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Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering)
Published by Universitas Lampung
ISSN : 2302 559X     EISSN : 2549 0818     DOI : -
Core Subject : Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Engineering
Jurnal Teknik Pertanian Lampung or Journal of Agricultural Engineering (JTEP-L) is a peer-reviewed open-access journal. The journal invites scientists and engineers throughout the world to exchange and disseminate theoretical and practice-oriented researches in the whole aspect of Agricultural Enginering including but not limited to Agricultural Mechanization, Irrigation, Soil and Water Engineering, Postharvest Technology, Renewable Energy, Farm Structure, and related fields. The first issue was published in October 2012 by Department of Agricultural Engineering, Faculty of Agriculture, University of Lampung. Jurnal Teknik Pertanian Lampung has ISSN number 2302 - 559X for print edition on October 10, 2012 then 2549 - 0818 for online edition on January 10, 2017. Jurnal Teknik Pertanian Lampung is issued periodically four times a year in March, June, September, and December. Jurnal Teknik Pertanian Lampung has been indexed by Google Scholar, Crossref, Directory Open Access Journals (DOAJ), and CABI. Since Volume 5 Issue 1 (2016) Jurnal Teknik Pertanian Lampung has been accredited as SINTA 3 by Directorate General of Higher Education (DIKTI). Starting Volume 10 Issue 3 (2021) the journal received accreditation SINTA 2.
Arjuna Subject : -
Articles 1,170 Documents
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Dampak Medan Magnet terhadap Karakteristik Pembakaran Tetesan Minyak Kelapa Wigo Winarko; Yuke Hary Laksono
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 15 No. 1 (2026): February 2026
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v15i1.301-312

Abstract

Improving the combustion efficiency and stability of biofuels such as virgin coconut oil (VCO) is a major challenge in renewable energy development. This study aims to investigate quantitatively the effect of external magnetic field configuration on the freezing dynamics of single VCO droplets. The experiment was performed using combustion of a single droplet placed on a thermocouple that also functions as a temperature meter. To generate a flame, the droplet was heated using a heating element until it ignites. The VCO droplets were burnt under five conditions: without a magnetic field (WOM), and between two permanent magnets with four different pole configurations, attractive (N-S, S-N) and repulsive (N-N, S-S). The observation included flame morphology, temperature profile, flame height, burning rate, and ignition delay time. Results showed that the magnetic field significantly improves combustion performance. The flicker instability due to buoyancy can be eliminated, while the peak temperature increases from 761 °C in the WOM condition to 858 °C in the S-N configuration. Furthermore, the combustion rate increased, and the ignition delay time decreased from 4.99 s (WOM) to 3.43 s (N-S/S-N). Consistently, the attractive field configuration (N-S/S-N) yielded the best performance. These findings confirm that the magnetic field orientation serves as a key parameter to control the dynamics and enhance the combustion intensity of biofuels.
Analysis of Clove Agroforestry Productivity and Sustainability Using a Systemic Approach (MDS RAP-AFS) in Wolo District, Kolaka Regency Andi Apriani Silondae; Sitti Rosmalah; Hartati Hartati; Adlina Husni Putri
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 15 No. 1 (2026): February 2026
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v15i1.396-407

Abstract

Kolaka Regency makes a significant contribution to clove production in Southeast Sulawesi. Wolo District, as one of the centers of clove production in Kolaka, faces complex challenges, including declining productivity. Agroforestry systems are expected to be a solution to increase productivity and the sustainability of clove farming in Wolo District. The purpose of this study is to analyze the productivity and sustainability of agroforestry-based clove farming. The method used to address the problem is productivity analysis and MDS analysis, utilizing the RAP-AFS approach (encompassing ecological, economic, social, and institutional dimensions). The results of the study show that clove productivity before the introduction of agroforestry in 2020 was 0.27 ton/ha. After the introduction of clove agroforestry in 2023, clove productivity began to increase, reaching 0.54 ton/ha in 2025. The level of sustainability of agroforestry-based clove farming in Wolo District, Kolaka Regency, is entirely in the fairly sustainable category in each dimension. The respective index values are ecological (67.01), economic (56.73), social (57.63) and institutional (51.90). The study's conclusion reveals that productivity has increased following the introduction of agroforestry, and the sustainability status of clove agroforestry in Wolo District, Kolaka Regency, is categorized as fairly sustainable, with the institutional dimension attribute being the most influential factor.
Design of Internet of Things (IoT)-Based Control System on a Hybrid Drying Machine for Sengon Wood Pallets Yefri Chan; Suzuki Sofyan
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 15 No. 1 (2026): February 2026
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v15i1.146-152

