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All Journal Jurnal Silvikultur Tropika (JST) Jurnal Biologi Tropis Jurnal Ilmu-Ilmu Kehutanan
Eti Artiningsih Octaviani
Institut Teknologi Sumatera
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Environmental Science Immunology & microbiology Social Sciences

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Influence of pH, Shaked Medium, and Addition of Sawdust on the Growth of Xylaria sp. Achmad .; Elis Nina Herliyana; Eti Artiningsih Octaviani
Jurnal Silvikultur Tropika Vol. 4 No. 2 (2013): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.4.2.%p

Abstract

Fungi is natural resources that has many potencies to be developed to fill the human’s need. One of useful fungal species is Xylaria sp. as a decomposer which play an important role in the process of returning nutrients in to the soil. This reasearch aims to examine the effect of medium pH, medium movement, and sawdust of Sengon (Falcataria molucana) & Afrika wood (Maesopsis eminii) addition in medium on the growth of Xylaria sp. Each experiment used Completely Randomized Design with 3 replications. The result showed that best Xylaria sp. colony on PDA attained at pH 8; at pH 2 the fungi did not grow. Highest mycelial dry weight of Xylaria sp. in PDB medium with pH treatment was achieved at pH 6. Highest mycelial dry weight of Xylaria sp. in PDB with shaking was achieved at a speed of 100 rpm. The addition of sawdust in MEA medium did not significantly affect the growth of mycelial diameter of Xylaria sp.Key words: africa wood, medium movement, pH, sengon, Xylaria sp
Potency of Biological Agent Trichoderma harzianum and Gliocladium sp. on Pathogenic Fungi Botryodiplodia sp. causes Dieback Disease of Jabon (Anthocephalus cadamba (Roxb.) Miq.) POTENSI Trichoderma harzianum DAN Gliocladium sp. SEBAGAI AGENS HAYATI Eti Artiningsih Octaviani; Achmad .; Elis Nina Herliyana
Jurnal Silvikultur Tropika Vol. 6 No. 1 (2015): Jurnal Silvikultur Tropika
Publisher : Departemen Silvikultur, Fakultas Kehutanan dan Lingkungan, Institut Pertanian Bogor (IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/j-siltrop.6.1.%p

Abstract

Botryodiplodia sp. is causes dieback disease of jabon (Anthocephalus cadamba (Roxb.) Miq). Dieback disease causes a decrease in the quality and economic value of jabon seedlings in the nursery. Research on control of the disease is still rare. Control of the disease is divided into three ways, namely chemical, physical, and biological. One biological control can be biological agents. Biological agents are used in this study is Trichoderma harzianum and Gliocladium sp. on in vitro test. The test results showed that T. harzianum antagonism with the direct method able to inhibit the growth of Botryodiplodia sp. with the average 52.53% and 35.99% respectively on PDA and Czapex Agar, while Gliocladium sp. able to inhibit the growth of Botryodiplodia sp. Average 46.46% and 28.51% respectively on the PDA and Czapex Agar for 7 days of observation. Results of antagonist test with indirect methods showed that the filtrate of T. harzianum and Gliocladium sp. has the ability to inhibit the growth of Botryodiplodia sp. at 13.42% and 10.25% PDB media significantly different from controls. T. harzianum and Gliocladium sp. have ability to inhibit the growth of Botryodiplodia sp. greatly.Key words : Botryodiplodia sp., Gliocladium sp., in vitro test, Trichoderma harzianum
Vegetation Analysis and Carbon Stock Estimation of Mangrove Island on Mangrove Ecotourism in Gebang Village, Lampung Eti Artiningsih Octaviani
JURNAL ILMU-ILMU KEHUTANAN Vol 6, No 2 (2022)
Publisher : Fakultas Pertanian, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jiik.6.2.22-29

Abstract

Mangrove forests have an important role in reducing the effects of global warming. This study aims to analyze vegetation and estimate carbon stock in mangrove stands in the Mangrove Island of Petengoran Mangrove Ecotourism Area, Gebang Village, Lampung. The forest vegetation analysis method used is the plotted path method. Paths and plots were taken systematically with tree observation plots made measuring 20 m x 20 m. Carbon estimation was carried out by non-destructive sampling method using the allometric formula for Rhizophora apiculata log BBA= -1.315 + 2.614 log D. The results showed that the mangrove island zone was dominated by Rhizophora apiculata vegetation with a density of 325 ind/Ha. The research location has a silty clay loam soil texture with a temperature range of 25°C-32°C which is very suitable for the vegetation of R. apiculata. The estimated carbon stored in the vegetation was obtained from 46% of the standing biomass of R. apiculata, which was 86,283 tons C/Ha.KEYWORDSBiomass, Carbon, Mangroves, Petengoran, Vegetation
Effectiveness of Growing Media on the Growth of Stem Cuttings of Ficus benjamina in Ketapang, West Kalimantan Eti Artiningsih Octaviani; Oktarina Maulidia; Muhammad Reza; Vilda Puji Dini Anita; Robithotul Huda; Septian Faris Al-Amin
Jurnal Biologi Tropis Vol. 26 No. 2 (2026): April - Juni
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i2.11979

Abstract

Peat swamp forests in Indonesia face significant pressure due to ecosystem degradation. One example is in Ketapang Regency, West Kalimantan. Restoration efforts are needed to restore ecosystem function,  including revegetation with Ficus benjamina, which is adaptive to peatland conditions. The  restoration success rate is expected to improve with the use of. This study aimed to evaluate the effectiveness of different growing media on the growth performance of F. benjamina stem cuttings. This study used a completely randomized design (CRD) with 5 planting media treatments (P0–P4) and 8 replications. Parameters included plant height, stem diameter, number of leaves, and changes in soil chemical properties (pH and organic carbon), with supporting data of temperature, humidity, and rainfall as environmental factors. The results showed that planting media treatments significantly affected the vegetative growth of F. benjamina. Treatment P4 (peat + rice husk charcoal + compost) produced the best growth with an average height of 14.60 cm, stem diameter of 2.33 mm, and number of leaves of 8, compared to the control (P0) with a height of 11.25 cm, diameter of 1.11 mm, and 6 leaves. Furthermore, soil pH increased from acidic (4.6–5.0) to neutral (6.5–6.7). These results indicate that  combining planting media with organic matter effectively improves soil chemical properties and supports the growth of F.benjamina, thus offering potential for application in peatland restoration.
Co-Authors Achmad . Achmad . Elis Nina Herliyana Muhammad Reza Oktarina Maulidia Robithotul Huda Septian Faris Al-Amin Vilda Puji Dini Anita