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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 304 Documents
 27   28   29   30   31 
INTERPRETASI TUTUPAN LAHAN DI KESATUAN PENGELOLAAN HUTAN LINDUNG MODEL UNIT XIV TOBA SAMOSIR Ade Putri Nugraha Harahap; Rahmawaty Rahmawaty; Riswan Riswan
Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Land Cover information is very important for the existence of a community forest management to organize the forest management based on the Ministry of Environtment Forestry decision; such as structuring and preparation of the forest management plans, forest utilization in terms of monitoring and control the licence holder, forest utilization in certain region, forest rehabilitation and reclamation, forest protection and nature conservation. The aimed of this study to classify land  cover types. This study was conducted in April to May 2015 in Forest Management Unit XIV Toba Samosir. The method of remote sensing by using Landsat image 8 in 2014. The result of this study showing that there were land cover types in KPHL Unit XIV Toba Samosir. They were secondary dryland forest, forest plantation, dryland farming, shrubs, and water. Dryland Agriculture type was the most dominating the land cover with 36,89%. Overall accuracy in this study is 0,98%. Keywords : Forest Management Unit XIV Toba Samosir, Image of landsat 8, Land Cover, Mapping
POTENSI WISATA ALAM DI KESATUAN PENGELOLAAN HUTAN LINDUNG MODEL UNIT XIV TOBA SAMOSIR Esra Barus; Rahmawaty Rahmawaty; Pindi Patana
Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The region of  Unit XIV  Toba Samosir Forest Management Unit (KPHL Model Unit XIV Toba Samosir) has potential  ecotourism which are spreaded in several locations. The potential flora and fauna is one of the attractions of ecotourism in this region. This study aimed  to identify the potential of nature tourism in the area of KPHL Model Unit XIV Toba Samosir. The research was conducted from April to May 2015 use a survey method. There were five lines which can be develoved into an ecotourism region, they were Bukit Manja, Sampuran Jangga Dolok, Susur Sungai Lumbanjulu, Ekowisata Hutan Desa, Rumah Tarzan. Based on Eligibility  Value, KPHL Toba Samosir  ecotourism region deserves to be developed. The name of the track are bukit manja, sampuran jangga dolok, susur sungai lumbanjulu, ekowisata hutan desa, rumah tarzan.Keywords: Bukit Manja, Ecotourism, Forest Management Unit, Toba Samosir 
Penggunaan Sabut Kelapa Sebagai Penahan Air Untuk Mendukung Pertumbuhan Tanaman Sukun (Artocarpus communis Forst) Pada DTA Danau Toba Abdul Khaliq Hasibuan; Afifuddin Dalimunthe; Budi Utomo
Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The forest area in the DTA Lake Toba reduced to thousands of hectares, resulting in a lot of open land, the land's ability to absorb water is reduced and so the land becomes dry land productivity declined DTA Lake Toba. Breadfruit plants can increase the productivity of land and can be used as a plant reforestation to prevent erosion. Coconut Fiber is one of the media that has the physical properties of water can hold 6 to 8 times the weight of the dry, and can improve soil structure and texture, increase soil absorption of water, increase the activity of soil microorganisms and as a source of nutrients for plants. The purpose of this study was to determine the effect of various sizes of coco to the growth of breadfruit. Coconut coir is used ranging in size from 100 grams to 1000 grams. This research was conducted in June-October 2015 in the DTA Lake Toba, District Silahisabungan, Dairi. Parameters measured were high seeds, seedlings diameter, canopy area, number of leaves and leaf water content. The results showed that administration of coco significant effect on the growth of high- fiber treatment kelpa 600 g ( K6 ) with an average value of 5.88 cm compared to the control treatment ( K0 ) with an average value of 4.13 cm . no real effect on the parameters of observation diameter , wide canopy , leaf number , and leaf water content on the growth of seedlingsKeywords: coco, breadfruit, growth, DTA Lake Toba
LAJU DEKOMPOSISI SERASAH DAUN Rhizhopora apiculata PADA BERBAGAI TINGKAT SALINITAS DI KAMPUNG NYPA DESA SEI NAGALAWAN KECAMATAN PERBAUNGAN Dilla Ersyahdes Riski; Yunasfi Yunasfi; Hesti Wahyuningsih
Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Mangrove litter has been decomposed contributes organic matter as food source for many organism and also to give fertility in the mangrove ecosystem. The purpose of this research were to measure the decompotion rate and to know the nutrient of carbon (C), nitrogen (N) and phosphorus (P) contained in the leaf litter of R. apiculata at the various levels of salinity. This research was done at Kampung Nypa Desa Sei Nagalawan Perbaungan, North Sumatera Province from August 2015 until January 2016 with used 50 grams of leaf litter. This research for decomposition rate of R. apiculata used Olson method. Nutrient analysis of carbon was conducted using Walkey & Black method, analysis of nitrogen and phosphorus nutrients was conducted using the extraction of wet destruction. The results showed the fastest weight loss and the rate of decomposition of  R. apiculata leaf litter was at 0-10 ppt. The highest of levels of carbon nutrients was in 10-20 ppt, the highest of levels nitrogen and phosphorus nutrients was at 0-10 ppt Keywords: Decomposition rate, nutrient, leaf litter, R. apiculata, salinity.
