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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 32 Documents
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Search results for , issue "Vol 4, No 4 (2015): Peronema Forestry Science Journal" : 32 Documents clear
Tingkat Kesukaan Konsumen Terhadap Teh Gaharu (Aquilaria malaccensis Lamk.) Berdasarkan Bentuk dan Ukuran serta Kandungan Antioksidan Jhonny Simatupang; Ridwanti Batubara; Elisa Julianti
Peronema Forestry Science Journal Vol 4, No 4 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Agarwood (Aquilaria malaccensis Lamk.) are now popular to be exploited by farmers as a healthy drink. This research was done to study the effect of the shape and size of the tea from agarwood leaves on the consumers acceptance and antioxidant content. Agarwood leaves tea made in three forms: whole leave, cutted and fine particle size. Agarwood tea from these three size of shape and size then were evaluated of their hedonic level at 0 day and after 2 months of storaged in room temperatur by 50 panelists. The antioxidant activity was evaluated on methanol extracts from the three kinds ofagarwood leaves tea by using DPPH method after 2 month of storage. The result of the research shows that the froporcle of agarwood leave tea was more liked by panelists followed by the cutted leaves tea and the whole leaves tea had the lowest value of the hedonic score. The same result was found on the agarwood leaves tea that had been storage for 2 months, in the term of aroma, color for aswell as taste. The hedonic score of arom, color and taste of agarwood leaves tea after 2 months of storage till more than 3,00. It showed that the agarwood leaves tea still was accepted by panelists. The result of antioxidant activity evaluation showed that the fine particle size of agarwood leaves tea had the highest antioxidant activity. The value of IC50 of the agarwood leaves tea from the whole, cutted an fine size leaves were 85,89; 150,01; and 73,02 ppm respectively. Keywords: Agarwood leaves, organoleptic, antioxidant activity, tea
NILAI KESUKAAN KONSUMEN TERHADAP TEH DAUN GAHARU (Aquilaria malaccensis Lamk) BERDASARKAN LETAK DAUN PADA BATANG Nora Adriana; Ridwanti Batubara; Elisa Julianti
Peronema Forestry Science Journal Vol 4, No 4 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Agarwood is a product of non-timber forest product are high value and are exported to foreign countries. Utilization of wood still focused on the use of agarwood tress, sap and skin is more often used as a distinctive aroma produced. Therefore, it is necessary to study on the effect of the aloe plant leaf leaves of that aloes. The purpose of this study is to determine the level of preference for the public to tea agarwood (A. malaccensis Lamk) based on the location of the leaves on the stem. The result showed that the level of public preference for tea agarwood (A. malaccensis Lamk) are on a scale of 3-4 is enough like to like. Consumers prefer tea from the leaves of the aloes are in the middle position on the aloe tree.   Keyword : agarwood leaves, agarwood tea leaves, the level preference.
KETAHANAN PAPAN PARTIKEL TIGA LAPIS TERHADAP SERANGAN RAYAP TANAH Janrahman Simarmata; Apri Heri Iswanto; Irawati Azhar
Peronema Forestry Science Journal Vol 4, No 4 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The objective of this research was to evaluate the effect of wood species and adhesive type on durability three layers particleboard to subterranean termite attack. The research method using grave yard test on the field. Samples were oven dried before test, furthermore samples were burried for 3 month. After that, samples were washed, cleaned and oven dried.  Furthermore, the measuring of  weight sample to determine of weight loos parameter.The results showed that sengon and mahoni wood combination able to reduce of termite attack level compared with homogenous wood particleboard.  Sengon as surface layer and mahoni as core layer resulted the best durability of board.  The durability of UF adhesive for manufacturing particleboard better than combination UF and MF particleboard. Keywords:  Durability, Subterranean termite, particleboard, UF and MF
PENGARUH BERBAGAI JENIS KOMPOS TERHADAP PERTUMBUHAN BIBIT SUKUN (Artocarpus communis Forst) DI DAERAH TANGKAPAN AIR DANAU TOBA KECAMATAN HARANGGAOL HORISON Suryanto B Sinaga; Budi Utomo; Afifuddin Dalimunthe
