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All Journal DIDAKTIKA: Jurnal Pendidikan Sekolah Dasar Journal of Degraded and Mining Lands Management Jurnal Fisika Unand Jurnal Belantara Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Journal of Physics and Its Applications JMIE (Journal of Madrasah Ibtidaiyah Education) Jurnal Teknik Menara Perkebunan Journal of Sylva Indonesiana Jurnal Review Pendidikan Dasar : Jurnal Kajian Pendidikan dan Hasil Penelitian Jurnal Syntax Imperatif : Jurnal Ilmu Sosial dan Pendidikan IJPD (International Journal Of Public Devotion) Jurnal Sylva Lestari Busyro : Jurnal Dakwah dan Komunikasi Islam International Journal of Learning Reformation in Elementary Education Journal of People, Forest And Environment
Hendra Prasetia
Yogyakarta State University
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Other

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DIVERSITY OF AMPHIBIANS IN TROPICAL PEATLAND ECOSYSTEM: CASE IN BUFFER VILLAGE AROUND CONSERVATION AREA Iswandaru, Dian; Hasballah, Bayu Ginanjar; Wulandari, Christine; N., Novriyanti; Pangestu, Pandu Galang; Prasetia, Hendra
Jurnal Belantara Vol 8 No 1 (2025)
Publisher : Forestry Study Program University Of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbl.v8i1.1112

Abstract

Peatlands are vulnerable to fire, causing ecological damage that threatens biodiversity, one of which is amphibians. The nature of amphibians which are sensitive to environmental changes can be used as a bioindicator of the quality of a disturbed environment, including in buffer villages around conservation areas. This research aims to analyze the diversity of amphibians and their relationship with temperature and air humidity. The method used is Visual Encounter Survey (VES) in two types of habitats, namely oil palm plantations and swamps. Data analysis used the Shannon-Wiener species diversity index, the Pielou species evenness index, and the Pearson correlation test. The research results found 6 species of amphibians, namely Hylarana erythraea, Hylarana nicobariensis, Fejervarya limnocharis, Fejervarya cancrivora, Duttaphrynus melanustictus, and Hylarana baramica. The diversity index (H') in oil palm plantations and swamps is H'=1.46 and H'=1.10 in the medium category. This shows that ecologically, the conditions of the habitat types of oil palm plantations and swamps in the buffer villages around the Orang Kayo Hitam Forest Park after land burning can support amphibian life. Key words: Amphibians, conservation area, diversity, tropical peatland.
Field Evaluation of Biochar Application on the Early Growth of Falcataria moluccana: Effects of Pyrolysis Temperatures and Biochar Application Rates Wijaya, Bangun Adi; Riniarti, Melya; Hidayat, Wahyu; Prasetia, Hendra; Yoo, Jiho; Park, Byung Bae
Jurnal Sylva Lestari Vol. 13 No. 1 (2025): January
Publisher : Department of Forestry, Faculty of Agriculture, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl.v13i1.1134

Abstract

Faltacaria moluccana at its early plantation, is devastated by heat and water stress due to current global climate change. Production forests in Indonesia suggested to use biochar to enhance the durability of early growth F. moluccana in the field. Empty fruit bunches (EFB), a gigantic abundant waste material in Indonesia, pose its potential as biochar feedstock. This study aims to evaluate the effects of EFB biochar on the growth of F. moluccana for one year in a field setting. The experiment used two biochar application rates (25 and 50 tons/ha) and biochar produced at two pyrolysis temperatures (400°C and 600°C). Climatic factors (rainfall and average temperature) were monitored to assess how biochar interacted with field conditions to influence the growth of F. moluccana. EFB biochar increased height and diameter increment by up to 25% and 42%, respectively, compared to control after one year. While pyrolysis temperatures show no impact on growth, biochar application rates of 25 and 50 tons/ha significantly boost diameter increments by 36% and 42%, respectively, compared to controls, without affecting height. Biochar also improves monthly growth increments under water and heat stress. EFB biochar optimizes growth under current climate conditions in Indonesia and mitigates the negative effects of extreme temperature fluctuations. Keywords: biochar, early plant growth, empty fruit bunch, Faltacaria moluccana, field experiment
The influence of pyrolysis temperature and dosage of shorea wood biochar produced on soil properties and sengon (Falcataria moluccana) seedling biomass Riniarti, Melya; Hidayat, Wahyu; Prasetia, Hendra; Wijaya, Bangun Adi
Menara Perkebunan Vol. 93 No. 1 (2025): 93(1), 2025
Publisher : INDONESIAN OIL PALM RESEARCH INSTITUTE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iribb.jur.mp.v93i1.611

