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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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The Performance of Pivot-Type Trailer for Fresh Fruit Bunches Transport Equipment Using Two-Wheeled Tractors in Oil Palm Fields Muhammad Idkham Idkham; Muhammad Dhafir Dhafir; Safrizal Safrizal Safrizal
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 1 (2023): March 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i1.96-106

Abstract

Poor farmers in Indonesia still transport palm fruit bunches manually, so they require a lot of manpower and many of them are transported for a long time, reducing quality. Oil palm farmers have two-wheeled tractors that are used for processing rice fields that can be used for towing trailers. The existing conventional trailers do not work optimally in oil palm fields, so it is necessary to design a pivot type trailer. The purpose of this study was to see the performance of the pivot type trailer for transporting oil palm fruit bunches, the pivot type trailer and the conventional one that was tested directly on the farmers' oil palm fields involving 3 operators. The results show that the pivot type trailer has an advantage over conventional trailers and is easy to operate properly, this is reflected in its very small turning radius of 260 cm unloaded and 280 cm loaded, and has a larger working capacity.Keywords: Pivot type trailers, Conveyances, Oil palm fields, Oil palm bunches,Smallholders.    Pivot type trailers, Conveyances, Oil palm fields, Oil palm bunches, Smallholders.   
The Dynamic Model of Water Balance in A Sub-Basin Dea Evantri; Muh. Yanuar J. Purwanto; Nora Pandjaitan; Roh Santoso Budi Waspodo
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 1 (2023): March 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i1.236-245

Abstract

Management of water resources in a river basin requires a new approach. The availability of water is a basic thing that must be considered given the increasing need for water. This study aimed to develop a water balance model in the Upper Bekasi River Sub Basin. In this study water balance model of the Bekasi River Sub Basin was built with several variables that affect water demand and availability, namely population growth rate, public facilities, and efforts to utilize resources. In this research, water supply and demand modelling was carried out using a dynamic system supported by Vensim software. Simulations were carried out from 2012 to 2045. The increase in population growth was directly proportional to the increased in population water needs. This dynamic model simulation used the application of rainwater harvesting and water-saving behaviour. Water demand for the Bekasi River Sub Basin was equal to 156.649.000 m3/year. The availability of surface water was 138.127.680 m3/year and had not been able to meet the water needs. The dynamic model showed that the water balance will be deficit in 2031, namely 51.883.200 m3/year. However, with the application of the water saving scenario, the water balance has a surplus of 258.564.000 m3 / year until the end of the simulation. Water reducing behavior can be used as an efficient method of water utilization. Keywords: Population, Rainwater harvesting, Simulation, Water management, Water resource
Infiltration Model of Mediterranean Soil with Clay Texture Sitti Nur Faridah; Mahmud Achmad; Tisha Aditya Jamaluddin; Jusmira Jusmira
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 1 (2023): March 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i1.162-173

Abstract

Infiltration plays an essential role in increasing the soil water content as a part of the hydrological cycle. Infiltration affects surface runoff and soil conservation. It also determines the sustainability of the groundwater system. Heavy rain intensity exceeding the infiltration capacity will result in surface runoff, and excessive surface runoff will cause soil erosion.  This study aims to investigate the suitable infiltration rate model in the Mediterranean soil of clay textured with various soil conditions. Infiltration rate measurement employed a double-ring infiltrometer in soil without and with tillage. The applied infiltration rate model was an empirical model and the function of time, which includes the Kostiakov, Horton, and Philip Models. The results demonstrated that the Mediterranean soil infiltration rate with a clay texture was 0.91 cm/min and was relatively higher in the soil without tillage. The suitable infiltration rate model to be applied in soil conditions without and with tillage is the Kostiakov Model f = 0.700 t-0.25  and f = 0.682 t-0.22, respectively. The Kostiakov model is the most suitable infiltration rate model in Mediterranean textured clay, without tillage conditions, with a determination value of 0.988 and a deviation value of 0.005. Keywords: Horton model, Philip model, Infiltrometer; Kostiakov model, Tillage
Arduino-Based Data Acquisition Device Design for Specific Heat Determination of Hot Vegetable Oil Redika Ardi Kusuma; Radi Radi; Arifin Dwi Saputro
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 1 (2023): March 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i1.118-128

