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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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STRUKTUR PRODUKSI GETAH, PERTUMBUHAN DAN KAJIAN FENOTIPIK KEMENYAN (Styrax sp) Agung Wibowo; Arida Susilowati; Kansih Sri Hartini
Peronema Forestry Science Journal Vol 5, No 4 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1017.615 KB)

Abstract

Kemenyan tree was North Sumatera local species that produce high valuable resin and prospective export comodities. Recently, information about kemenyan resin production, growth structure and phenotypic studies still not determined yet. The objectives of this research were : (1) To determine resin production baseline data, growth structure and growth character related with resin production for further characterization research and (2). To estimate genetic variable of resin production through phenotypic characterization. SPSS and Minitab software were used for determined some variable of research. The result showed that kemenyan stand on Banuaji IV Village has resin production average as much 192,6 g/tree/yield and right-skewness resin production distribution structure. Pearson correlation test and multiple linear regression for 11 growth characters showed 9 characters that correlated with resin production (r: 0.18-0,734) and regression test showed that bark thickness and stem diameter character can be used as indicator for high resin tree selection. The result on phenotypic study showed that resin production character has high narrow sense heritability (h2: 0.55 – 0.60). It indicated that resin production character dominanly influenced by genetic factor. Keywords: kemenyan, resin, production, phenotypic, heritability
Pengaruh Mulsa Organik Anyaman Daun Sawit Dan Interval Penyiraman Terhadap Pertumbuhan Bibit Sukun (Artocarpus communis) Tria Yunita Sinaga; Budi Utomo; Yunus Afifuddin
Peronema Forestry Science Journal Vol 5, No 4 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (877.351 KB)

Abstract

Degradation and deforestation of forest caused reduction vast and quality of forests. One of the solution to overcome this are reforestation and afforestation. Before replanting in the field needed seedlings with a good level of environmental adaptation that is by breeding improved varieties. Breadfruit is a plant that has a strong root system that can be a deterrent intrusion barriers to erosion and sea water. This research aims to get optimum organic mulch density and watering interval to growth of breadfruits. This research has done in green house at Agriculture Faculty of the University of North Sumatera (USU). The method used to analyze the effect of organic mulch woven palm leaf and watering interval to growth of breadfruits for 5 months. The observed parameter is height, diameter, number of leaves, leaves width, canopy width, length of roots, dry weight of  roots and moisture levels of leaves. Analysis data using the factorial complete random design (RALF). This research results showed that organic mulch woven palm leaves and watering interval significantly effect to growth of breadfruits except diameter parameter. Interaction of both aren’t significantly effect for all parameters. Keywords : Green house, breadfruits (Artocarpus communis), mulch.
PENGARUH SALINITAS TERHADAP PERTUMBUHAN DAN PERKEMBANGAN AKAR SEMAI MANGROVE Rhizophora apiculata Blume Desya Alvionita Keliat; Mohammad Basyuni; Budi Utomo
Peronema Forestry Science Journal Vol 5, No 4 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (430.582 KB)

Abstract

Rhizophora apiculata is easy species to be found and widely distributed. The purpose this research is to know the best concentration of salinity for growing seedlings of mangrove as refrence to rehabilitate mangrove forest. Effect of salinity on the growth and root development in mangrove Rhizophora apiculata Blume seedlings at Greenhouse Faculty of Agriculture and Laboratory of Ecology, University of Sumatera Utara from May 2015 until October 2015. Five level concentration of salinity was used namely 0%, 0,5%, 1,5%, 2%, and 3% with ten of repeatation. The research measured the parameters of height seedlings, diameter, leaves thickness, wide of leaves, primary root, lateral root, long of primary root, long of lateral root, diameter of primary root, diameter of lateral root, water content of shoot, water content of root, and shoot ratio. We found that the best growing Rhizophora apiculata seedlings was at 0,5% salinity level.Keywords: Development, Mangrove, Growing, Rhizophora apiculata Blume, Salinity
PENDUGAAN CADANGAN KARBON PADA TEGAKAN EUCALYPTUS IND 47 UMUR 5 TAHUN DI IUPHHK PT.TOBA PULP LESTARI, Tbk. SEKTOR TELE Ansencia Manullang; Muhdi Muhdi; Kansih Sri Hartini
Peronema Forestry Science Journal Vol 5, No 4 (2016): Peronema Forestry Science Journal
Publisher : Program studi Kehutanan USU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1015.726 KB)

Abstract

Forest can reduce levels of carbondioxide (CO2) in the air and store it as organic matter in biomass plants. This research aimed to estimate the potential of biomass and carbon of Eucalyptus IND 47 that was  5 years old at IUPHHK PT. Toba Pulp Lestari, Tbk. Tele Sector. The method used in this study is a destructive method. Implementation of research activities carried out in two stages, namely field data collection and analyze biomass and carbon of the parts of stands in laboratory. Parameter measured in the field is wet weight while the measured parameter in laboratory were moisture content, volatile matter content, ash content, and carbon content. The result showed the best allometric equations for mass content of biomass and carbon in stands of Eucalyptus IND 47  was W = 454.419 – 45.528D + 1.886D2 and C = 220.979 – 23.389D + 1.004D2.. The potential of biomass and carbon stocks in stands of Eucalyptus IND 47  at IUPHHK PT. Toba Pulp Lestari, Tbk. Tele Sector is 243.18 tons/ha  and 118.89 C tons/ha. Keywords : 5 years old of Eucalyptus IND 47, biomass, carbon

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