Abstract

This study explores the effects of pyrolysis temperature of shorea wood biochar and its doses on the soil properties and biomass of Falcataria moluccana seedlings. The focus is optimizing pyrolysis temperatures (400°C and 600°C) and biochar doses (0%, 25%, and 50%) to enhance soil fertility and seedling biomass. Both pyrolysis temperature and biochar dose are critical factors that influence the soil properties, directly affecting its effectiveness as a soil amendment. The research was conducted as a controlled greenhouse experiment over 120 days; each treatment was replicated 15 times. We observed several soil chemical properties, including pH, cation exchange capacity (CEC), organic carbon (C-organic), total nitrogen (N-total), and total phosphorus (P-total). The growth parameters assessed included above ground biomass (AGB), below ground biomass (BGB), total biomass (TB), and root to shoot ratio (R:S). Data analysis involved one-way and two-way ANOVA. Results indicated that soil properties, particularly cation exchange capacity (CEC) and organic carbon content, were improved, thereby enhancing soil fertility. However, ANOVA indicated no statistically significant differences across treatments. Biochar significantly enhanced above-ground and below-ground biomass (AGB and BGB). Nevertheless, both pyrolysis temperature and biochar dose independently influenced biomass accumulation in F. moluccana seedlings. The highest increases were observed in the treatment with the highest pyrolysis temperature (600ᵒC) and the highest dose (50%), which led to an 85% increase in AGB and a 60% increase in BGB compared to the control. Based on the study, Shorea wood biochar, particularly when used at 600°C and 50% dose, significantly improves soil fertility and seedling growth, providing a promising approach for developing F. moluccana plantations.
Heavy metals in water and sediment of Way Ratai River due to small-scale gold mining activities in Pesawaran Regency, Lampung Province (Part II: zinc, copper, cadmium, iron, and manganese) Istighfara, Vedelya; Dermiyati, Dermiyati; Rinawati, Rinawati; Prasetia, Hendra; Fasya, Muhammad Rizki Firdaus
Journal of Degraded and Mining Lands Management Vol. 12 No. 5 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.125.8705

Abstract

Heavy-metal contamination in river systems poses an escalating threat to aquatic ecosystems and public health. This study provides the first integrated geospatial assessment of zinc (Zn), copper (Cu), cadmium (Cd), iron (Fe), and manganese (Mn) in water and sediment of the Way Ratai River, an area increasingly impacted by artisanal gold processing. Inductively coupled plasma optical emission spectroscopy (ICP-OES) and X-ray fluorescence were used to evaluate water and sediment samples that were gathered at five key locations. Spatial interpolation via ArcGIS with an inverse distance weighting algorithm identified contamination hotspots. In river water, Zn averaged 0.05 ppm, Mn 0.009 ppm, and Fe 0.075 ppm, while Cd and Cu were below detection limits. Sediment concentrations were markedly elevated: Zn 702.62 ppm, Mn 685.60 ppm, Fe 2,954.72 ppm, and Cu 253.84 ppm. All detected metals exceeded regional background thresholds, particularly near gold-processing effluent zones, indicating significant geochemical accumulation. These findings underscore the urgent need for stringent waste-management protocols—such as coagulation and adsorption systems—to mitigate heavy-metal release and protect downstream ecosystems and human communities. This research closes a critical data gap and offers a spatially resolved framework for monitoring and remediation strategies in mining-impacted watersheds.
Electrokinetic Remediation Treatment of Chromium (Cr) Concentration and Distribution in Soil from the PT Semen Baturaja Cement Factory Environment Alfajrin, Achmad Chalid Afif; Komariah, Rahma Nur; Prasetia, Hendra; Halid, Muhammad Akmal; Aisyara, Arien; Simatupang, Lamtongam; Ghifari, Hamzah Daffa; Widiatama, Angga Jati; Arham, La Ode; Mukti, Aqil Chandra; Ningsih, Dina Widya; Ferdinan, Muhammad Rizky
Journal of Physics and Its Applications Vol 7, No 3 (2025): August 2025
Publisher : Diponegoro University Semarang Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpa.v7i3.25377

Abstract

PT Semen Baturaja, a cement production company in South Sumatra, Indonesia, holds a Mining Business License of 103.4 hectares, of which 64.23% was reclaimed during 2017–2021. However, the revegetation success rate remains low at only 9%, potentially due to excessive soil chromium (Cr) accumulation. This study investigates the application of electrokinetic remediation to reduce Cr concentrations and improve soil conditions for revegetation. The experiment was conducted on soil samples collected from Disposal Area 4 of PT Semen Baturaja, using a laboratory-scale setup with copper electrodes powered by a 20 V direct current, applied continuously for 48 hours. The results showed that Cr ions tend to migrate toward the anode due to electromigration, while redox reactions influence Cr distribution over time. The highest treatment efficiency was observed in segment one (11.123%), and the lowest in segment three (1.651%). These findings demonstrate the potential of electrokinetic remediation as a viable method for enhancing revegetation in Cr-contaminated post-mining soils.
Pengaruh Biochar pada Simbiosis Rhizobium dan Akar Sengon Laut (Paraserianthes falcataria) dalam Media Tanam Aulia Asmara Loka Br Tarigan; Melya Riniarti; Hendra Prasetia; Wahyu Hidayat; Ainin Niswati; Irwan Sukri Banuwa; Udin Hasanudin
Journal of People, Forest and Environment Vol. 1 No. 1 (2021): Mei
Publisher : University of Lampung