Abstract

Vegetable oil is commonly used for cooking and frying at high temperatures. Information on the oil's specific heat in a process can help estimate the time and energy spent to reach a particular temperature. However, finding an accurate and affordable instrument for measuring specific heat at high temperatures was complex. This study aimed to design a prototype data acquisition device (DAQ) that can support the specific heat of high-temperature vegetable oil determination using the Joule experiment and Newton's correction. This study had two stages: prototype design/construction and prototype testing. The DAQ prototype consisted of a PZEM-003 power sensor, a PT100 temperature sensor, a relay, and an Arduino Mega 2560. The measurement results were displayed on an LCD and recorded in Microsoft data streamer. The prototype was tested by comparing the temperature, voltage, and current with commercial instruments resulting in accuracy and precision of 99.97% (99.95%), 99.97% (99.86%), and 99.99% (99.86 %), respectively. Performance tests showed that the specific heats of canola, corn, and sunflower oils at 100°C based on DAQ data analyzed separately were 2.119 J/kg.°C, 2.082 J/kg.°C, and 2.458 J/kg, respectively. The specific heat values were close to those in the reference, with an accuracy of 94.22%, 97.29%, and 99.80%, respectively. Keywords: ATmega2560, DAQ, Heat capacity, Hysteresis, Vegetable oil
Production of Botanical Seeds and Shallot Boobs with Vernalization and Giberrylin (GA3) Treatment in Highland Areas Abubakar Idhan; Elkawakib Syam’un; Muh. Riyadi
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 1 (2023): March 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i1.201-211

Abstract

Vernalization and Gibberellin (GA3) solution can be applied to simultaneously increased shallot production and TSS (True Shallot Seed) in the highlands. The research aimed to obtain shallot varieties that are able to naturally flower more and have high growth and production. This research was carried out in the form of split plot experimental design. The main plots consisted of five shallot varieties selected from the adaptation test, which resulted from planting in the lowlands and highlands, namely the Bima Brebes variety (V1), Manjung variety (V2), Bauji variety (V3), Bangkok Jeneponto variety (V4), Mentes variety (V5). The sub-plots consisted of 4 stratifications of vernalization temperature, namely: room temperature (F1), 4°C (F2), 8°C (F3) and 12°C (F4). The sub-sub-plots consist ed of 4 concentrations of gibberellins GA3 in aquades, namely: 0 ppm (H1), 50 ppm (H2), 75 ppm (H3), and 100 ppm (H4). Each treatment was repeated three times, so as to obtain as many as: 5 x 4 x 4 x 3 = 240 experimental plots. Results showed that shallot varieties have different responses to vernalization and gibberellin GA3 treatment. No stratum of vernalization temperature and certain GA3 concentrations were found that consistently supported certain observational parameters on the growth and production of five shallot varieties. Manjung and Bauji varieties were observed as having great potential to produce more flowers and botanical seeds in highlands. Keywords: Giberrylin, Highlands, Shallot boob, TSS, Vernalization.
Development of Device for Pressure Control System in a Freezer of Pressed-Plate Type Surya Abdul Muttalib; Nursigit Bintoro; Joko Nugroho Wahyu Karyadi; Arifin Dwi Saputro
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 1 (2023): March 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i1.139-151

Abstract

The process of freezing foodstuffs can be done by using a cold metal plate that is in contact with the frozen material (contact plate freezing). The magnitude of contact Force Compressive applied needs to be controlled so as not to damage the frozen material. The purpose of this study was to develop and evaluate the performance of a Force Compression control system on a contact plate freezer. The Force Compression control system was composed of a load cell mounted on a Force Compression device, connected to a set of controllers consisting of an HX711 module, ATM Mega Arduino and a computer using the Borland Delphi 7 language. The results showed that the developed system was able to control the compression process of the equipment by turning off voltage input of the motor when the specified setting point has been reached. The results of Force Compression values when the motor in off position for the setting points of 50, 100, 150, 200, 250, and 300 kg.m/s2 were 58.25, 110.25, 162.67, 213.83, 264.55, and 317.61 kg.m/s2, respectively. There was a difference that gradually increased with increasing setting point value, where the real Force Compression values when the motor off were higher than the setting point values. The relationship between real Force Compression and setting point Force Compression could be given in the form of a linear regression equation y = 1.06897x + 6.14667 with a value of R2 = 0.99, RMSE 1,53 and MAPE 11,75 %. Keywords:   Arduino, Control system, Force Compression, Force Compression plate, Setting point
Drying Vanilla Using A Hybrid Dryer Warji Warji; Tamrin Tamrin; Sapto Kuncoro; Budianto Lanya; Hani Muzaqi
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 1 (2023): March 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i1.212-222

Abstract

Vanilla (Vanilla planifolia Andrew) is a plant that has high economic value; the plant is oriented for export. Postharvest handling is necessary to produce good quality vanilla; One of them is the drying process. This study aims to measure the drying time of vanilla, measure the decrease in moisture content, and analyze the efficiency of drying wet vanilla using a rack-type hybrid dryer. The research was conducted with three treatments, namely: drying using solar energy, drying using electrical energy, and drying using solar energy and electrical energy (hybrid). Based on the results of the study, it was found that drying using solar energy, drying using electrical energy, and drying using solar energy and electrical energy (hybrid) took 15 days, 17 days, and 13 days, respectively. The initial moisture content of drying is about 91.25% which decreases to about 32.44% at the end of drying. The efficiency of the three treatments was 6.39%, 1.58%, and 0.92%, respectively. Keywords: Drying, Hybrid postharvest, Vanilla
Reduction of Escherichia coli Contamination in Vannameii Shrimp (Litopenaeus vannamei) using Cassava Leaf Extract (Manihot glaziovii) and Noni Fruit (Morinda citrifolia L.) Vina Asfia Chori; Dewi Sartika; Sri Hidayati; Suharyono A. S.; Tanto P. Utomo
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 1 (2023): March 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i1.246-254

