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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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Bio-physico-chemical Soil Characteristic: Intensive Tillage vs. No Tillage Reni Ustiatik; Ayu Putri Ariska; Resa Kharisma Ramadhan; Novryanti Rizqi Aziz; Syamsu Ridzal Indra Hadi; R Muhammad Yusuf Adi Pujo Nugroho; Maydella Vista Putri Rinandy; Muhammad Taufik Hidayat; Wikan Agung Nugroho; Syahrul Kurniawan
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 13, No 4 (2024): December 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i4.1196-1205

Abstract

Soil tillage has both positive and negative impacts on soil quality and crop productivity. Efforts to reduce the negative impacts of intensive soil tillage are urgently needed. This study aims to analyze the impact of intensive soil tillage on soil fertility parameters (pH, available P, organic-C, soil compaction, aggregate stability, and soil biodiversity). This research was conducted in two land uses: agriculture and forest land. The research design was descriptive-explorative through surveys and direct field observations. The sample points were determined using stratified random sampling with 3 replications (24 samples). Parameters analyzed in this study were soil compaction, aggregate stability, soil pH, soil available-P, and soil biodiversity (total microbial, soil meso-and-macrofauna). The results showed that intensive tillage affected the soil microbial population, aggregate stability, pH, and available-P (p<0.05). The negative impact of intensive soil tillage reduced total soil microbes by 59.37%. The soil macro and mesofauna found at the study site were earthworms and mycorrhizae, which had a higher density on non-tillage land, with trees as the main vegetation. This encourages efforts to introduce conservation soil tillage to maintain soil biodiversity before more severe damage occurs. Keywords: Intensive agriculture, Soil degradation, Soil fertility, Soil quality, Soil structure.
The Influence of Length of Rehabilitation Process for Ex-Nickel Mining Land on Soil pH, Soil Organic Matter, Population and Distribution of Soil Microbes Timur Priono; Retno Rosariastuti; Sudadi Sudadi; Mujiyo Mujiyo; Widyatmani Sih Dewi
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.v14i1.99-106

Abstract

This study aimed to analyze the influence of rehabilitation length process of the ex nickel mining land on soil pH, SOM, population and soil microbial distribution in East Halmahera, North Maluku, Indonesia. Purposive sampling method was taken under completely randomized design (CRD) with variation of rehabilitation length process: 0, 2, 4, 6, and 8 years. The parameter included soil pH, SOM, population and soil functional bacteria. Data was analyzed using ANOVA and continued by Duncan Multiple Range Test (DMRT) at 5% error level. The result showed the length of rehabilitation process can reduce soil pH, increasing bacteria and fungi population. Four years of rehabilitation process in 2020-Nancy with special treatment of intensive watering resulted the best soil quality characterized by soil pH 6.48, SOM 4.03%, bacteria population of 85 × 10¹ CFU/g, fungi population of 7 × 10¹ CFU/g, non-symbiotic nitrogen-fixing bacteria of 7.0 × 10¹ CFU/g, phosphate-solubilizing bacteria of 0.5 × 10¹ CFU/g, potassium-solubilizing bacteria of 1.0 × 10¹ CFU/g, and proteolytic bacteria of 3.0 × 10¹ CFU/g. The rehabilitation length of 4 years with intensive watering is recommended to provide nutrient and soil microbial on ex-nickel mining rehabilitation. Keywords: Bacteria, Fungi, Nickel, pH, SOM.
Study of Types of Packaging Materials and Storage Temperature on The Quality of Soybean Seeds (Glycine max L. Merrill) Ma&#039;sumah Ma&#039;sumah; Ida Retno Moeldjani; Sutini Sutini
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 13, No 4 (2024): December 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i4.1160-1170

Abstract

The quality of soybean seeds, encompassing physical, physiological, and chemical attributes, is crucial for successful plant growth and yield. Effective seed storage is vital in maintaining seed viability, growth capacity, and adaptability, especially amid global challenges like climate change and rising food demand. This research aimed to identify the optimal packaging material and storage temperature to preserve soybean seed quality. Using a Split Plot Design with two factors and three replications, the study examined four storage temperatures (S0: 27.1°C, S1: 7-10°C, S2: 17-19°C, S3: 20-25°C) and three packaging types (K1: plastic-coated sack, K2: PE plastic, K3: aluminum foil). Results indicated that seeds stored at 27.1°C in plastic-coated sacks experienced increased moisture, reduced vigor, slower growth, lower germination, and altered protein and fat content. Conversely, PE plastic and aluminum foil packaging maintained seed quality over three months. All packaging types effectively preserved seed quality at cooler temperatures (7-25°C). This study underscores the importance of optimal storage conditions for sustainable soybean seed availability. Keywords: Packaging, Seed Quality, Soybean Seeds, Storage, Temperature.
The Physiological Response of Germination and Growth in Solanaceae Plants (Capsicum frutescens, Solanum melongena, Solanum lycopersicum) at Different Salinity Levels Nelly Vikiladyla Della; Endah Dwi Hastuti; Nintya Setiari
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 13, No 4 (2024): December 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i4.1352-1360