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

Abstract

Sengon laut ( Paraserianthes falcataria) merupakan tanaman yang bersimbiosis secara mutualisme dengan Rhizobium. Rhizobium adalah bakteri yang menginfeksi akar tanaman yang berfungsi dalam fiksasi nitrogen. Adanya rhizobium yang ditunjukkan dengan timbulnya tonjolan berupa bintil pada akar. Perkembangan bintil terlihat oleh media tanam. Kondisi pada media tanam dapat dibenah dengan biochar untuk meningkatkan ruang tumbuh akar dan penyerapan unsur hara salah satunya nitrogen. Tujuan dalam penelitian ini adalah melihat pengaruh biochar pada media tanam bibit sengon laut ( Paraserianthes falcataria)) terhadap simbiosis rhizobium dan akar yang dilihat dari akar bintil (nodul). Penelitian menggunakan Rancangan Acak Lengkap (RAL) dilakukan selama 6 bulan. Perlakuan yang diteliti yaitu Kontrol atau 100% tanah (K), Meranti 5% atau penambahan biochar 5% (M5), dan Meranti 10% atau penambahan biochar 10% (M10). Parameter yang diamati adalah jumlah bintil root, persen bintil efektif dan warna daun. Hasil menunjukkan dibandingkan dengan kontrol peningkatan peningkatan pada jumlah bintil (61-75%), persen bintil efektif (527-2381%) dan warna daun (16-22%) dengan aplikasi biochar pada media tanam bibit sengon laut.
Growth Improvement of Palm Oil Seedling using Biochar from Oil Palm Empty Fruit Bunch and Rubber Wood Prayoga, Seldi; Riniarti, Melya; Prasetia, Hendra; Setiawan, Kukuh; Bakri, Samsul; Hidayat, Wahyu
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 6 (2025): December 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v14i6.2179-2186

Abstract

Agricultural wastes biochar can be used to support the growth of oil palm seedlings. This study aims to assess the effectiveness of biochar pellets made from oil palm empty fruit bunches (OPEFB) and rubber wood wastes on the growth of oil palm seedlings. The research was conducted in the greenhouse using a factorial complete randomized design with two treatment factors, namely the type of biochar pellets (OPEFB and rubber wood) and doses of 0%, 5%, 10% with 10 replications. Observation included plant height, stem diameter, number of leaves, and total dry weight. The results showed that biochar pellet application had a significant effect on plant growth, especially at a 10% dose, which increased plant height, stem diameter, number of leaves, and dry weight compared with the control. The 10% dose of OPEFB biochar pellet produced a plant height of 21.4 cm, stem diameter of 3.64 cm, and number of leaves of 8 strands, while the same dose of rubber wood biochar pellet produced a height of 15.67 cm, diameter of 3.64 cm, and number of leaves of 6.67 strands. OPEFB biochar pellet showed higher results than rubber wood biochar, but at the same dose, the difference is minor. These results indicate that biochar pellets from agricultural waste have the potential to effectively support the growth of oil palm seedlings in an environmentally friendly manner.
Media Sosial Sebagai Agen Sosialisasi Nilai Keislaman: Representasi dan Negosiasi Busana Muslim di Instagram Prasetia, Hendra; Nurdiyansah, Feggy; Sarbini, Ahmad; Setiawan, Asep Iwan
JURNAL SYNTAX IMPERATIF : Jurnal Ilmu Sosial dan Pendidikan Vol. 6 No. 6 (2026): Jurnal Syntax Imperatif: Jurnal Ilmu Sosial dan Pendidikan
Publisher : CV RIFAINSTITUT

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54543/syntaximperatif.v6i6.940