Peronema Forestry Science Journal Vol 4, No 4 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

The Catchment Area of Lake Toba experienced considerable environmental damage at this time. Lake Toba community activities that transform forests into agricultural land requiring rehabilitation efforts so that the condition of soil fertility can be restored. One of the efforts is to plant breadfruit because breadfruit has high adaptability, fast growing, does not have a requirement to grow a lot and suitable to grow in the highlands. This study aimed to observed the response of seedling growth breadfruit (Artocarpus communis Forst) for the provision of additional materials to the growing media water-retaining compost. Type of compost that was used there are 4 types of Bernas, Bokashi, Rice Husk, Municipal Solid Waste. This study was conducted in September-November 2014. The study was conducted at Catchment Area of Lake Toba, District Haranggaol, Simalungun. The results showed that the use of different types of compost did not significantly affect the average height increment, diameter, leaf area, crown area, number of leaves and water content. Keywords: Breadfruit, Compost, Bernas, Bokashi, Catchment Area of Lake Toba
PENGARUH VARIASI NAUNGAN TERHADAP PERTUMBUHAN DAN KONSENTRASI RANTAI PANJANG POLYISOPRENOID SEMAI MANGROVE SEJATI MINOR BERJENIS SEKRESI Xylocarpus granatum (Koenig.) Try Miharza; Mohammad Basyuni; Yunasfi Yunasfi
Peronema Forestry Science Journal Vol 4, No 4 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

X. granatum is one of mangrove plants that may exist in extreme environments. This plant contains secondary metabolites for further study. Complete Random Design (CRD) was used with 5 treatment of light intensity (0%, 25%, 50%, 75% and 100%) of X. granatum seedlings. Results showed that 100% shade (0% light intensity) provided the highest growth response, but does not necessarily provided optimum growth response. The total content of polyisoprenoid in 0% shade was of 0,153 ml little bit higher than 75% of 0.144 ml. TLC analysis of the results showed that the concentrations of dolichol in treatment 0% shade was higher in  the root and the leaves of X. granatum seedlings compared to 75% shade treatment . Keywords: Mangrove, Non Saponifiable Lipids ( NSL ), Polyisoprenoid, Xylocarpus granatum.
PEMANFAATAN BERBAGAI JENIS FUNGI UNTUK MENINGKATKAN PERTUMBUHAN Rhizophora apiculataDI DESA NELAYAN INDAH KECAMATAN MEDAN LABUHAN Rachel Nababan; Yunasfi Yunasfi; Mohammad Basyuni
Peronema Forestry Science Journal Vol 4, No 4 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Mangrove rehabilitation is one of effort to save mangrove forest. Utilization of fungi as decomposer support to increase the plantation growth for rehabilitation. Fungi as microorganism may reduct material organic. The research gives information about the fungi  species in which to increase the growth of R. apiculata seedlings and can be used in rehabilitation of mangrove forest. The study was conducted from September 2014 to January 2015 using a completely randomized design (CRD) with treatment application types of fungi and five replications. There are three types of fungi namely A. flavus, A.terreus, T. harzianum, and control.  Utilization of T. harzianum treatment gave the best results of R. apiculata  seedlings, with an average height of 17.00 cm, diameter of  0.69 cm, leaf area of  743.36 cm2, total dry weight of 29.64 g. Compared to the control with average height of  7.36 cm,  0.54 cm of diameter, leaf area of  653.31 cm2, and 27.37 g of total dry weight.Keywords: rehabilitation, fungi, Rhizophoraapiculata, mangrove
SEBARAN SUKUN DAN PERSEPSI MASYARAKAT TERHADAP SUKUN (Artocarpus communis Forst) PADA DAERAH TANGKAPAN AIR DANAU TOBA DI NAGORI PURBA SARIBU KECAMATAN HARANGGAOL HORISON KABUPATEN SIMALUNGUN Jordy M Manurung; Budi Utomo; Afifuddin Dalimunthe
Peronema Forestry Science Journal Vol 4, No 4 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Forests and land in the catchment area of Lake Toba, showed a decrease for  quality and quantity of the land. This study aims to determinethe public perception of breadfruit (Artocarpus communis Forst). Research carried out in the catchment area of Lake Toba, Simalungun. Analysing public perception using a questionnaire. Data from the questionnaire were analyzed by descriptive quantitative.  Perceptionis influencedby factors of age, education, livelihood and long lived. Research shows that there is a breadfruit distribution point in Haranggaol. Public perception of the breadfruit (Artocarpus communis Forst) is good. Where 58.41% of the people know and understand the benefits of breadfruit.Keywords: Breadfruit (Artocarpus communis Forst), Distribution of Breadfruit, Community Perception, Forest, Catchment Area