Abstract

This study aims to design and build a sengon wood pallet drying system with an Internet of Things (IoT) based system as a monitoring and control of drying parameters such as temperature, humidity and reduction of wood mass during the drying process. Drying of sengon wood pallet samples using a combined infrared-hot air method was carried out at temperatures of 65, 75 and 85 °C and at an air velocity of 2m/s. Observation involved wood moisture content, core temperature, chamber temperatures, and air humidity which were recorded every 10 min interval during drying process. Results showed that the IoT system can function well and make the sengon wood pallet drying process monitored and controlled remotely. Wood pallet sample reached optimum conditions with moisture content of 19% at a temperature test of 85 °C. At this condition average core temperature of sengon wood pallets of 67.05 °C was recorded and a drying time of 180 min was required. The longest drying time was at a test temperature of 65 °C, with an average core temperature of 56.37 °C, and a drying time of 370 min.
Design and Development of a Web-Based Thermal Application for Vapor Compression Refrigeration Systems Ratu Yanra Dewi; Muhamad Yulianto; Mohamad Solahudin; Leopold Oscar Nelwan; Ida Afriliana; Roni Darpono; N Nasruddin
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 15 No. 1 (2026): February 2026
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v15i1.19-32

Abstract

The growth of the global food industry has led to an increased demand for cold storage systems to maintain product quality. Cold storage systems based on the vapor compression cycle offer high energy efficiency. However, their design involves multiple stages, ranging from cooling load calculations to prototype development for performance evaluation. This study integrates digital twin–based thermal simulation with Life Cycle Climate Performance (LCCP) analysis into a single web-based platform, namely THE POCI, for cold storage design. The application allows system design, performance calculation, and estimation of the system emission. The development process followed the System Development Life Cycle (SDLC) methodology. Functional testing was conducted using Black-box Testing, while user evaluation was performed using the System Usability Scale (SUS). The results show that all modules provide the expected information and can be used effectively. Model validation against experimental data resulted in Mean Absolute Percentage Error (MAPE) values of 11% for compressor power, 17% for cooling capacity, and 14% for the coefficient of performance (COP). User evaluation involving 47 respondents across the four modules yielded a SUS score of 64.41, indicating that the application is well accepted and has an adequate level of usability.
Adoption of Integrated Crop Management Technology Innovation and Sustainable Lowland Rice Development Strategy in Tasikmalaya Regency, West Java Province Abdul Mutolib; Candra Nuraini; Kirana Nur Ilmiati
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 15 No. 2 (2026): April 2026
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v15i2.663-675

Abstract

Adoption of Integrated Crop Management (ICM) technology affects both productivity and the sustainability of farming practices. This study aims to analyze the level of ICM adoption, identify influencing factors, and formulate strategies for sustainable rice cultivation. The research employed a quantitative approach using a survey of 76 rice farmers in Salawu District, Tasikmalaya Regency. Adoption levels were assessed based on 11 key indicators. Factors influencing adoption were examined using multiple linear regression with F-test for simultaneous significance and t-test for partial effects. SWOT analysis was employed to develop rice cultivation strategies. The results indicate that the overall ICM adoption level is low. Indicators with high adoption include the use of superior seed varieties, organic fertilizers, intermittent irrigation, integrated weed and pest management (IPM), and post-harvest handling. Eight significant variables were identified: land size, self-efficacy, formal education, cosmopolitan orientation, productivity, extension worker role, availability of farming inputs, and innovativeness. SWOT analysis places the adoption condition in quadrant I (aggressive strategy), emphasizing the optimization of internal strengths, strengthening agricultural extension, and diversifying simple innovations aligned with traditional practices. Participatory extension, target determinants of adoption, and support simple sustainable ICM innovations need to be strengthen to increase rice production.
Simulation of Design Flood Discharge under Projected Land Cover Scenarios Using ANN–MOLUSCE and HEC-HMS in the Cijangkelok Watershed Vika Febriyani; Yadi Suryadi; Tri Wahyudin Ahmad; Arief Yudho Wicaksono; Yosephina Puspa Setyoasri
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 15 No. 1 (2026): February 2026
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v15i1.419-430

