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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 1,077 Documents
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Design and Performance Test of Brown Rice Germinator with Automatic Environmental Control System for Production of Germinated Brown Rice Ressy Angli Permatasari; Sutrisno Sutrisno; I Wayan Budiastra; Haris Mawardi; Angga Firmansyah; Arfandi Hermawan; Elisa Eka Ari Purwanti Ningsih
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 14, No 1 (2025): February 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i1.171-181

Abstract

A germinator equipped with automatic environmental control system has been developed to produce the high quality of germinated brown rice. The germinator consists of germination chamber, temperature and relative humidity sensors, relays, actuator, and display panel so the germination process can be set up and controlled. The performance test were carried out covering the technical reliability of the system and the capability of germinator to produce germinated brown rice. The test results show that the brown rice germinator with an automatic environmental control system worked very well. The use of water misters and PTC air heaters is able to maintain humidity and air temperature inside germinator. The brown rice germinator can produce germinated brown rice with germination rate more than 80%. The result shows that the brown rice germinator can be used to produce germinated brown rice both for private and commercial use. Keywords: Brown rice, Germination, Humidity, Temperature.
The Effect of KNO3 Fertilizer Dosage and Paclobutrazol Concentration on The Growth and Yield of Long Bean (Vigna sinensis L.) Sintha Dayu Aringgani; Djarwatiningsih Djarwatiningsih; Agus Sulistyono
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 14, No 1 (2025): February 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i1.273-282

Abstract

Long bean production has decreased in Indonesia due to uncertain seasonal factors, such as long dry seasons and short rainy seasons. Long bean production has decreased due to inappropriate and optimal cultivation techniques. Several efforts can be made to overcome the problem of decreasing long bean productivity by fertilizing and applying growth regulators. The aim of this research is to understand the combined effect of KNO₃ fertilizer doses and paclobutrazol concentrations on the growth and yield of long bean plants. Thise research was conducted in Ketawang Village, Nganjuk, East Java. The research was a factorial experiment with Split Plot Design consisted of two treatment levels, namely KNO₃ fertilizer dose (0 g/plant, 8 g/plant, 10 g/plant and 12 g/plant) and paclobutrazol concentration (0 ppm, 150 ppm, 175 ppm and 200 ppm). The combination of 10 g/plant KNO₃ + 150 ppm paclobutrazol influences the growth and yield of long bean plants, however the application of KNO₃ fertilizer alone has no effect on the growth and yield of long bean plants. Keywords: Giberelin, Growth regulator, Harvest, Nutrient, Retardant.
Impact of Management Practices on Coffee-Pine Agroforestry: Coffee Yield and Soil Respiration Eka Novia Rosalynda; Cahyo Prayogo; Didik Suprayogo
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 14, No 1 (2025): February 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i1.155-170

Abstract

The coffee-pine agroforestry system offers a promising solution to enhance coffee yields and maintain soil health on degraded lands. This study aims to evaluate the impact of various agroforestry management practices on coffee yield and soil respiration. The experiment was conducted using a complete randomized block design across five management treatments: without management, without fertilization, organic fertilization, mixed fertilization, and recommended management by Perhutani. The observed parameters included coffee yield, soil respiration, soil moisture, soil temperature, litter biomass, canopy cover, and soil organic carbon (SOC) content. Results indicated that the recommended management (RM) plot achieved the highest coffee yield (834 kg ha⁻¹), attributed to wider planting spacing, which reduced resource competition between coffee and pine trees. The RM plot also displayed stable soil moisture and temperature, supporting coffee growth. Meanwhile, soil respiration showed no significant differences across treatments, though the mixed fertilization (MF) plot exhibited the highest respiration rate, indicating higher microbial activity due to combined fertilizer use. In conclusion, optimal management in agroforestry systems can enhance coffee productivity while preserving soil health. Keywords: Agroforestry, Coffee Yield, Soil Management, Soil Moisture, Soil Respiration.
Strategies for Accelerating Sustainable Drinking Water Pipeline Utilization Eddy Rachmad; Ahyahudin Sodri; Yuki MA. Wardhana
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 14, No 1 (2025): February 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i1.57-70

