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INDONESIA
Peronema Forestry Science Journal
Published by Universitas Sumatera Utara
ISSN : -     EISSN : -     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Arjuna Subject : -
Articles 304 Documents
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SIFAT ANTIRAYAP EKSTRAK KULIT BIJI SAGA (Adenanthera pavonina Linn) Antitermites Properties Of Extract Shell Seed Saga (Adenanthera pavonina Linn) Lensi Mian Sinaga; Rudi Hartono; Luthfi Hakim
Peronema Forestry Science Journal Vol 2, No 2 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The aims of these research were to know the extract content of saga seed shell, to evaluated weight lost of cellulose paper, to evaluated mortality of termites and to evaluated termites consumption. Research was done by extracting sample with methanol then partitioning with n-hexane. Concentrated extractive  of 2%, 4%, and 6% were used the toxic test of the termite Coptotermes curvignathus. The Result showed that extract content  of saga seed shell was 15.82%. Mortality with concentration of 2%, 4% and 6% were not significantly so the concentration of 2% was effective, eficien and happened in 6th day. The tendency showed that increasing concentration of extract caused decreasing of weight lost of cellulose paper and consumption of termites. The percentage weight lost of cellulose paper was 3.88%–11.04% and consumption of termite was 0.26–0.73 mg. The extract with concentration of 2% was effective based of evaluated from mortality, weight lost of cellulose paper and rate consumption of termites. Keyword : Saga, Extractive, Concentration, Toxic, Termites
INFORMASI KEBAKARAN HUTAN DAN LAHAN BERDASARKAN INDEKS KEKERINGAN DAN TITIK PANAS DI KABUPATEN SAMOSIR Pardamean Abadi; Rahmawaty Rahmawaty; Yunus Afifuddin
Peronema Forestry Science Journal Vol 2, No 2 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Samosir District is one of the very prone to forest fire and land. This study aimed to determine the level of fire danger in forest and land use data Samosir regency with the maximum temperature, rainfall and hot spots daily, monthly and yearly 2009, 2010 and 2011. Data analysis was performed at the Laboratory of the Faculty of Forest Inventory Forestry Department of Agriculture using exel Spreadsheet software and Arc. View 3.3. The number of hot spots are detected and the high drought index obtained occur when rainfall is low and did not even rain. Low rainfall occurred in March-July, so in the many forest fires and land. While high rainfall occurred in August-February. Hot spots and drought indices can be used together as an early warning system for the prevention of fire and forest fire management and land on Samosir District. The research showed that the level of the fire crisis in Samosir Regency tend to to lower where fire was only became of the certain months during the year that is during the month of Maret-Juli. The prediction of fire Danger in Regency of Samosir be at the month of Maret-Juli, where very low rainfall value so that assess the high KBDI with the value make an index to the dryness be at the scale high-extreme that it’s among  1500-1749 and 1750-2000 Keywords : Forest and Land Fire Information, fire crisis, Dryness Index, Hotspot
PEMANFAATAN DAN PEMASARAN ROTAN OLEH MASYARAKAT KABUPATEN SAMOSIR (Studi Kasus di Desa Huta Galung, Kecamatan Harian, Kabupaten Samosir) Ricky Situmorang; Ridwanti Batubara; Yunus Afifuddin
Peronema Forestry Science Journal Vol 2, No 2 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Rattan (Calamus sp) is a forest plant that has many benefits for forest communities and a source of  foreign exchange. This study aims to known the utilization of rattan by the community, determine income from the use of rattan and non rattan and to analyzed the marketing of rattan. This research used field surveys and interview to the community. Based on research conducted known pattern rattan harvesting is done by rotation. Income from rattan smaller than non-rattan with the percentage utilization of rattan 43.8%, while non-rattan 56.20%. Marketing rattan starting from rattan farmers sell rattan to collector and collector which will sell directly to craftsmen. Keywords: Rattan, Income, Marketing
Keanekaragaman Vegetasi Tanaman Obat di Hutan Pendidikan Universitas Sumatera Utara Kawasan Taman Hutan Raya Tongkoh Kabupaten Karo Sumatera Utara Riwanda Sembiring; Budi Utomo; Ridwanti Batubara
Peronema Forestry Science Journal Vol 2, No 2 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

This study aims to determine the function and the diversities of medicinal plant that contained at the educational Forest of North Sumatra University, Bukit Barisan Forest Park, Tongkoh village, District of Karo, North Sumatera. This study was held in May to August 2012. The study was conducted at such altitude categories: <1000 masl; 1000 - 1500 masl, and ≥ 1500 masl. Observations were made on five different lines in each height category. Observation path length is 100 m. Determination of the first line is done by purposive sampling method, the path is determined by systematic sampling plots spaced 200 m. Observation and collection of medicinal plants using sampling methods plot measuring 20 m x 20 m. Observations conducted exploratory medicinal plants. The number of medicinal plant species found in each height category successive 34 species, 30 species, and 28 species. Total all kinds of medicinal plants found are 38 species. Keywords: Diversity of Medicinal Plants, Medicinal Plants, Educational Forest of North Sumatera University, TAHURA Bukit Barisan.