Abstract

High salinity causes osmotic stress and ion imbalance that can reduce plant productivity. Solanaceae can be developed for cultivation in saline land, but its growth is influenced by the type of species. This study aims to examine the tolerance level of three Solanaceae plants to salinity stress through observation of physiological responses of germination and growth. This study used a 3 x 4 factorial Completely Randomized Design (CRD). The first factor is salinity: 0 ppm, 2,500 ppm, 5,000 ppm and 7,500 ppm. The second factor is the Solanaceae species, namely Capsicum frutescens, Solanum melongena, and Solanum lycopersicum. Germination parameters include germination power, wet weight and dry weight. The growth parameters observed include plant height, root length, stem diameter, leaf area, number of leaves, wet weight of leaves, roots and stems and dry weight of leaves, roots and stems. The results of the study showed that C. frutescens is a plant that is more tolerant to salinity up to a concentration of 5,000 ppm when compared to S. melongena and S. lycopersicum whose tolerance is up to 2,500 ppm. Keywords: Germination, Salinity, Solanaceae, Vegetative Growth.
Designing Soil Color Sensors to Determine Soil Characteristics Based on Internet of Things (IoT) Andriansyah, Muhammad Afifi; Arifin, Moch; Maroeto, Maroeto
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.v14i1.83-91

Abstract

Soil color is the important due to its relation with other soil properties. It is usually analysis with the standard Munsell Soil Color Charts (MSCC). While other properties including organic matter need to be analyzed in the laboratory. The objective of this study is to develop IoT sensor for soil that is able to detect rapidly soil color and other properties including C-organic, pH, and cation exchange capacity (CEC). Soil color data from five soil type was analyzed using the MSCC and used as input data to the IoT (internet of things) sensor. In addition, soil properties obtained from lab tests was also included. The designed IoT sensor was used to detect soil color and soil properties of 7 soil types used as the testing samples. The sensor performance was evaluated by comparing soil properties predicted using IoT and lab analysis. Results showed the use of IoT soil sensor succeeded in determining soil characteristics including pH, CEC, and C-organic based on soil color. In addition, the soil color sensor had high accuracy to predict soil properties with a very small difference compared to the lab analysis, namely 0.01% difference for C-organic, and other properties of <5% difference. The development of IoT soil sensor will be important in the fields of agriculture and land management. Keywords: Acidity (pH), CEC, C-Organic, IoT, Soil Color.
Artificial Lighting System Design with PWM Control for the Growth of Kangkung Microgreen Muhammad Fauzan; Syukriyadin Syukriyadin; Fahri Helta; Syahrizal Syahrizal; Alfisyahrin Alfisyahrin
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 13, No 4 (2024): December 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i4.1249-1261

Abstract

Microgreen plants such as lettuce, spinach, and kangkung can be cultivated indoors, with artificial lighting like Light Emitting Diodes (LEDs) replacing sunlight. This study compared the growth of kangkung microgreens under artificial lighting using Pulse Width Modulation (PWM) versus without PWM. Two sample trays, each containing 50 grams of kangkung seeds, were placed 50 cm below the light. The first tray used PWM lighting, starting with a 65% duty cycle at 8 a.m, increasing to 100% by 12 p.m, and decreasing back to 65% by 4 p.m. The second tray received constant lighting without PWM. Results showed that PWM improved power efficiency from 16.3 W without PWM to 13.36 W with PWM. Growth of kangkung microgreens improved with PWM, evidenced by better stem length, leaf count, wet weight, stem diameter, petiole length, and leaf width, although single root length with PWM (9.68 cm) was slightly shorter than without PWM (9.98 cm).Base on statistical t-test results showed that there was a significant difference in stem length between lighting treatments using the PWM method and without using the PWM method, with a significance level of 5%. The study successfully developed an automated lighting control system using PWM that enhances plant growth. Keywords: Artificial lighting, Indoor farming, Kangkung, Microgreen, Pulse wave modulation.
Flame Behavior During the Combustion of Premixed Kapok Oil Influenced by Oxygen and Magnetic Field Dony Perdana; Muhamad Nur Rohman; Mochammad Khoirul Rosidin; Muhaji Muhaji
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.v14i1.92-98