RESPON TANAMAN SUKUN (Arthocarpus communiis Forst) TERHADAP PENGGUNAAN PELEPAH PISANG SEBAGAI MULSA ORGANIK PADA DTA DANAU TOBA, DESA PAROPO, KECAMATAN SILAHI SABUNGAN Oscar Pardosi; 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

Lake Toba has indicated the existence of illegal logging in the area of Lake Toba and lowering the absorption capacity of rain forest. To support the growth of breadfruit, added water-retaining such as mulch. The mulch which use in this observation is Bananas frond mulch. This study aimed to look at the response of seedling growth breadfruit (Arthocarpus communiis Forst) on the provision of additional materials especially the bananas frond mulch to the growing media in the form of water-retaining materials. This study was conducted in November 2015-January 2016. The study was conducted at the watershed of Lake Toba,  the village Paropo, District Silahi Sabungan, Dairi. The result showed that there were interaction percentage of bananas mulching on the parameters observed. Percentage bananas mulch has significantly effect to the increase hight, number of leaves, and crown area. But did not has significantly effect to leaf area, and diameter. Keywords : Watershed of Lake Toba, Breadfruit (Arthocarpus communiis Forst), Bananas Frond Mulch, Retaining Water.
Uji Infeksi Cylindrocladium sp Pada Tiga Klon Hibrid Turunan Eucalyptus grandis x Eucalyptus urophylla di PT. Toba Pulp Lestari, Tbk Porsea R.R. Malau; R. Rambey; E.B.M Siregar
Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

One disease that attacks the seeds of eucalypts is Cylindrocladium. Cylindrocladium foliar disease-causing spot and foliar blight. PT Toba Pulp Lestari developed many types of clones by vegetative means. This research aimed to characterize the symptoms of the disease leaves, measuring the level of intensity of the attacks, spacious attacks and reactions of plants (resistance) against infection Cylindrocladium sp on three clones of Eucalyptus hybrid. Clones test in the IND 68, IND 70, IND 73. Inoculation was done by spraying. Each plant was sprayed as many as 10 ml of inoculant to the entire leaf surface evenly with spore density of 3.44 x spores/cc. Observation of symptoms is done every day since the inoculation held. The results showed the same symptoms. Symptoms begin with yellowish spots and will widen (necrotic) and continues in death of leaf tissue. The intensity of the attacks on three clones tested showed no real effect from the third until the sixth observation after the inoculation. The test results also showed that all the clones are infected 100%. Key words : Eucalyptus sp, Cylindrocladium sp, Infection Test, Resistant
POTENSI TUMBUHAN OBAT DI CAGAR ALAM DOLOK SAUT, DESA PANSUR NATOLU, KECAMATAM PANGARIBUAN, KABUPATEN TAPANULI UTARA Marjuki Sihombing; Irawati Azhar; Yunus Afifuddin
Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Dolok Saut Preserve as a part of protected forest has many forest products potency, especially medical plants. However, data of medical plants that grow in the preserve had not been documented, so that need to be done of research to analyze the biodiversity and potential of medical plants in Dolok Saut Preserve. The purpose of the research was to know the potential and biodiversity of medical plants in Dolok Saut Preserve. The research had been done in November 2015 to December 2015. The method that used is purposive sampling plots with 20x20 meter square width. The species and the quantity of medical plants that found at preserve was identified.The result of medical plants biodiversity showed 12 species of medical plants. The biodiversity of medical plants in Dolok Saut Preserve at undergrowth stafe was 2,07, seedling stage was 0,23, saplings stage was 0,43, poles stage was 0,38, and trees stage was 0,58. Keywords : biodiversity, Dolok Saut Preserve, medical plants
POTENSI TUMBUHAN BERACUN SEBAGAI BAHAN BIOPESTISIDA DI CAGAR ALAM DOLOK SAUT Fransiscus Sihombing; Irawati Azhar; Yunus Afifuddin