Abstract

Artikel ini mengkaji peran media sosial, khususnya Instagram, sebagai agen sosialisasi nilai keislaman dalam praktik berpakaian muslimah di Indonesia. Berangkat dari fenomena berkembangnya tren busana muslim dan hijab di ruang digital, penelitian ini menempatkan Instagram sebagai arena representasi, negosiasi identitas, sekaligus komodifikasi simbol religius. Dengan menggunakan pendekatan kualitatif-deskriptif melalui studi kasus terhadap akun-akun hijaber populer dan komunitas hijabers, artikel ini menunjukkan bahwa praktik berpakaian Islami di Instagram tidak hanya mencerminkan kepatuhan terhadap syariat, tetapi juga dipengaruhi oleh logika estetika digital, budaya populer, dan industri fesyen. Hasil kajian menunjukkan adanya pergeseran makna busana muslim dari simbol kesalehan menuju identitas religius-modern yang bersifat cair dan performatif. Meskipun Instagram berfungsi efektif sebagai medium dakwah kultural dan edukasi nilai keislaman, platform ini juga berpotensi mendorong perilaku konsumtif dan reduksi makna spiritual. Artikel ini berargumen bahwa praktik berpakaian Islami di media sosial merupakan hasil negosiasi berkelanjutan antara nilai agama, identitas sosial, dan dinamika kapitalisme digital.
The Effects of Mass Communication on Changes of Public Attitudes and Behavior in the Digital Era Prasetia, Hendra; Syihab, Muhammad Fahmi; Halwati, Umi
Busyro: Jurnal Dakwah dan Komunikasi Islam Vol. 7 No. 1 (2025): November : Busyro : Jurnal Dakwah dan Komunikasi Islam
Publisher : Institut Pesantren Sunan Drajat Lamongan, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55352/kpi.v7i1.2437

Abstract

Through social media and online platforms that reach a wide audience, the development of information technology in the digital era has significantly changed the pattern of mass communication. Every message in the media does not stop at conveying information but can also have an impact on the audience. This impact is known as the mass communication effect, which has become a major focus in communication studies. How audiences think, act, and behave is largely influenced by the media. This study aims to discuss the effects of mass communication on changes in attitudes and behavior, focusing on three main domains of human psychology: cognitive, affective, and conative. This research use descriptive qualitative approach and content analysis to emphasize the effects of mass communication on the psychological realm. The results of this study demonstrate that digital media has the ability to construct knowledge, influence feelings, and drive audience action quickly and dynamically. This research confirms that the role of social media as a strategic space requires critical study, especially on the effects of mass communication on understanding the relationship between media dynamics, society, and the process of forming an opinion that has an impact on changes in people's attitudes and behavior.
The Implementation of Classroom-Based Character Education in Elementary School Learning Fathurrohman; Suparlan; Hendra Prasetia; Nurhayati
International Journal of Learning Reformation in Elementary Education Vol. 5 No. 01 (2026): International Journal of Learning Reformation in Elementary Education
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/IISTR.ijlree.001664

Abstract

This study examines the implementation of classroom-based character education in an elementary school setting. Using a qualitative exploratory case study design, the research was conducted at Muhammadiyah Karangkajen Elementary School in Yogyakarta. The participants included the principal, teachers, and students selected through purposive sampling. Data were collected through interviews, observations, and document analysis, with the researchers serving as key instruments supported by interview and observation guides. Data were analyzed through coding, thematic categorization, and interpretative analysis. The findings reveal that classroom-based character education is implemented through four dimensions: integration of character values into curriculum and learning activities, structured classroom management practices, student-centered learning models such as PBL, CTL, inquiry, cooperative learning, and discovery learning, and the development of local content. The local content component is explicitly reflected in Javanese language instruction and batik-making activities, which foster manners, respect, responsibility, independence, and cooperation among students.  
Co-Authors Ahmad Sarbini, Ahmad Ainin Niswati Aisyara, Arien Alfajrin, Achmad Chalid Afif Arham, La Ode Asep Iwan Setiawan, Asep Iwan Aulia Asmara Loka Br Tarigan Christine Wulandari Christine Wulandari Dermiyati, Dermiyati Dian Iswandaru Eva Yunita Falah Rizkasumarta Fasya, Muhammad Rizki Firdaus Fathurrohman Fathurrohman Fathurrohman Fathurrohman, Fathurrohman Ferdinan, Muhammad Rizky Ghifari, Hamzah Daffa Halid, Muhammad Akmal Hasballah, Bayu Ginanjar Hastito, Fadli Hendrawan, Rezki Naufan Irwan Sukri Banuwa Istighfara, Vedelya Iswandaru, Dian Jayawarsa, A.A. Ketut Komariah, Rahma Nur Kukuh Setiawan Kus Eddy Sartono Maulasih, Resti Melya Riniarti Mukti, Aqil Chandra N., Novriyanti Ningsih, Dina Widya Novriyanti Novriyanti Nurdiyansah, Feggy Nurhayati Pangestu, Pandu Galang Park, Byung Bae Prayoga, Seldi Putra, Heriansyah Rhahmi Adni Pesma Rinawati Rinawati Sabar Sabar Samsul Bakri Simatupang, Lamtongam Suparlan Suparlan . Syihab, Muhammad Fahmi Udin Hasanudin umi halwati Wahyu Hidayat Widiatama, Angga Jati Wijaya, Bangun Adi Wuri Wuryandani Yoannisa Egeustin Yoo, Jiho Yunita, Repha Sera