Abstract

River flooding during rainy season is partly resulted from land cover changes. This study analyzes the impact of land cover changes on flood hydrographs using Curve Number (CN), Impervious (I), and Initial Abstraction (Ia). Land cover data (2009 and 2022) were obtained from the Ministry of Environment and Forestry, while the 2035 scenario was modeled with QGIS MOLUSCE (ANN). CN and I values were then applied in HEC-HMS simulations with SCS and Snyder Unit Hydrograph methods. Results show major land conversion by 2035 is particularly from dryland to rice fields, built-up areas, and forest plantations. The 2035 land cover prediction had minimum overall error of 0.0332 and Kappa coefficient of 0.765, indicating good model reliability. Composite CN increased from 67.9 (2009) to 68.0 (2022) and 68.4 (2035); I values from 5.6 to 5.7 and 6.4; while Ia decreased from 24.0 to 23.9 and 23.5 (2035). Flood discharges with the SCS method rise from 617.2 m³/s (2009) to 623.8 m³/s (2022) and 641.3 m³/s (2035), while the Snyder method produced 621.3, 621.6, and 630.5 m³/s. Statistical comparison between simulated and frequency-based design flood discharge results in PBIAS values of 0.1–0.2 (very good) and NSE of 1.0 (very good). The discharge increases of 1.1–2.8% indicate that land cover changes contribute to higher flood potential, but still in moderate level as most conversion is to rice fields, which function as temporary water storage and delay direct runoff.
The Use of Botanical Preservatives to Maintain the Quality of Smoked Catfish Edo Saputra; Rokhani Hasbullah; Emmy Darmawati; Mala Nurilmala
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 15 No. 1 (2026): February 2026
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v15i1.63-78

Abstract

The use of botanical preservatives in smoked catfish is a natural approach to maintaining quality during initial storage through the antioxidant and antimicrobial activities of its bioactive compounds. This study aims to examine the effect of garlic, red ginger, and red galangal extracts in maintaining the sensory quality, color stability, and microbiological contamination of smoked catfish. Smoked catfish were coated with botanical extracts according to the formulation, then stored at room temperature and evaluated after five days of storage. The parameters observed included color changes, sensory evaluation, and microbial contamination. The data were analyzed using ANOVA, Pearson's correlation, and quadratic regression models to identify the relationship between treatment and quality response. The results showed that botanical preservatives were significantly (p < 0.05) effective in slowing the deterioration of smoked catfish quality. The preservative formulation of 25% garlic, 50% red ginger, and 25% red galangal was the best treatment, with better color stability, improved sensory acceptance, and a more effective mechanism of inhibiting microbial growth. These findings confirm the potential of botanical preservatives as a natural preservative alternative for smoked catfish products.
PENILAIAN TINGKAT LAJU EROSI di DAS CISANGGARUNG HULU MENGGUNAKAN METODE USLE Tri Wahyudin Ahmad; Muhammad Syahril Badri Kusuma; Faizal Immaduddin Wira Rohmat; Arief Yudho Wicaksono; Vika Febriyani
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 15 No. 1 (2026): February 2026
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v15i1.346-360

