JULU KABUPATEN TOBA SAMOSIR Alexander Manurung; Yunus Afifuddin; Lamek Marpaung
Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Lumban Julu protected forest had a huge potential in supply of raw material of medicinal plants. The research was conducted to explore the medicinal plants in the forest. This research aimed to identified species of medicinal plants, analyzed diversity of medicinal plants and analyzed secondary metabolites of medicinal plants. This exploration research of medicinal plants had three stages method. First stage was local knowledge aspect with survey local knowledge. Second stage was biodiversity aspect of medicinal plants with analysis of vegetation data collection. Third stage was phytochemical aspect with detected contain of secondary metabolites. Medicinal plants were obtained as many as eight species with the highest importance value index was Paet-paet (Tithonia diversifolia) at 39.46 and the lowest importance value index was Ciplukan Mini (Physalis minima) at 10.92. Value Shannon-Wiener index of general diversity  (H`) at 1.83, this is showed that the diversity of medicinal plant species in Lumban Julu protected forest was medium. Secondary metabolites test showed Ciplukan Mini (Physalis minima) had complex secondary metabolites. Keyword: Exploration, medicinal plants, secondary metabolite
PENDUGAAN CADANGAN KARBON TUMBUHAN BAWAH PADA KEMIRINGAN LAHAN YANG BERBEDA DI HUTAN PENDIDIKAN UNIVERSITAS SUMATERA UTARA KABUPATEN KARO Sartika EC Siallagan; Muhdi Muhdi; Diana Sofia Hanafiah
Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The purpose of this study were to determine the potential of carbon on under storey level and to determine the effect of slope on a large or small carbon stocks in understorey in education forest University of North Sumatera District Karo. The research was conducted in April 2015. Data was collected by using purposive sampling with random start. Plot size is 20m x 20m as 6 plots with 3 plots in area ramps and 3 plots in steep terrain. Data were collected by destructive methods. The results showed that 14 species are found under the ramps region and 12 species on the steep region. Potential carbon found in the ramps region that is equal to       93,08 kg/ha and the potential of the carbon contained in the steep region that is equal to 83,84 kg/ha. The carbon in the ramps region is larger than in the steep region. Keywords: carbon, understorey, ramps region, steep region, education forest University of North Sumatera
RESPON CYLINDROCLADIUM SP. TERHADAP FUNGISIDA BERBAHAN AKTIF METIRAM SECARA IN VITRO Sri Martina Suseno; Edy Batara Mulya Siregar; Ridwanti Batubara
Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Cylindrocladium sp. is a pathogen cause disease that attack eucalyptus and  it  was the highest type of disease that attack eucalyptus in toba pulp lestari. Fungicide was used to eradicate and prevent the growth of pathogens. One of the fungicide which  used was systemic fungicide with active substance metiram 70 %. The purpose of this study was to measure the area, diameter, density of the spore ,and to characterize the hyphae form of Cylindrocladium sp after being treated metiram 70 % in vitro in different concentrations. Sample that used taken from cylindrocladium collection from previous research. The result of this study showed that the most efective concentration of fungicide treatment in inhibiting growth and development area of cylindocladium sp was treatment 2,0 mg/ml. In observation of spore density and hyphae structures of cylindrocladium sp, the fungicide that given was able to give tangible effect but in observation of relative inhibiton, concentration of fungicide gave intangible effect in providing inhibition to pathogen of cylindrocladium sp.Keywords: eucalyptus, cylindrocladium sp, fungicide, metiram, in vitro

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