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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
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UJI INFEKSI Cylindrocladium sp. PADA KLON HIBRID Eucalyptus grandis x Eucalyptus urophylla (INFECTION TEST Cylindrocladium sp. ON HYBRID CLONES OF Eucalyptus grandis x Eucalyptus urophylla) Junita Herawati Hutasuhut; Nelly Anna; Edy Batara Mulya Siregar
Peronema Forestry Science Journal Vol 4, No 3 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Eucalyptus leaf sp. is a fast-growing plant species as raw material pulp industry at large.  At the time of this plant breeding susceptible to deases. One is a deseases caused by a fungal leaf Cylindrocladium sp. The objectives of this research aims to characterize the symptoms of foliar diseases and measure the intensity and widespread attacks caused by Cylindrocladium sp. the clone IND 47, IND 61 and IND 66. Infection done bye spraying inoculants fungi in this experiment used three clone of plant E. grandis x E. urophylla age of two month from the observation of the symptoms of the diseases symptoms appear, calculated intensity and widespread attacks. The results showed symptoms on leaves caused by infection Cylindrocladium sp. the three clones have the same symptoms are red spots on the leaf surface and then develop into red-brown spots. In measuring the intensity of the attacks and extensive third attack resisten clones are clones Keywords: Cylindrocladium sp., Hybrid Clones of Eucalyptus, Infection Test
Uji Infeksi Cylindrocladium sp pada Tiga Klon Hibrid Eucalyptus grandis x eucalyptus pellita Ervan F. Hutajulu; Nelly Anna; Edy Batara Mulya Siregar
Peronema Forestry Science Journal Vol 4, No 3 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

One of the diseases that attack in the Eucalyptus nursery is Cylindrocladium causing Cylindrocladium foliar spots and foliar blight disease. Cylindrocladium found in eucalyptus nurseries PT Toba Pulp Lestari . According Sembiring (2008) research, Cylindrocladium fungal virulence is the highest of the pathogen found in nurseries . This study aimed to characterize the symptoms of foliar diseases caused by Cylindrocladium on the derived crosses hybrid clones of the type of Eucalyptus, Eucalyptus grandis x Eucalyptus pellita and measure the level of the intensity of the attack, the extent of the attack, as well as the reaction of plants (resistance) of the hybrid clones of Eucalyptus grandis x E. pellita. Infection is done by spraying inoculants fungi on leaves of three clones seedling of E. grandis x E. pellita age of two months, Clone IND 32, Clone IND 33 and Clone IND 45. The symptoms of infection that appearon leaves then reisolated by the method of Koch's postulates. Symptoms caused by infection Cylindrocladium on E. grandis x E. pellita leaves is blight disease. Symptoms begin with yellowish brown spots and will be widened (necrotic) then continue in severe leaf tissue death. The  incubation period for infection of Cylindrocladium faster seen in clone IND 45, but the pace of progress has been slow. In clone IND 32 and IND 33 the incubation period of infection longer appear, but the pace of progress are most intense. Cylindrocladium infection does not affect the growth (resistance) of E. grandis x E. pellita seed age of two months. Key Words: Eucalyptus sp, Cylindrocladium sp, Infection Test, Leave Blight Disease
UJI INFEKSI Phaeophleospora spp. PADA KLON HIBRID Eucalyptus grandis x Eucalyptus urophylla Paulus Stefan S. N; Nelly Anna; Edy Batara Mulya Siregar
Peronema Forestry Science Journal Vol 4, No 3 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Eucalyptus is a species that widely used in pulping industry. Phaeophleospora is one of the pathogens that attack the leaves of young Eucalyptus plant. The purposes of this research were to characterize the leaf disease symptoms and to measure disease severity and disease incidence caused by Phaeophleospora spp. on two-month-old IND 47, IND 61, dan IND 66 Eucalyptus grandis x Eucalyptus urophylla hybrid clones. Inoculation was implemented with spray method. The leaves symptoms caused by Phaeophleospora showed the same symptoms on clones IND 47, IND 61, and IND 66. The early symptoms were the yellow dots on the upperside of the leaves and then developed into spots. The advanced symptoms were reddish spots on the upperside of the leaves and black spores on the underside of the leaves. Three clones were classified as resistant in disease severity measurement, meanwhile in disease incidence measurement, three clones were classified as moderately resistant. Keywords : Phaeophleospora, infection test, symptoms, resistant
Pengaruh Konsentrasi dan Frekuensi Aplikasi Pupuk Daun Cair Terhadap Pertumbuhan Bibit Aquilaria malaccencis Lamk. Sri Wulandari; Nelly Anna; Edy Batara Mulya Siregar
Peronema Forestry Science Journal Vol 4, No 3 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Fertilizationis a means or method used for fertilizer through the leaves and plant part slain.The purpose of this study was to determine the frequency of fertilization and foliar fertilizer concentration is best for seedling growth aloes (A. malaccensisLamk.). The samples used were aloe plant seeds that have been aged 3 months were taken from CV. Earth Partners II, Land of a Thousand Village, city Binjai, North Sumatra. Nursery heldon the 4th floor of buildings Forestry Faculty of Agriculture, University of North Sumatra, which was conducted in November-January2013. The results showed that the frequency of the treatment of liquid foliar fertilizer application significantly affected the height and number of leaves.Treatment of liquid foliar fertilizer concentration significantly affected the number of leaves.The interaction frequency and concentration of liquid foliar fertilizer application significantly affected height and number of leaves.   Keywords: fertilization, agarwood, frequency, concentration
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
PERTUMBUHAN DAN KOMPOSISI RANTAI PANJANG POLYISOPRENOID PADA MANGROVE Avicennia marina (Forsk). DI BAWAH CEKAMAN SALINITAS Hamsyah Rianda Harahap; Mohammad Basyuni; Lollie AP Putri
Peronema Forestry Science Journal Vol 4, No 3 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Mangrove plants have ability to remove excess of salt and contain secondary metabolite to adapt to wide salinity. The purpose of this study was to determine the best salinity level for growth of A. marina seedlings and to evaluate the effect on long-chain polyisoprenoid composition. A. marina seed was used with 5 treatments,-i.e 0%, 0.5%, 1.5%, 2%, and 3% grown for 3 months. Results showed that the optimum growth characterized by height, number of leaves, wet weight of root, wet weight of shoot, dry weight of root, dry weight of shoot, and ratio of shoot to root of A. marina seedlings in 2% concentration. The optimum of diameter was in 0% salinity. Polyisoprenoid showed that A. marina seedlings in 3% salinity was higher content than control. Key Words               : Mangrove, Avicennia marina, Salt Salinity, Polyisoprenoid, Secondary Metabolite.
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.
PENGARUH INTENSITAS CAHAYA TERHADAP PERTUMBUHAN DAN KONTEN RANTAI PANJANG POLYISOPRENOID PADA MANGROVE SEJATI MAYOR BERJENIS SEKRESI Sonneratia caseolaris (L.) Epifani Natalia Gultom; Mohammad Basyuni; Budi Utomo
Peronema Forestry Science Journal Vol 4, No 3 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Each plant species has a different response to the light intensity. Some species need shade in the early growth, and there are species did not require shade in the early growth. Mangrove degradation have been occurred for recent years, rehabilition program  therefore are needed for reforestation. The reforestation needs a superior and qualified seeds for the best growth. This study focus on S. caseolaris because this fruit species priority consumed by local people in the area of mangrove and for rehabilitation program. The applied research method is Complete Random Sampling, non factorial that consist of  different repetition. The applied analysis method is variance analysis with advanced tesdt by determining the value that influence or not with Dunnet method on confidential level 5% with 4 treatments for light intensity 100%, 75%, 50% and 25%. This research was conducted at Pharmacy Laboratory and Faculty of Agriculture, Department of Forestry of University of Sumatera Utara since July of 2014 to January of  2015. The results of research indicates that the light intensity 50% showed best growth of morphology and polyisoprenoid content is not found in S. caseolaris  because the dried weight is not sufficient for further analysis. Keywords : Light Intensity, Morphology, S. caseolaris
RESPONS CEKAMAN GARAM TERHADAP PERTUMBUHAN DAN KONSENTRASI RANTAI PANJANG POLYISOPRENOID PADA MANGROVE Sonneratia alba Smith. Latifah Nur Siregar; Mohammad Basyuni; Lollie AP Putri
Peronema Forestry Science Journal Vol 4, No 3 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (665.578 KB)

