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All Journal Jurnal Silvikultur Tropika (JST) Jurnal Penelitian Hutan dan Konservasi Alam Jurnal Penelitian Hutan Tanaman Syntax Literate: Jurnal Ilmiah Indonesia Jurnal Maenpo : Jurnal Pendidikan Jasmani Kesehatan dan Rekreasi Edu Sportivo: Indonesian Journal of Physical Education Indonesian Journal of Sport Management Jurnal Pedagogi Olahraga dan Kesehatan Public Health and Safety International Journal (PHASIJ) Engineering and Technology International Journal (EATIJ) AMMA : Jurnal Pengabdian Masyarakat
Cahyo Wibowo
Departemen Silvikultur, Fakultas Kehutanan Institut Pertanian Bogor
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Veterinary Other

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PENGARUH TEKNIK PEMBENIHAN LANGSUNG DAN PENYIANGAN TERHADAP PERTUMBUHAN AWAL MERBAU (Intsia bijuga OK.) Tuheteru, Faisal Danu; Mansur, Irdika; Wibowo, Cahyo
Jurnal Penelitian Hutan dan Konservasi Alam Vol 8, No 3 (2011): Jurnal Penelitian Hutan dan Konservasi Alam
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

ABSTRAKTeknik pembenihan langsung merupakan salah satu metode alternatif untuk mendukung reforestasi dan rehabilitasi hutan dan lahan di daerah tropika. Penelitian ini bertujuan untuk mengetahui pengaruh metode penaburan (pembenaman) benih dan gulma terhadap pertumbuhan tanaman merbau (Intsia bijuga OK.). Penelitian ini dilaksanakan di kebun percobaan Cikabayan Fakultas Pertanian Institut Pertanian Bogor  yang berlangsung mulai bulan November 2008 hingga Februari 2009. Hasil penelitian menunjukkan bahwa metode benih dibenamkan berpengaruh nyata terhadap parameter pertumbuhan tanaman. Metode benih dibenamkan dapat meningkatkan tinggi (28,44 cm), daya berkecambah (95%), laju perkecambahan (12,21 hari), persen jadi benih (89,67%) dan penyerapan unsur hara N dan P dibanding dengan metode benih ditutup mulsa. Metode benih ditutup mulsa dan tidak ada penyiangan menghasilkan berat kering akar yang rendah (0,8 g). 
PENGARUH UMUR SUMBER BAHAN STEK TERHADAP KEBERHASILAN STEK PUCUK MERANTI TEMBAGA (Shorea leprosula MIQ.) Danu Danu; Iskandar Z. Siregar; Cahyo Wibowo; Atok Subiakto
Jurnal Penelitian Hutan Tanaman Vol 7, No 3 (2010): JURNAL PENELITIAN HUTAN TANAMAN
Publisher : Pusat Penelitian dan Pengembangan Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (220.088 KB) | DOI: 10.20886/jpht.2010.7.3.131-139

Abstract

Shorea leprosula Miq. merupakan tanaman dipterokarpa yang tergolong cepat tumbuh, namun benihnya bersifat rekalsitran dengan musim berbuah yang tidak menentu. Perbanyakan vegetatif merupakan salah satu alternatif untuk memperbanyak jenis ini. Umur tanaman menentukan tingkat juvenilitas dan kemampuan bahan stek untuk berakar. Penelitian ini bertujuan untuk mempelajari hubungan umur sumber bahan stek dengan kandungan hara dan auksin bahan stek terhadap keberhasilan perakaran stek S. leprosula. Bahan stek terdiri atas stek pucuk yang dikumpulkan dari pohon induk berumur < 2 tahun, 10 tahun dan 25 tahun. Hasil penelitian menunjukkan bahwa bahan stek dari pohon berumur < 2 tahun memiliki tingkat juvenilitas yang lebih tinggi dibandingkan dengan bahan stek dari tanaman dewasa (> 10 tahun) yang ditunjukkan dengan tingginya persen keberhasilan stek berakar, sejalan dengan tingginya nisbah C/N dan kandungan IAA dalam pucuk. Berdasarkan analisis biplot, kandungan IAA dalam daun dan nisbah C/N batang stek memberikan pengaruh yang lebih kuat terhadap keberhasilan perakaran stek pucuk S. leprosula.
Relationship Transpiration Ability with Growth Dimension of Seedling Acacia decurens Inoculated with Glomus etunicatum and Gigaspora margarita HUBUNGAN KEMAMPUAN TRANSPIRASI DENGAN DIMENSI TUMBUH BIBIT TANAMAN Acacia decurrens TERKOLONISASI Glomus etunica Arif Budi Setiawan; Sri Wilarso Budi R.; Cahyo Wibowo
Jurnal Silvikultur Tropika Vol. 6 No. 2 (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.6.2.%p

