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INDONESIA
Jurnal Keteknikan Pertanian
Published by Institut Pertanian Bogor
ISSN : 24070475     EISSN : 23388439     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Keteknikan Pertanian dengan No. ISSN 2338-8439, pada awalnya bernama Buletin Keteknikan Pertanian, merupakan publikasi resmi Perhimpunan Teknik Pertanian Indonesia (PERTETA) bekerjasama dengan Departemen Teknik Mesin dan Biosistem (TMB) IPB yang terbit pertama kali pada tahun 1984, berkiprah dalam pengembangan ilmu keteknikan untuk pertanian tropika dan lingkungan hayati. Jurnal ini diterbitkan dua kali setahun. Penulis makalah tidak dibatasi pada anggota PERTETA tetapi terbuka bagi masyarakat umum. Lingkup makalah, antara lain: teknik sumberdaya lahan dan air, alat dan mesin budidaya, lingkungan dan bangunan, energi alternatif dan elektrifikasi, ergonomika dan elektronika, teknik pengolahan pangan dan hasil pertanian, manajemen dan sistem informasi. Makalah dikelompokkan dalam invited paper yang menyajikan isu aktual nasional dan internasional, review perkembangan penelitian, atau penerpan ilmu dan teknologi, technical paper hasil penelitian, penerapan, atau diseminasi, serta research methodology berkaitan pengembangan modul, metode, prosedur, program aplikasi, dan lain sebagainya.
Arjuna Subject : -
Articles 629 Documents
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Analisis Distribusi Suhu dan Aliran Udara pada Proses Pengeringan Wortel Menggunakan Tray Dryer Berbasis Simulasi CFD Renny, Renny; Muhammad Iqbal, Muhammad Iqbal; Eka Putri, Renny; Putri, Annisa Octaviani; Abdi Lubis, Muhammad Iqbal
Jurnal Keteknikan Pertanian Vol. 13 No. 4 (2025): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.013.4.529-545

Abstract

Wortel (Daucus carota L.) merupakan sayuran bernutrisi tinggi yang mudah rusak akibat kandungan airnya yang tinggi. Pengeringan merupakan metode yang efektif untuk memperpanjang masa simpan wortel, salah satunya dengan menggunakan alat pengering tipe rak (tray dryer). Namun, efisiensi proses pengeringan sangat dipengaruhi oleh keseragaman distribusi suhu dan aliran udara di dalam ruang pengering. Penelitian ini bertujuan untuk mengevaluasi distribusi suhu dan aliran udara pada tray dryer menggunakan pendekatan Computational Fluid Dynamics (CFD) selama proses pengeringan wortel. Simulasi dilakukan pada tiga variasi suhu (50°C, 60°C, dan 70°C) dan dua kecepatan aliran udara (2 m/s dan 3 m/s) dengan bantuan perangkat lunak SolidWorks, ANSYS Fluent, dan Origin. Hasil simulasi menunjukkan bahwa distribusi suhu dan aliran udara tidak merata, terutama pada bagian tengah dan atas alat pengering. Ketidakteraturan ini dapat menyebabkan pengeringan yang tidak seragam dan menurunkan kualitas produk akhir. Validasi dengan data pengukuran menunjukkan bahwa model simulasi memiliki tingkat kesalahan kurang dari 4%, sehingga dapat dianggap cukup akurat untuk digunakan dalam perancangan dan optimasi sistem pengeringan yang lebih efisien.
Portable NIR Spectroscopy for Cocoa Bean Re-fermentation Analysis: A Rapid and Reliable Technique Samsudin, Samsudin; Rahardjo, Yogi Purna; Firdaus, Jonni; Suro Mardjan, Sutrisno; Mitaray, Musimura K
Jurnal Keteknikan Pertanian Vol. 13 No. 4 (2025): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.013.4.513-528