Abstract

Mangrove is one of the richest bioactive source naturally and is able to remove excess of salt. The purpose of this study was to determine optimum salinity concentration for growth of S. alba seedlings and to evaluate effect of salinity on polyisoprenoid composition. S. alba seedlings were used  with 5 treatments namely 0%, 0,5%, 1,5%, 2%, and 3%  grown for 3 months. Results showed that optimum growth for S. alba seedlings characterized by height, diameter, and dry weight of root in 1,5% salinity, the best number of leaves and moisture content of root were  in 0,5% salinity. On the other hand,  dry weight of shoot, moisture content of shoot, and ratio of shoot to root were found in 3% salinity, respectively. Analysis of Polyisoprenoid in S. alba seedlings in 3% salinity was higher concentration than 0% treatment. Key words : mangrove, Sonneratia alba, salinity, polyisoprenoid
PEMANFAATAN FUNGI Aspergillus flavus, Aspergillus terreus, DAN Trichoderma harzianum UNTUK MENINGKATKAN PERTUMBUHAN BIBIT Ceriops tagal Devita Mala Sari; Yunasfi Yunasfi; Budi Utomo
Peronema Forestry Science Journal Vol 4, No 3 (2015): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

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Abstract

Deteriorating of mangrove cause many impacts it deteriorate happen because too many land clearing activities in mangrove for harber, public building, and fishponds. Dergadation of mangrove should immediately resolved, one of them is with rehabilitation in mangrove areas use fungi which are expected to increase growth of plants and can be survive. The research was conducted from June 2014 until January 2015 using Completely Randomized design (CRD). There are 3 types of fungi treatment with five replications. Fungi that use are  A.flavus, A.terreus, and T.harzianum. Application of T. harzianum gave the best result on seedling growth of Ceriops tagal spesies with an average height is 2.68 cm, a diameter is 0,226 cm, leaf area is 89.89 cm2, and total dry weight is 4.02 g. They are  compared with control seeds and the provision of other fungi.   Keywords: Ceriops tagal, fungi, rehabilitation, seedling.

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