Abstract

Transpiration plays very important role in ensuring good plant metabolism. However, techniques/methods used for its assessment are difficult and also quite demanding in terms of resources and technical know-how. Again, the results from transpiration measurements are not applicable to different samples and locations. Therefore it is necessary to study the relationship between transpiration ability with growth dimension of seedlings for predicting transpiration ability by a simple method. The research design was the completely randomized design with mycorrhizae arbuscular inoculants. This study used inoculants from silviculture laboratory identified as Glomus etunicatum (M1) and Gigaspora margarita (M2). Regression model analysis was used to determine the relationship between transpiration ability with growth dimension of Acacia decurrens seedling. There was a positive effect of mycorrhizae symbiosis which increased the transpiration ability with a strong relation for increasing seedling growth dimension. Transpiration ability is superior in G. etunicatum of 0.002863 mol m-2 s-1. The transpiration ability in control and G. etunicatum could be predicted with regression equation of R2 >70%, but in M2 intervention the model could not be predicted it was because of multi-colonization between the independent variable.Key words: Acacia decurrens, Gigaspora margarita, Glomus etunicatum, Regression, Transpiration
KEANEKARAGAMAN MAKROFAUNA TANAH PADA BERBAGAI TIPE TEGAKAN DI AREAL BEKAS TAMBANG SILIKA DI HOLCIM EDUCATIONAL FOREST, SUKABUMI, JAWA BARAT Soil Macrofauna Diversity on Various Types of Stands in Silicas’ Post-Mining Land in Holcim Educational Forest... Cahyo Wibowo; Syamsudin Ahmad Slamet
Jurnal Silvikultur Tropika Vol. 8 No. 1 (2017): 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.8.1.26-34

Abstract

Soil Macrofauna has a very important role in maintaining soil fertility through the decomposition of organic matter, nutrient distribution, increasing soil aeration and so on. The existence of soil macrofauna are very important in helping the process of rehabilitation of post-mining land because they contribute to the improvement of the physical, chemical, and biological properties of soil. The purposes of this study are to identify and quantify the diversity of soil macrofauna in various types of stands and land without stand in Holcim Educational Forest. The highest abundance of soil macrofauna was found in mixed stand with 240 individuals in nine plots of observation, each plot was 40 cm x 40 cm. Layers of soil (0-10 cm) has an abundance of soil macrofauna higher than in the litter layer, because soil layer can provide protection from direct sunlight and enough food for soil macrofauna. Mixed stand has the highest soil macrofauna diversity (H '= 2.52, DMG = 6.93, J' = 0.63), as it has a more diverse vegetation and highest canopy density. Environmental conditions such as soil temperature, canopy density, and soil organic matter can influence the composition and abundance of soil macrofauna, so that the soil macrofauna can be used as an indicator in monitoring environmental quality. Soil macrofauna that dominates in all the stands and land without stand, were red ants (Formicidae 7), termites (Rhinotermitidae 1), earthworms (Megascolecidae 1), and larvae of Coleoptera (Scarabaeidae 1).Key words: abundance, diversity, environment, soil macrofauna
PERANAN ARTHROPODAA DI EKOSISTEM EKOTON DAN KELAPA SAWIT The Role of Arthropodas in Ecotone and Oil Palm Ecosystems Noor Farikhah Haneda; Cahyo Wibowo; Muhammad Hasbi
Jurnal Silvikultur Tropika Vol. 8 No. 2 (2017): 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.8.2.116-122

Abstract

Forest land conversion into oil palm plantation causes drastic ecological changes which influence various species in the ecosystem. Arthropoda, as one of the components of biodiversity, has important roles as herbivore, predator and parasitoid, and detritivore. This research was conducted in village of Runtu, Subdistrict of Arut Selatan, District of Kotawaringin Barat, the province of Central Kalimantan. Techniques of Arthropoda sample collection were pitfall trap, malaise trap, and sweep net conducted in two ecosystems. The two ecosystems were ecotone (transition between forest and oil palm plantation) and oil palm plantation. Research results showed that forest existence could increase the abundance of arthropoda. Abundance of Arthropoda in ecotone ecosystem was higher as compared to that in oil palm plantation. Populations of predator and parasitoid Arthropoda were higher in ecotone ecosystem.Key words: Arthropoda, detritivore, herbivore, oil palm plantation, predator, parasitoid
IDENTIFIKASI KESESUAIAN LAHAN UNTUK JATI (Tectona grandis Linn.f) DI PT. MELAPI TIMBER, KALIMANTAN TIMUR Identify Suitable Land for Jati (Tectona grandis L.f) in PT. Melapi Timber, East Kalimantan Susanti .; Prijanto Pamoengkas; Cahyo Wibowo
Jurnal Silvikultur Tropika Vol. 9 No. 1 (2018): 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.9.1.31-36