Abstract

Soil erosion is one of the major environmental degradation processes that directly contribute to land quality deterioration, increased river sedimentation, and disruption of hydrological functions within a watershed. This study aims to spatially model erosion rates in the Upstream Cisanggarung Watershed using the Universal Soil Loss Equation (USLE) integrated with a GIS-based Model Builder to develop an automated, efficient, and reproduceble workflow. The analysis was conducted by incorporating all USLE components (R, K, LS, and CP). Rainfall data, soil type maps, 30 m resolution FABDEM, and land cover maps were employed as the main inputs in the modeling process. The results indicate that erosion rates range from 20.66 to 67.60 ton/ha/years, with a Sediment Delivery Ratio (SDR) of 6.58%. Consequently, the sediment yield reaching the watershed outlet was estimated to range from 60.517,5 to 198.034,6 ton/years. Spatially, erosion hotspots were identified in areas with steep slopes dominated by dryland agriculture and plantation land use. The integration of Model Builder improve data processing consistency, reduce manual errors, and enable rapid data updates for subsequent analyses. These findings underscore the need for implementing conservation strategies such as terracing, contour farming, and vegetative rehabilitation to reduce erosion rates and support sustainable watershed management.
Assessment of Flood Discharge Using the HSS SCS–CN Method and Implications for Adaptive Sabo Dam Design in the Saluki River Yosephina Puspa Setyoasri; Dantje Kardana Natakusumah; Vika Febriyani; Deddy Irwansyah
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 15 No. 2 (2026): April 2026
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v15i2.676-688

Abstract

In 2018, the Saluki River was morphologically altered due to 7.4 magnitude earthquake. The changes necessitated an evaluation of post-earthquake hydrological conditions prior to Sabo Dam planning. This study aims to estimate the design flood discharge and assess its implications for the preliminary design of a Sabo Dam in Saluki River. Design flood discharge was estimated using the Soil Conservation Service – Curve Number Synthetic Unit Hydrograph (SCS-CN) method. The model results were calibrated using bankfull discharge measured directly. A sensitivity analysis of the CN parameter was performed with ±10% variation to evaluate the effect of post-earthquake changes on peak flood discharge. The design flood discharge was 102.3 m³/s for the 2-year return period (Q2), 143.9 m³/s (Q5), 173.7 m³/s (Q10), 212.8 m³/s (Q25), 244.8 m³/s (Q50), and 272.8 m³/s (Q100). The SCS-CN simulation results deviate only 0.15% from the observed bankfull discharge, indicating that the selected hydrological parameters is in agreement with the characteristics of local rainfall-runoff process and catchment areas in the region. The sensitivity test revealed that a 10% increase in the CN value resulted in a 40% increase in the Q2 peak discharge, while a 10% decrease led to 30% reduction. The Q100 discharge of 272.8 m³/s was adopted as the capacity of Sabo Dam design. In conclusion, SCS–CN method remains applicable for watershed conditions analysis in areas which its morphological changes affected by earthquakes. However, the reliability of the model is constrained by limited field observations and potential uncertainties in CN parameter estimation.
Physical and Chemical Characteristics of Cookies Based on Modified Janten Banana Flour with Cassava Starch Substitution Zukryandry Zukryandry; Widia Rini Hartari; Maryanti Maryanti; Febrina Delvitasari
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 15 No. 1 (2026): February 2026
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v15i1.445-455

Abstract

Cookies are one of the most popular food products, widely favored for their crunchy texture and distinctive taste. However, their formulation generally relies on wheat flour, which limits the diversification of local food resources. This study was conducted to evaluate the effect of substituting modified janten banana flour with cassava starch on the physicochemical characteristics of cookies. Treatments consisted of various proportions of banana flour and cassava starch. Analyses included moisture, ash, protein, fat, carbohydrate, and dietary fiber contents, while the physical properties examined were texture (hardness) and color (L, a, b*, and whiteness index). The results showed that increasing the proportion of banana flour significantly affected the quality of cookies. Physically, higher banana flour substitution resulted in darker cookie color, lower whiteness index values, and increased hardness. Chemically, the use of banana flour increased ash, dietary fiber, and carbohydrate contents but reduced fat content, while protein content remained relatively stable. Formulations with 40% cassava starch + 60% banana flour and 20% cassava starch + 80% banana flour provided the best balance of quality and thus have potential for consumer acceptance. These findings emphasize the attractiveness of modified banana flour as an alternative raw feed-stock for healthy and functional cookies, while contributing to local food diversification too.

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