Dampak Erupsi Gunung Sinabung Terhadap Sifat Kimia Tanah Di Kabupaten Karo Ceriati Magdalena Simanjuntak; Deni Elfiati; Delvian Delvian
Peronema Forestry Science Journal Vol 4, No 4 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

This study aims to determine the impact of the eruption of Mount Sinabung on soil chemical properties in Karo. This study is exploratory in which the comparison between forest land that is not affected by the eruption (control) was taken from the village Kutagugung and forest land affected by the eruption taken from the village Sukanalu. Soil samples exposed to the eruption consisted of two samples that volcanic ash with a depth of 0-5 cm and mixed with volcanic ash soil to a depth of 5- 20 cm, while for the control of soil samples consisted of a sample of the soil to a depth of 0-20 cm. Tests conducted on soil chemical properties BPTP North Sumatra and Central Laboratory of the Faculty of Agriculture, University of North Sumatra. Results showed the soil to a depth of 5-20 cm eruption contains C-Organic, CEC, available P, total P, and S with the criteria of moderate to very high, while the volcanic ash with a depth of 0-5 cm and control soil with a depth of 0 -20 cm contains the C-Organic, CEC, N, available P, total P, K, Ca, Mg and S with the criteria of very low to very high.Keyword: volcanic eruption, Sinabung, soil chemistry, soil depth.
Aktivitas Mikroorganisme Pada Tanah Bekas Erupsi Gunung Sinabung Di Kabupaten Karo Puput Sarah; Deni Elfiati; Delvian Delvian
Peronema Forestry Science Journal Vol 4, No 4 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Volcanic ash released when the eruption has an acidic pH, thus affecting the amount and activity of microorganisms in the soil. Therefore conducted this study to determine the activity of soil microorganisms in the former eruption of Mount Sinabung in Karo. Measurement of total soil microorganisms was done by Agar Cawan method, while the measurement of the activity of soil microorganisms was conducted jar and titrimetic method. The result of the research showed that the higher of the pH, the colony of microorganism will be much and the reverse. The higher of C- organic, the activity of micoorganism will be high within the soil, and the reverse. Respiration value on land affected by volcanic ash at a depth of 0-5 cm was 0,96. Respiration value on land affected by volcanic ash at a depth of 5-20 cm was 1,16. Respiration value on land that was not affected by volcanic ash was 1,52.Keywords: Volcanic ash, soil microorganisms, microorganism activity, soil depth.
Kualitas Laminasi Bambu Betung (Dendrocalamus asper) pada Berbagai Perlakuan Ukuran Sortimen dan Buku Bambu Putri Rafika Wulandari; Luthfi Hakim; Tito Sucipto
Peronema Forestry Science Journal Vol 4, No 4 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Laminated boards made from bamboo betung (Dendrocalamus asper) with the influence of different sizes and the presence of node sortimen. The purpose of this study was to evaluate the physical and mechanical properties of laminated bamboo betung, evaluating the effect of nodes and size sortimen the physical and mechanical properties of laminated bamboo board betung and determine the best size and the existence of the book sortimen bamboo as laminate raw material. Testing the water content, water absorption, delamination and bending strength is based JAS standard SE-7 2003 on Flooring surfaces while bonding strength testing is done based on ISO standard ISO 16981-2012.  The results show the quality of bamboo betung laminate board meets the standards JAS-7-2003 SE for testing moisture content, delamination, but for testing water absorption does not fulfilling. On the mechanical properties of bamboo betung laminated board meets the standards JAS-7-2003 SE for testing bending strength and meets ISO 16981-2012 standards for surface bonding strength testing. The best treatment for laminated boards are laminated boards without involving nodes with a size of 20 cm sortimen.Keyword : Dendrocalamus asper, node, sortimen size, laminated board

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