Pengaruh Penambahan Patikel dan Ukuran Partikel Limbah Batang Kelapa Sawit Sebagai Subtitusi Pasir Terhadap Kualitas Paving Block Lusi H Manalu; Irawaty Irawaty; Tito Sucipto
Peronema Forestry Science Journal Vol 2, No 2 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The wastes of palm’s trunk will be increasingly along with the extensive of palm’s plantation in Indonesia. It is a lignocelluloses material that can be used as raw materials for the manufacture of paving block, although the exact composition and size to produce good paving block unknown. Therefore, there is a research by using the variation of composition of paving block 1:2:3:0.5, also the addition of the palm oil’s trunk is substituted with sand as the mixture of paving block with 2.5% and 5% as the composition and the particle size is 20 also 40 mesh. The objectives of this research are to evaluate the characteristic and the influence of the addition the trunk of palm oil to the paving block quality. The results of testing the mechanical and physical properties of paving block with treatment levels of particle and particle size based on SNI 03-0691-1996. The results are from 14.89 to 29.14 MPa is the quality of B-C. The results of testing the physical properties, water absorption 0.42%-1.51%,i.e. The quality of A, 9.2% -11.89% porosity, resistance to sodium sulfate does not fill the standard with decreasing weight from 0.57 to 1.89% . Almost all of the characteristics of the paving block treatments comply SNI 03-0691-1996. Keywords: cement, oil palm, paving blocks, mechanical and physical properties.
Peningkatan Kualitas Papan Komposit Limbah Batang Kelapa Sawit (Elaeis guineensis Jacq.) Dengan Berbagai Water Repellent M. Hakim Muslim; Luthfi Hakim; Yunus Afifuddin
Peronema Forestry Science Journal Vol 2, No 2 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Ever-increasing demand for wood and forest potential of shrinking demand the use of wood in an efficient and prudent, for example by utilizing waste oil palm trunks which have not been optimally utilized a high-quality products for the future. The purpose of this study was to test the stability and strength of composite boards from waste oil palm trunks with a ratio of water-resistant coating acrylic of various brands. The hypothesis of this study is the differences between different brands of acrylic that affect the physical properties and mechanical properties of composite boards from oil palm trunk waste. There are three treatments in this study, which refers to the first treatment of the outer coating of the composite board with a water repellent Aquaproof brand, treatment of both the outer coating with MultiGuard composite board, and the third with a Waterproof coating. Testing of physical properties and mechanical properties refer to JIS A 5908-2003. The results showed that physical properties of the density has reached the target density with a value of 0.8 gr/cm3, where the density range of 0.78 - 0.82 gr/cm3, water content ranged from 8:23 to 9:11%, water absorption ranged from 8.69 - 10.86%, the development of thick for 2 hours ranged between 3.1 - 4.92% and thickness development during the 24 hours range from 11:34 to 15:53​​%. Meanwhile, for the results of testing the mechanical properties of obtained results of an internal bond 8:19 ​​- 10.81 kg/cm2, a strong grasp of the screw 56.29 - 59.55 kgf, MOE 21124.08 - 31852.83 kg/cm2 and MOR reached 279.62 - 378.36 kg/cm2. Keywords: palm wood, composite boards, isocyanate, acrylic, and water repellent.
BAHAN ANTI NYAMUK (Mosquito repellent) dari AKAR TUBA (Derris elliptica (Roxb.) Benth) (Material Mosquito Repellent of Tuba Root (Derris elliptica (Roxb.) Benth) Miduk Sihombing; Yunus Afifuddin; Luthfi Hakim
Peronema Forestry Science Journal Vol 2, No 2 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The use of chemicals to control insects such as mosquitoes can have a negative impact on the environment and humans. The use of natural ingredients that are toxic and environmentally friendly like tuba plant (Derris elliptica (Roxb.) Benth) is one solution that is expected to be used as an alternative ingredient for protection against insects. This study research to determine the exact manner and evaluate extractive toxicity tuba root extract (Derris elliptica (Roxb). Benth) as an mosquito repellent by examining the effects of tuba root methanol extract and tuba  root chloroform extract  with different concentrations (0%, 2%, 4%, and 6%) on mortality and the mortality rate of mosquitoes. The results showed that there was a very significant effect of extract of tuba root against mosquito death. Tuba root with a concentration  6% is considered the most effective for killing 50% of mosquitoes. The results indicate that the tuba roots chloroform extract has its toxicity and  very high potential to be developed into an mosquito repellent. Keywords: Derris elliptica (Roxb.) Benth, tuba root, mosquito repellent, toxicity, mortality.