Abstract

This study aimed to determine effect of oxygen enrichment and magnetic field direction on the flame behavior kapok oil combustion. Experiment was carried out to obtain flame evolution, temperature and height. Kapok oil (600 ml) was put in the boiler, and heated to 300°C. A burner chamber is placed for the reaction between kapok oil vapor with air from compressor and oxygen. Two permanent magnets of neodymium nickel grade N52 with intensity 1.1 Tesla were placed on side of burner tip. Results showed the magnetic field produce more transparent, slimmer flames with highest temperature of 679°C, lowest flames height of 5 mm. Magnetic fields produce a Lorentz force that breaks the fuel chemical chain and creates magnetic pulses in the flames. Oxygen contained in air around the burner coupled with oxygen enrichment create excessive oxidizing gas to separate and release electrons. Excessive oxygen results in a higher flame temperature due to faster combustion reaction. The magnetic fields around flames induces flow air which magnetically cause heat transfer around the flame, resulted variable flame height. This combustion produces different flame evolution, temperature, and height. Keywords: Flames behavior, Flames colour, Kapok oil, Magnetic field, Premixed combustion.
Principal Component Analysis in the Animal Products Precooling Process Using Compressive Type Plate Cooler Surya Muttalib; Nursigit Bintoro; Joko Nugroho Karyadi; Arifin Dwi Saputro
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.v14i1.182-193

Abstract

Precooling is a critical process in the post-harvest activities of vegetable and animal products. This research aimed to evaluate the relationship between animal products’ physical, mechanical, and chemical parameters and their relationship with the treatment combination of compressive force, cooling media, and type of animal product samples using a compressive type plate cooler. The research was carried out with three types of meat (beef, chicken, and fish), three compressive forces (0, 100, and 200 kg), and two types of cooling medium (ice cubes and dry ice). The results showed that PCA using XLSTAT could be used to reduce the number of parameters to two main components which could explain 75% of the total variation in the data set. PCA was able to group precooling treatments with cooling media based on the physical, chemical, and mechanical properties. Treatments using ice media for all types of meat and compressive forces were grouped in quadrants I and II, while those using dry ice media were grouped in quadrants III and IV. Based on the type of meat sample, the results of PCA were able to group beef and chicken samples in quadrants I and IV, while tuna fish samples were in quadrants II and III. Keywords: Animal product, Cooling medium, Force compression, P recooling, PCA.
ORC Performance Study with R32 and R134a Using Biomass as an Energy Source Lalu Muh Fathul Aziz Al Azhari; Muhamad Yulianto; Edy Hartulistiyoso
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.v14i1.118-129

Abstract

The use of fossil energy as the main source of primary energy reached 84.7%, with electricity consumption in Indonesia of 1,173 kWh/capita, dominated by fossil fuels (67.21%). The decline in fossil energy reserves requires the development of alternative technologies such as the Organic Rankine Cycle (ORC) that can operate at low to medium temperatures (60°C-200°C). This research was carried out in 2 ways, experiment, and simulation. Experiments were carried out to determine the temperature that can be generated in the evaporator of ORC from the flue gas flow from burning biomass. Simulations were carried out to evaluate the performance of the ORC cycle with working fluids R32 and R134a and the contribution of CO2 to the environment using the LCCP (Life Cycle Climate Performance) method. The analysis involves measuring the outlet temperature of the evaporator. The research results show that the validation for predicting the output temperature of the ORC evaporator is very good with a Mean Absolute Percentage Error (MAPE) value of <10%. Simulation results show that in this study, R32 performed better than R134a, with a net power of 0.13 kW at a temperature of 86.83℃. LCCP analysis results show that R32 has lower direct emissions than R134a, with better LCCP values. Keywords: LCCP, Organic rankine cycle, R134a, R32, Simulation, Work output.
Effectiveness of Various Types of Manure and Inorganic Fertilizers on Populations of N-fixing and P-Solubilizing Bacteria and Nutrient Uptake of Maize in Inceptisol Alda Inayah A. Hi. Usman; Reni Ustiatik; Sri Rahayu Utami; Yulia Nuraini
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 13, No 3 (2024): September 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i3.880-889

Abstract

Bacteria are classified as non-symbiotic N-fixing and P-solubilizing play an important role in enhancing soil quality and plant growth. This study aims to analyze various types of manures and inorganic fertilizers on N-fixing and P-solubilizing bacteria population and their relationship with N and P uptake of maize in Inceptisol. The manure used was poultry, goat, and cow manure with doses of 0 t/ha, 10 t/ha, and 20 t/ha, respectively, and inorganic fertilizer NPK Phonska 15-15-15 dose 0 kg/ha; 150 kg/ha (50% of recommendation dose) and 300 kg/ha (100% of recommendation dose). Application of manure (poultry, goat, and cow manure) increased N-fixing and P-solubilizing bacteria population. The application of various types of manure and inorganic fertilizers has a significant impact on N and P uptake. The highest N and P uptake were 29.92 kg/ha and 2.63 kg/ha, respectively. Manure application can reduce inorganic fertilizer dose by up to 50%, increasing plant production efficiency and environmental sustainability. Keywords: Bacteria population, Fertilizer optimization, Inceptisol, Nutrient uptake.

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