Abstract

Portable near-infrared (NIR) spectrometers may examine samples directly on-site, speeding up data gathering. However, the NIR spectrometer has a limited wavelength, ranging from 740 to 1,070 nm, whereas previous studies used a longer wavelength. The research aims to determine the fermentation index, pH, and moisture content of fermented dry cocoa beans using a portable Near-Infrared (NIR) spectrometer. The NIR spectra were preprocessed using several methods, including the Savitzky-Golay first and second derivatives (SG 1 and SG2), Linear Baseline Correction (LBC), Multiplicative Scatter Correction (MSC), comparative Partial Least Square Regression (PLSR) modeling, and Artificial Neural Network (ANN). To simulate different fermentation levels, unfermented cacao beans underwent pretreatment fermentation for durations of 0, 24, 48, and 72 hours. The prediction outcomes of ANN models, when applied to dried fermented cocoa beans with data preprocessing, offered better results in comparison to PLSR models, with strong correlation, lowest RMSEC, and highest residual predictive value. The most effective method for predicting fermentation index was ANN combined with LBC preprocessing, while optimal pH models were applied using the SG2 method. The effective moisture content models were developed using MSC preprocessing. The analytical approach of portable NIR spectroscopy produced rapid and accurate results to determine the quality of ground-dried cacao bean fermentation.
Design and Fabrication of a Microcontroller-Based Automatic LED Grow Light Array System for Leafy Vegetables in Indoor Vertical Hydroponic Nanda, Muhammad Achirul; Saukat, Muhammad; Amaru, Kharistya; Dwiratna, Sophia; Cahyono, Muchamad Ricky Wibo
Jurnal Keteknikan Pertanian Vol. 13 No. 4 (2025): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.013.4.559-575

Abstract

Indoor vertical hydroponic systems require precise and energy-efficient lighting to support optimal growth of leafy vegetables. This study presents the design and fabrication of a microcontroller-based automatic LED grow light system tailored for indoor hydroponics. A tailored LED grow light is necessary because each crop responds uniquely to light quality and intensity, and a customized spectrum ensures optimal growth while minimizing energy use. The system integrates a red–green–blue LED configuration (70:10:20%) with an ESP32 microcontroller, real-time clock (RTC), BH1750 light sensor, keypad interface, and LCD. The lighting cycle was programmed for 12 hours per day and tested continuously over two days. The system demonstrated accurate scheduling, with LED activation at 06:00 and deactivation at 18:00 and a timing deviation of only 1–2 seconds. During operation, the system maintained a stable photosynthetic photon flux density (PPFD) of 260–275 µmol/m²/s, producing an estimated daily light integral (DLI) of about 12 mol/m²/day, which is suitable for leafy vegetable production. Light distribution analysis using cubic interpolation showed that increasing the lamp height from 20 cm to 30 cm improved spatial uniformity, with the most uniform distribution achieved at 30 cm despite a slight reduction in intensity. The system consumed 2.65 kWh per day, covering four LED arrays and the control module. Overall, the proposed system offers a reliable, programmable, and energy-efficient lighting solution for indoor hydroponic environments, supporting sustainable crop production through precise scheduling and an optimized spectral configuration.
GIS-Based Spatial Analysis for Optimizing Spare Parts Distribution of Combine Harvesters in Lampung, Indonesia Nuargimah, Qouamunas Tsani; Setiawan, Radite Praeko Agus; Solahudin, Mohamad
Jurnal Keteknikan Pertanian Vol. 13 No. 4 (2025): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.013.4.642-652

Abstract

Rice harvesting machine in Lampung Province has been commonly used for both personal use and contracting system. This opens up business opportunities for the provision of spare parts and machine repair services, especially during the main harvest season. Determining office locations or business policies in a region requires an analysis of the internal and external factors of the business itself. The analytical method used in this study was Spatial Data Analysis (SDA) to determine the types of strategies and policies that must be carried out by dealers of Kubota brand harvesting machines in Lampung Province. This decision support system is based on the results of spatial data analysis at the sub-district level. The results of spatial data analysis that combines data on paddy field area, slope level, and machine acceptance level show that there are six groups of potential priority areas included the sub-district recommendation for placing part shop and comparing with the existing active dealer part shop. There are six areas group, and dealer has cover 4 of them. Dealer is suggested to add two more-part shop that located in Suoh and Sungkai Utara to cover all areas group that can cover all area within 2 hours by motorbike. Keywords: Combine harvester, spatial analysis, location determination analysis, decision support system
Physicochemical Properties of Ambarella Fruit Leather with Variations in Gum Arab Concentration Rahmadhia, Safinta Nurindra; Dewi, Ratna Sintiya; Dewi, Soraya Kusuma
Jurnal Keteknikan Pertanian Vol. 13 No. 4 (2025): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.013.4.627-641