Abstract

Uncontrolled and excessive use of groundwater leads to economic, social, and environmental impacts. This study investigated factors influencing the low willingness to utilize piped water. The research was conducted in Duren Sawit Village, East Jakarta. The study focused on the sources of household clean water and the factors affecting the low utilization of piped water. A qualitative research approach was employed through in-depth interviews with key informants selected using purposive sampling, and the problem was analyzed using a fishbone diagram. The study found 81% of households use groundwater, only 9% use piped water, and 10% use both sources. The findings reveal that 25% of the households using piped water still rely entirely on groundwater. The low utilization of piped water was influenced by several factors, including socio-economic conditions, environmental behavior, groundwater quality, performance of PAM Jaya, and groundwater regulations for household usage. Based on the analysis, strategies for accelerating piped water utilization were proposed, including socialization and education on groundwater conservation, quality of groundwater, improvement of PAM Jaya performance, and changes in regulations regarding groundwater use for household. Environmental behavior is identified as the primary factor influencing the high use of groundwater. Several strategies involving stakeholders are necessary to promote the use of piped water among households. Keywords: Environmental behaviour, Ground water, Ground water regulation, Piped water, Socio economic.
Analysis of Ultra Fine Bubble Addition on Biodiesel Fuel to Reduce Emission of Two Wheel Tractors Diesel Engine Hanifa Farafisha; Sam Herodian; Anto Tri Sugiarto; Riesta Anggarani; Joko Pitoyo; Yogi Pramudito
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 14, No 1 (2025): February 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i1.296-308

Abstract

Diesel engines are known as high efficiency engines and are used in public transportation and agricultural sector. The exhaust gas produced by diesel engines is dangerous for human health. Ultra Fine Bubble (UFB) technology which is currently being developed is an emission reduction alternative that can enrich oxygen in fuel and has the potential to reduce emissions. This research was carried out to apply UFB technology to a variety of fuels and compare the emission results. This research method is data collection based on experimental tests. The types of fuel used in this research are biodiesel and biodiesel-diesel mixture. The research procedure starts from instrument preparation, fuel inflation which produces UFB fuel, fuel characteristics, instrument performance testing and data processing. The characteristic testing method follows the American Standard Testing and Materials (ASTM) and performance testing follows the ISO/IEC 17025:2017 standard. The research results show that fuel treated with ultra-fine bubbles can reduce exhaust emissions compared to fuel without UFB. CO content decreased by 608 parts per million (ppm) in the biodiesel-diesel blend and 306 ppm in biodiesel with UFB. The exhaust gas temperature becomes stable when the fuel contains bubbles and reduces NO and NOx content in emissions. Keywords: Biodiesel, Diesel engine, Fuel, Ultra fine bubble
Increasing the Income of Chili Farmers by Implementation of Internal Company Institution Dwi Kristiana; Mukson Mukson; Siswanto Imam Santoso
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 14, No 1 (2025): February 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i1.319-329

Abstract

Chili is an important commodity for daily consumption, and its demand has the potential to increase as the population grows. The centralized location of production and the uncertainty of production quantities cause price disparities, reflecting poor supply management. This study aims to describe the corporate institutions of chili farming, analyze institutional performance, and factors that affect income of farmers. The method used is descriptive quantitative with a sample of 77 respondents taken with the Slovin formula at Gapoktan Bina Tani and Gapoktan Sumber Jaya in Blora. Data were collected through interviews with questionnaires, and multiple linear regression analysis was used to determine influential factors. The results showed that the institutional strengthening program variable (X1), the partnership expansion program (X2), and the economic scale improvement program (X3) had a high average value, meaning that the majority of respondents gave positive responses to the programs implemented. Factors that have a significant effect on chili farming income are variables of education level, length of farming, and amount of production, while variables of age, land area, and company performance have no significant effect on chili farming income. This conclusion indicates the need for institutional development to improve the welfare of chili farmers. Keywords: Chilli, Corporation, Farmer, Income, Institution.
Impact of High-Temperature Heating on the Chemical Stability and Sensory Quality of Red Palm Oil Sri Hidayati; Aulia Rahmawati; Erdi Suroso; Subeki Subeki; Tanto P. Utomo
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 14, No 1 (2025): February 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i1.215-225

Abstract

Red palm oil (RPO) is known for its high carotenoid content, particularly β carotene and α-carotene, which provide significant provitamin A activity. However, it is susceptible to oxidation during frying and results in nutrient loss and quality degradation. This study investigates the effects of high temperatures and prolonged heating durations on the chemical and sensory properties of RPO. The experiment involved heating RPO at three different temperatures (140°C, 180°C, and 220°C) for durations ranging from 2 to 10 hours. Chemical analysis included peroxide values, free fatty acids, and changes in functional groups through Fourier Transform Infrared (FTIR) spectroscopy. Sensory evaluations focused on aroma and color alterations due to heating. Results showed that prolonged heating of RPO at high temperatures led to significant increase in peroxide values, and the formation of oxidation products, including aldehydes and ketones, which negatively impacted the sensory qualities. The oil darkened, and a burnt aroma developed, reducing overall sensory appeal. These findings provide new insights into the optimal frying conditions to preserve the nutritional and sensory qualities of RPO, particularly by minimizing heating duration and temperature. Keywords: Nutritional value, Prolonged heating, Red palm oil, Sensory attributes, Thermal oxidation.
Effectiveness of Organic Fertilizer Enriched with Humic Acid on Soil Chemical Quality, Nutrient Uptake, and Shallot Yield in Calcareous Soils Rupa Matheus; Donatus Kantur
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 14, No 1 (2025): February 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i1.309-318