Abstract

Land evaluation of a tract of land, for its suitability to be planted with a particular plantation species is an importantstep for species choice in plantation forest. A weight factor matching (WFM) approach of this study, was used to identifysuitable land for jati (Tectona grandis L.f) in PT. Melapi Timber, East Kalimantan. Land suitability is affected by climate,soil and topograph. According to WFM, the results indicated that important variables which limit T. grandis in theresearch area were pH, cation exchange capacity (CEC), potassium (P) and soil depth condition. The study results showthat 4 of 5 land units are marginally suitable (S3) for T. grandis cultivation in PT. Melapi Timber.Key words: Land evaluation, suitability, Tectona grandis L.f., weight factor matching (WFM)
PENGARUH KEBERADAAN AKAR ADVENTIF DAN MEDIA TANAM TERHADAP PERTUMBUHAN STEK CABANG BAMBU BETUNG (Dendrocalamus asper Schult Backer ex Heyne) Influence of Adventitious Roots and Planting Media on Growth of Branch Cutting of Betung Bamboo Yan Eka Prasetyawati; Cahyo Wibowo; Sri Wilarso Budi R.
Jurnal Silvikultur Tropika Vol. 9 No. 2 (2018): 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.9.2.109-115

Abstract

The need of bamboo raw materials, betung bamboo for instance, keeps increasing in line with the rising rate of population growth and science development. Therefore, stands of bamboo clumps with sustainable productivity and quality, are absolutely required. One of betung bamboo’s characteristics is presence of adventitious roots in branches of bamboo culm. The problem is that many of such branches often have dry adventitious roots which are brown in color. Based on such condition, research of the effect of presence of dry adventitious roots, need to be conducted, as well as the effect of growth media, on the growth of bamboo branch cuttings. The research objective is to examine the effect of bamboo branches with dry adventitious roots and planting media on growth of betung bamboo’s branch cuttings. The media used are soil, rice husk charcoal and compost. The experiment which used factorial RAK design showed that planting media significantly affected leaf numbers, whereas adventitious roots had significant effect on all measured parameters, including shoot length, shoot numbers, leaf numbers, oven dry weight of roots, and survival percentage. Media with the highest leaf numbers were mixture of soil and rice husk charcoal.Keywords: adventitious root, Dendrocalamus asper, planting media, branch cutting
Komposisi Jenis Tumbuhan Bawah dan Sifat Tanah di Lahan Bekas Tambang Kapur dan Silika PT Holcim Indonesia Tbk Cahyo Wibowo; Dadan Mulyana; Wiwi Wildasari
Jurnal Silvikultur Tropika Vol. 11 No. 2 (2020): 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.11.2.82-88

Abstract

Mining activities were carried out, causing damage on soils, increased rates of erosion, decline in productivity and stability of the land. The revegetation process takes a long time, so it needs to plant cover crop plants. The goal of planting cover crop is to protect the soil from erosion . This research aims to study the composition of understory vegetation, and its potential to function as cover crops on soil which contain lime and silica in PT Holcim Indonesia Tbk. Undergrowth vegetation which was dominant in the ex- mining land of silica and lime were Imperata cylindrica and Eleusine indica soil properties in both locations were categorized as not fertile. Key words: cover crop, diversity of species, mining, soil properties, understorey
Keefektifan Pelaksanaan Pembelajaran Pendidikan Jasmani Olahraga dan Kesehatan Selama Masa Pandemi Covid-19 Di SMA Kristen 1 Salatiga Kinasih, Angkit; Wibowo, Cahyo; Telaumbanua, Observasi S. J
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : CV. Ridwan Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (327.438 KB) | DOI: 10.36418/syntax-literate.v6i11.4596