Abstract

Fruit leather is a thin sheet product made from dried fruit pulp until it has a flexible texture and can be rolled. Ambarella was chosen as the raw material because it has a sour taste and is naturally rich in vitamin C. The elasticity of fruit leather is influenced by the type of binding agent used, one of which is gum arab. Gum arab is a polysaccharide from the sap of Acacia sp. that is stable at pH 2–7 and resistant to acidic conditions and high temperatures. This study aimed to determine the changes in physicochemical characteristics of ambarella fruit leather with the addition of gum arab at different concentrations. The formulation used five gum arab concentrations (0%, 0.6%, 0.8%, 1%, and 1.2%) and three replications. The process included preparing puree, mixing with sugar and gum arab, and drying into sheets. Parameters tested were moisture content, pH, total sugar, total soluble solids, vitamin C, crude fiber, thickness, and texture. The results showed chemical properties which are moisture content 14.10–17.08%; pH 3.09–3.47; sugar 20.00–20.02%; soluble solids 72.43–74.77%; vitamin C 5.57–12.61%; and crude fiber 1.58–2.23%. Physical properties such as thickness 1.27–1.31 mm; tensile strength 0.03–0.16 MPa; elongation 7.01–10.53%; hardness 13.66–78.85 N; gumminess 5.28–57.88 N; and chewiness 3.75–49.20 N. It can be said that the variations in gum arab significantly affected both chemical and physical properties of ambarella fruit leather is a healthy snack. Keywords: ambarella, fruit leather, gum arab, vitamin C.
Balancing Ecological and Anthropogenic Demands through Land Carrying Capacity Assessment in Tiworo Watershed Yunus, Lukman; Sudia, La Baco; Gandri, La; Erif, La Ode Muhammad; Fitriani, Vivi
Jurnal Keteknikan Pertanian Vol. 13 No. 4 (2025): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.013.4.595-612

Abstract

The Tiworo Watershed on Muna Island, Southeast Sulawesi, is experiencing significant ecological and anthropogenic pressures that threaten the sustainability of its ecosystem functions. Land cover changes have led to increased surface runoff and have impacted coastal ecosystems. This study aims to evaluate the carrying capacity of the Tiworo watershed by analyzing three key parameters: percentage of critical land  (PCL), percentage of vegetation cover  (PVC), and erosion index (EI), referring to the Minister of Forestry Regulation No. P.61/Menhut-II/2014. The research methods included spatial analysis based on Geographic Information Systems (GIS), collection of secondary data from satellite imagery and relevant agencies, and weighted calculations to determine land carrying capacity scores. The results revealed that 65.4% of the Tiworo watershed area is classified as potentially critical, with 8.14% falling into the critical to very critical category, mainly due to land use change and anthropogenic activities. Although vegetation cover is still relatively good (89.57%), the expansion of settlements and open land has the potential to disrupt ecological stability. The erosion index reached 13.65, far exceeding the tolerance threshold (ETOL 27.55 tons/ha/year), with 52.04% of the area experiencing very severe erosion (>480 tons/ha/year). The land carrying capacity score of 87.5 (good category) indicates that ecological capacity is still adequate, but high degradation pressure requires immediate intervention.
Wood Waste Charcoal Briquettes: Physical and Thermal Characteristics Based on Particle Size and Wood Type Afriyanto Pamungkas, Wiyan; Ayu Yusuf, Mega; Teraka, Martinus
Jurnal Keteknikan Pertanian Vol. 13 No. 4 (2025): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.013.4.613-626