INVENTARISASI GULMA PADA TEGAKAN TANAMAN MUDA Eucalyptus spp. (Weed Inventory on stand of young Eucalyptus spp.) Rahmat Faisal; Edi Batara Mulya Siregar; Nelly Anna
Peronema Forestry Science Journal Vol 2, No 2 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Eucalyptus spp is a fast-growing plant species that have economic value and multifunction primarily developed as a raw material for the pulp extensively. Weeds is one factor that can inhibit the growth of Eucalyptus spp.This study aims to inventory the types of weeds present in young Eucalyptus spp. and know the composition and dominance of the types of weeds that were needed in the management of industrial plantations of Eucalyptus spp. The research was conducted at PT. Toba Pulp Lestari, Tbk Aek Nauli sector in March-June 2011. The results showed that the diversity of weed found in Eucalyptus spp plantation consisted of 15 families and 39 species were relatively similar and were dominated by the family Rubiaceae, Asteraceae, Melastomataceae, and Poaceae. Borreria sp, Clidemia Hirta, Commelina difusa and Imperata cylindrica was  an important and very dominant weed in all young Eucalyptus spp planting area. Keywords: Inventory, Eucalyptus spp, weeds.
Analisis Kelayakan Finansial dan Strategi Pengembangan Pembibitan Mangrove di Desa Percut, Kecamatan Percut Sei Tuan, Kabupaten Deli Serdang Rijal F Banjarnahor; Agus Purwoko; Yunasfi Yunasfi
Peronema Forestry Science Journal Vol 2, No 2 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The aim of this research were to know the process and tecnique of mangrove nursery, the level of financial feasibility of mangrove nursery and to knew the development strategy of mangrove nursery business. The method of data collecting of this research was interview and observation. The evaluation of financial analysis was done by production cost and revenue analysis. Then was followed by analysis of R/C ratio and Break Event Poin (BEP), and the development strategy analysis was used SWOT analysis. The result show that the techniques of nursery was done by tradisional way. The nursery stage area: selection of place, nursery place, fruit selection, manufacture of seedlings and maintenance of seedling. The business of mangrove nursery feasible to run due to the R/C ratio more than one. The R/C ratio for R. Stylosa, R. Apiculata, Soneratia, Bruguiera sp. Were 1,2642, R. Mucronata was 2,4737 and A. Marina was 1,1939. Based on the SWOT analysis, the current position of the mangrove nursery rides was in quadrant III. It showed that business of mangrove nursery was many threat, but had a great opportunity to develop. Keywords: Mangrove, nursery, financial analysis, SWOT
Identifikasi Keanekaragaman Jenis Burung di Kawasan Restorasi Resort Sei Betung, Taman Nasional Gunung Leuser / (Identification Diversity of Bird Species in Restoration Area at Sei Betung Resort, Gunung Leuser National Park) Duma Fransisca Sihotang; Pindi Patana; Erni Jumilawaty
Peronema Forestry Science Journal Vol 2, No 2 (2013): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Forest damage in any ways will determine all of the organism inside include the birds. Forest restoration is a positive step that would help to recover back the forest. Bird is one of bio-indicator of forest condition. This research was needed not only to compare the diversity of  birds between restoration area and primary forest (middle and edge forest), but also to know the species of birds which could adapt in both areas. The research was conducted in June – July 2012 at Sei Betung Resort, based on the IPA (Indices Ponctuels d’Abondence) or Point Count method. The result showed that bird diversity index in middle forest is 3,586 as well as in edge forest is 3,554. Both results are categorized as high diversity level, while the restoration area is categorized as middle diversity level with 3,095 index value. Some birds were founded in both areas such as Wreathed hornbill (Aceros undulatus), Emerald dove (Chalcophaps indica), Black magpie (Platysmurus leucopterus), Short-toed coucal (Centropus rectunguis ), Greater coucal (Centropus sinensis), Lesser coucal (Centropus bengalensis), Buff-rumped Woodpecker (Meiglyptes tristis), Rufous woodpecker (Celeus brachyurus), Red-breasted parakeet (Psittacula alexandri), Yellow-vented bulbul (Phycnonotus goiavier), Cream-vented bulbul (Pycnonotus simplex), Black-headed Bulbul (Pycnonotus atriceps), Red-whiskered bulbul (Pycnonotus jocosus), Ashy tailorbird (Orthotomus ruficeps), Rufous-tailed tailorbird (Orthotomus sericeus), Magpie robin (Copsychus saularis). Key words: bird diversity, bird adaptation, primary forest, restoration area

Page 6 of 31 | Total Record : 304

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