Peronema Forestry Science Journal Vol 5, No 3 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The very high use of chemical pesticides in the agricultural sector is more alarming nowadays. The negative impact of chemical pesticides are health problems in humans and damage to the environment, so it is necessary to find the alternative to overcome this problem. An alternative is by using biopesticides which utilizing poisonous plants that exist in nature. The research is conducted in the Cagar Alam Dolok Saut, Desa Pansur Natolu, Kecamatan Pangaribuan, Kabupaten Tapanuli Utara by using purposive sampling method and shaped transect sample plots, with a total of 98 plots. The purpose of this research is to identify the potential poisonous plants as a biopesticide in conservation area of Dolok Saut. There are 3 aspects of assessment that have been done; local knowledge aspect, diversity aspect and phytochemical aspect. Result shows that there are 9 types of poisonous plants that have been found: Apus Tutung (Clidemia hirta), Modang lalisiak (Ficus sinuata Thunb), Sitanggis (Belamcanda sp.) Dong-dong (Laportea stimulant Gaud) Antaladan (Xanthosoma sp.) Birah (Alocasia arifolia), Tahul-tahul (Nepenthes mirabilis), Bedi-bedi (Callicarpa dichotoma) and Langge (Homalomena javanica). All of samples are identified as having a potential to be used as biopestisida ingredients because they contain secondary metabolites alkoloid, saponins, tannins terpenes and flavonoids.
KEANEKARAGAMAN JENIS TUMBUHAN OBAT DI HUTAN KEMASYARAKATAN KESATUAN PENGELOLAAN HUTAN UNIT XIV TOBA SAMOSIR Julita Dewi Pratidini Limbong; Rahmawaty Rahmawaty; Yunus Afifuddin
Peronema Forestry Science Journal Vol 5, No 4 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Medicinal plant is one of non-timber forest products whose parts can be used for medicine.This study analyzed the diversity of medicinal plants species in Community Forest (Hutan Kemasyarakatan) at Toba Samosir Forest Management Unit (KPH  Unit XIV Toba Samosir). This study was conducted in February to May 2015 in Ajibata Sub-District, Toba Samosir District.  Surveys (systematic random sampling with random start method) were conducted within the Community Forest.  Senduduk buluh (Clidemia hirta) was the most abundant species which were found  (12.09%) followed by putri malu (Mimosa pudica) (0.08%) and jahe (Zingiber officinale) (0.07%) of the total of medicinal plants in Community Forest. Species diversity in the community forest could be classified as high. therefore, the preservation of medicinal plant species in this community forests need to be maintained and enhanced for the benefit of community.Keywords: Community forest, Forest Management Unit, medicinal plant , Toba Samosi
Pengaruh Struktur dan Komposisi Tegakan Terhadap Cadangan Karbon Tumbuhan Bawah di Hutan Desa Simorangkir Julu, Kabupaten Tapanuli Utara Indra Alexander Saragih; Muhdi Muhdi; Kansih Sri Hartini
Peronema Forestry Science Journal Vol 5, No 4 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The utilization of forest which not offset by maintenance and care efforts will lead to the destruction of forests so that increase carbon levels in atmosphere. All components of the vegetation either trees, shrubs, lianas and epiphytes, groundcovers are carbon sink. However, the growth of groundcover very strongly influenced by the structure and composition of stands. Measurements of carbon groundcover in this village forest needs to determine the value of the importance of forests to be carbon sink as part of efforts to mitigate climate change in the North Tapanuli District. The purpose of this research was to analyze stand structure and composition and calculate groundcover carbon stocks in forest of Simorangkir Julu Village. Object of this research is the stand and groundcover in the forest of Simorangkir Julu Village. The method used is analysis of vegetation  at the stands and groundcovers. Destructive sampling method were used to harvest groundcover in 2 m x 2 m sample plots for carbon analyze. Then, followed by analysis of effect the structure and composition stands to groundcover carbon.  The results of this research indicate that there were 26 species of groundcover. Carbon stock of groundcover in salagundi stand is 4.93 tonnes/ ha, and in pine stand 4.88 tonnes/ ha. Based on  statistical analysis of carbon stocks groundcover in pine stands and Salagundi stands not significantly different. Carbon  stocks  are  more   influenced  by  the  diversity  and  density of groundcover, soil type, and environmental condition.Keywords: species, groundcover, stand, carbon

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