Abstract

The depletion of fossil fuel reserves and rising fuel costs have highlighted the need for alternative household energy sources. Biomass waste, particularly sawmill residues, has potential for conversion into solid fuel in the form of charcoal briquettes. This study evaluated the physical and thermal characteristics of charcoal briquettes produced from Bus wood (Melaleuca sp.) and Rahai wood (Acacia sp.) sawmill waste at particle sizes of 10, 30, and 60 mesh. Briquettes were produced through carbonization, size reduction, binder mixing, molding, and drying, followed by evaluation of physical and thermal properties. The results showed that Bus wood briquettes had a higher density (0.56–0.60 g/cm³) than Rahai wood briquettes (0.46–0.58 g/cm³). Moisture content ranged from 10% to 13%, with the highest value observed in Rahai briquettes at 60 mesh, which affected combustion stability. Thermal analysis indicated that Bus briquettes at 60 mesh achieved a high peak temperature (608 ᵒC) and a high combustion time efficiency (92.31%), while Rahai briquettes exhibited a higher peak temperature at a coarser particle size (10 mesh, 604 ᵒC). Overall, Bus briquettes with finer particle size showed favorable physical properties and combustion behavior. These findings indicate that Bus wood waste briquettes have potential for further development as household-scale solid fuel. Keywords: charcoal briquettes, briquette properties, particle size, wood waste biomass
Sustainable Urban Farming Rack Design Using Eco Friendly Materials with Variety Load Hermawan, Ade; Rahmat; Anggara Putra, Dean
Jurnal Keteknikan Pertanian Vol. 13 No. 4 (2025): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.013.4.576-594

Abstract

Vertical farming requires a structurally sound and environmentally sustainable racking system; however, existing research largely neglects the evaluation of the structural safety of eco-friendly racking materials under various operational loads. This gap necessitates further rigorous mechanical performance assessments to ensure the long-term reliability of the system. This study aims to develop a vertical farming racking design with an adequate safety factor by examining its structural response to various load scenarios. A design-construction methodology supported by SolidWorks simulations was used to evaluate stress distribution, strain behavior, and deformation patterns. Simulation results using SolidWorks software indicate that the maximum compressive stress at the loaded joint surface is 13.734 MPa, while the minimum stress is 1.149 MPa. The highest load occurs at the fourth (bottom) joint level due to pump-induced water pressure. The maximum strain recorded is 0.00491, with a minimum of 0.00041. The top shelf level exhibits a maximum displacement of 48.165 mm, while the minimum displacement is 0 mm. This shows that the material and shape of the frame that has been made are in the safe category with a safety factor (sf) of 2.4. These findings indicate that the proposed rack design maintains structural integrity within safe limits and is suitable for application in vertical farming systems.
Application NIR Spectroscopy for Prediction Soluble Solids Content and Classification of Tomatoes During Storage Andasuryani, Andasuryani; Maulana, Raisal; Cherie, Dinah
Jurnal Keteknikan Pertanian Vol. 13 No. 4 (2025): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.013.4.653-666

Abstract

Tomatoes are a horticultural commodity that is highly susceptible to quality degradation after harvest; therefore, appropriate postharvest handling is required to maintain quality. This study aims to evaluate the potential of near-infrared (NIR) spectroscopy for assessing tomato quality by applying partial least squares (PLS) to predict soluble solids content (SSC) and linear discriminant analysis (LDA) for classification based on storage temperature and ripeness level, with SNV pretreatment. Tomato samples were stored at 10 °C and 28 °C and observed at the breaker and pink ripeness stages. The best PLS model was obtained with SNV pretreatment and 10 latent variables, yielding R² calibration = 0.89, RMSEC = 0.19°Brix, R² prediction = 0.80, and RMSEP = 0.26 °Brix. The RPD value of 2.04 and the RER of 8.08 indicate that the model has a good predictive ability for evaluating tomato SSC. Meanwhile, LDA distinguished storage temperature better (accuracy 89.13%) than ripeness level (accuracy 65.21%). These results demonstrate that NIR spectroscopy can be used as an effective nondestructive method for analyzing the SSC of tomatoes during storage, reflecting the levels of sugars, organic acids, and other soluble compounds that contribute to the taste and overall fruit quality. Keywords: NIR Spectroscopy, Soluble Solids Content, Storage Temperature, Ripeness Level, Tomato.

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