Abstract

Corona Virus telah banyak mengubah tatanan kehidupan masyarakat di dunia termasuk Indonesia, perubahan terjadi secara tiba-tiba dalam berbagai aspek kehidupan masyarakat dan sekaligus memberi dampak yang sangat besar pada semua bidang, salah satunya adalah bidang Pendidikan. Pendidikan di Indonesia terhambat tidak berjalan secara normal sebagaimana biasanya, sehingga mengharuskan sistem pelaksanaan pembelajaran di sekolah dari tatap muka menjadi jarak jauh (online). Penelitian ini bertujuan untuk mengetahui dan menganalisis keefektifan pelaksanaan pembelajaran daring pada pembelajaran PJOK yang telah dilaksanakan di SMA Kristen 1 Salatiga selama pandemi Covid-19. Penelitian ini merupakan penelitian kuantitatif berupa pendekatan deskriptif. Jenis data yang digunakan dalam penelitian ini adalah data primer dan teknik pengumpulan data menggunakan kuesioner online. Populasi dalam penelitian ini adalah sebanyak 180 peserta didik kelas (X) SMA Kristen 1 Salatiga. Dan jumlah sampel dalam penelitian ini sebanyak 37 peserta didik di SMA Kristen 1 Salatiga. Adapun hasil analisis yang diperoleh dalam penelitian ini bahwa pelaksanaan pembelajaran PJOK di SMA Kristen 1 Salatiga selama masa pandemik Covid-19 dapat berjalan efektif. Hal ini dapat dilihat dari hasil analisis deskriptif yang menunjukkan nilai rata sebesar 29,76 responden menjawab “ya”. Skor rata-rata tersebut jauh lebih besar dari para responden yang menjawab tidak dengan skor rata-rata hanya 7,24
Analisa kerja katup API 6A dan Pengembangan Metode Perbaikan Dibengkel Perbaikan CV.PUTRA TEKNIK SEJAHTERA Beatriksan, Yulianus; Purba, Dolok; Wibowo, Cahyo
Engineering and Technology International Journal Vol 5 No 02 (2023): Engineering and Technology International Journal (EATIJ)
Publisher : YCMM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55642/eatij.v5i02.350

Abstract

Penelitian ini membahas strategi perawatan dan perbaikan katup API 6A yang digunakan dalam bengkel perbaikan katup. Studi kasus dilakukan pada sebuah bengkel yang secara rutin melakukan perawatan dan perbaikan katup API 6A. Metode penelitian mencakup inspeksi visual dan pengujian fungsional untuk mengidentifikasi masalah dan membuat rekomendasi perawatan dan perbaikan guna menjaga kinerja dan keamanan katup. Hasil inspeksi visual dan pengujian fungsional katup dari berbagai sumber, termasuk industri minyak dan gas, diolah dan dianalisis. Berdasarkan temuan, disusunlah rekomendasi perawatan dan perbaikan yang sesuai dengan kondisi masing-masing katup. Rekomendasi ini mencakup tindakan perbaikan yang efisien dan memperhatikan aspek kinerja serta keamanan katup. Dengan menerapkan strategi perawatan dan perbaikan yang tepat, diharapkan masa pakai katup dapat ditingkatkan, risiko kegagalan dapat diminimalkan, dan waktu henti peralatan dapat dikurangi, sehingga efisiensi produksi dapat terjaga.
Co-Authors Adri Maldi Subardjah Angkit Kinasih Antoni, Muhammad Sigit Arif Budi Setiawan Arum Sekar Wulandari Atok Subiakto Beatriksan, Yulianus Budi Triyono Dadan Mulyana Danu Danu Dennys Christovel Dese Dewadi, Fathan Faisal Danu Tuheteru Fathan Mubina Dewadi Fauziah, Nadira Aribah Hulu, Alwin Praiman Ipa Sari Kardi Ira Maisarah Irdika Mansur Iskandar Z. Siregar Jumari Kukuh Pambuka Putra Maulana, Jon Mubina Dewadi, Fathan Muhammad Hasbi Munir Fahmi, Mokhamad Muryanto Muryanto, Muryanto Muryanto, M Noor Farikhah Haneda Nopiyanto, yahya eko Panalili T, Ojakma Sihar Prijanto Pamoengkas Pujianto, Dian Purba, Dolok Setiawan, Apri setiawan, Dibyo Siahaan, Herbert Hasudungan Sri Wilarso Budi R Suhara, Ade Sunaryo, Sulistianto Susanti . Syamsudin Ahmad Slamet Telaumbanua, Observasi S. J Tumanggor, Ojakma Sihar Panaili Wiwi Wildasari Yan Eka Prasetyawati