Abstract

Calcareous soils have great potential for the development of food crops and horticulture, but they are constrained by high pH, low organic matter content, and less than optimal cation exchange capacity, thus affecting the availability of nutrients. This study aims to evaluate the effectiveness of organic fertilizer enriched with humic acid on soil chemical quality, nutrient uptake, and yield of shallots on calcareous soils. The study was designed with two factors, namely type of organic fertilizer (manure and bokashi) and concentration of humic acid (0%, 10%, and 20%) added to the organic fertilizer. The results of the study showed that the application of organic fertilizers, both manure and bokasih, had a similar effect on soil quality and shallot yields. However, the addition of humic acid at a concentration of 20% significantly improved the chemical properties of the soil, nutrient uptake (especially nitrogen and potassium), as well as the yield component of shallots when compared to the concentration of 10% and control. The addition of humic acid has been proven to be effective in improving nutrient availability and supporting plant growth. This innovation can be an effective solution to improve the quality of calcareous soils and agricultural products, especially shallots, which supports sustainable and environmentally friendly agriculture. Keywords: Calcareous soil, Humic acid, Nutrient uptake, Organic fertilizer, Shallots.
Wastewater Processing of Chicken Slaughterhouses Using Combination of Trickling Filter and Rotating Biological Contactor Handriani Handriani; Muhammad Faisal; Cut Meurah Rosnelly
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 14, No 1 (2025): February 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i1.249-261

Abstract

This research was conducted to explore the effectiveness of combined Trickling Filter (TF) and Rotating Biological Contactor (RBC) method in processing liquid waste from chicken slaughterhouses through local and economical media. Microorganisms were grown by inserting liquid waste into a TF tank containing gravel, used ceramics, coconut shells, and pumice. Subsequently, liquid waste flowed into a rotating biological contactor added with local microorganisms from stale rice and fermented banana stems. Waste treatment was carried out with variations in retention time of 1, 3, and 6 h. The results showed that at 6 h, the organic compound decreased significantly. The removal efficiency obtained was 87.05%, 82.11%, 90.51%, 22.57%, 79.36%, and 88.66% for Biological Oxygen Demand, Chemical Oxygen Demand, Total Suspended Solids, Total Dissolved Solids, Turbidity, and Ammonia, respectively. This high efficiency was supported by the collaboration between the activity of microorganisms attached to the TF biofilm and the use of local microorganisms in decomposing organic compounds in the rotating biological contactor. The combination of the two methods has been proven to help waste treatment process from chicken slaughterhouses in an environmentally friendly and efficient manner. Keywords: Biofilm, Chicken slaughterhouse waste, Local microorganisms, Rotating biological contactor, Trickling filter.
Physicochemical and Sensory Characteristics of Noni (Morinda citrifolia) Juice Drink with the Addition of Ginger and Lemongrass Riska Rian Fauziah; Shinta Zahrotun Nisa; Jayus Jayus
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 14, No 2 (2025): April 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i2.473-482

Abstract

Noni (Morinda citrifolia) contains bioactive compounds, but it has an unpleasant odor caused by caproic acid. Due to essential oil compounds, ginger and lemongrass can be used to reduce the unpleasant aroma of noni fruit. This research aims to evaluate the effect of ginger and lemongrass with varying concentrations of noni juice on physicochemical and sensory characteristics noni drink. The study employed a completely randomized design with six treatments and four replications. Physicochemical data were analyzed using ANOVA and Duncan's post hoc test, while sensory data were analyzed using the Chi-Square test. Results indicated that the type of ginger and concentration of noni juice significantly influenced the chemical characteristics. A concentration of 10 ml of noni juice affected the physical and sensory properties of noni juice beverage, but this was not observed at a concentration of 20 ml. The best formula resulted from treatment with a concentration of 10 ml of noni juice and the addition of 10 ml of lemongrass, with an overall score of 4.13 (liked). This was attributed to the flavonoid content of 0.290 mgQE/ml, polyphenol content of 0.3500 mgGAE/ml, vitamin C content of 0.114 mg/ml, antioxidant activity of 17.65ml, as well as satisfactory scores for taste, aroma, and aftertaste. Keywords: Caproic acid, Drink, Noni, Spice.

Page 63 of 108 | Total Record : 1077

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