Abstract

This research is  study of  inhibition power between rubber cassava leaves extract (Manihot glaziovii) and noni (Morinda citrifolia l.) in reducing Eschericia coli contamination in vannameii shrimps (Litopenaeus vannamei). Cassava leaves contains flavonoids, saponins and tannins while noni contains antraquinone and scolopetin which has antimicrobial activity. This research aim at determine antimicrobial activity of cassava leaves extract and noni to inhibit Eschericia coli contamination in vannamei shrimps and determine the best formulation. The research use non-factorial complete randomized block design (RAKL) experimental design with three replications. The formulation in each treatment being used contained 25% (b/v) of the solvent. The treatments used in this study were M0S0 (control), M1S1 (25: 0), M2S2 (20: 5), M3S3 (15:10), M4S4 (10:15), M5S5 (5: 20), M6S6 (0:25) .Data were tested with the Barlett test and the Tuckey test to see the homogeneity. The data analysis was carried out using fingerprints to see the effect of treatment on the parameters being observed and followed with LSD test. The observations of research contained test of  amount Eschericia Coli, Antimicrobial Inhibition, Eschericia coli Total Decrease, Antimicrobial Activity Application, pH test, and Sensory Testing (Color and Appearance). The results of this research showed that the extract of noni was more effective in inhibiting the contamination of Escherichia coli in vannamei shrimps with an inhibition zone of 7.23 mm compared to cassava leaves with an inhibition zone of 0.43 mm.  The formulation has been obtained that the ratio between extracts of rubber cassava leaves and noni was  25%: 0% is best formulation to inhibit the microbial activity zwith the zone of inhibition is 7.23 mm.  Keywords: Vannameii Shrimps, Rubber Cassava Leaves, Noni, Escherichia coli
Extraction of Phenolic Total Compound and Determination of Antioxidant Activity of Cocoa Leaves Extracted Using Various Solvents Subekti Hartiningsih; Supriyanto Supriyanto
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 1 (2023): March 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i1.129-138

Abstract

In the cultivation of cocoa plants there are by-products, one of which is cocoa leaves. This by-product comes from periodic pruning of cocoa plants which has not been utilized optimally. Phenolic compounds contained in the cocoa leaves are known as bioactive compounds which also have a role as antioxidants. The content of bioactive compounds in cocoa leaves can be extracted from plant tissues by extraction method. The objective of this research was to achieve cocoa leaf extract with the highest antioxidant content using the maceration method. Extraction by maceration on old cocoa leaves with a variety of solvents, namely methanol, acetone, and ethyl acetate. The results showed that the extract of old cocoa leaves with methanol as a solvent showed the highest content of polyphenolic compounds. A yield of 7,129% was attained from old cocoa leaves with total phenolic content of 349,952 ± 0,051 mg EAG/g sample, EC 50 antioxidant value of 287,958 ± 0.144, and antioxidant activity of 86,928 % RSA. The yield of phenolic compounds and antioxidant activity contained in cocoa leaf extract (sequentially from the highest) were obtained with methanol solvent, followed by acetone and ethyl acetate solvents. Keywords: Antioxidant activity, Bioactive, Cocoa leaf, Methanol solvent, Yield 
Life Cycle Assessment of Organic Arabica Coffee Products Elida Novita; Mukhamad Edrin Irfani
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 1 (2023): March 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i1.186-200

Abstract

Upstream to downstream activities of organic Arabica coffee in Klungkung Village can cause environmental pollution and have the potential to be a contributor to increased greenhouse gases (GHG) and inefficient use of energy. On the upstream side, Arabica coffee cultivation activities use organic fertilizers, but the type and dosage of organic fertilizers are without proper knowledge. On the downstream side, it uses various technologies and produces various wastes that are not yet environmentally friendly. This study aims to determine how much the impact of processing organic Arabica coffee products on the environment can be reduced so that the product can be said to be feasible as an environmentally friendly product. The method used is Life Cycle Assessment (LCA) which has stages, goals and scope, life cycle inventory, life cycle impact assessment, and interpretation. Processing organic Arabica coffee products produces a GWP of 18.0589 kg CO2-eq, and the energy use efficiency shows a NER value of 0.03 and a NEV of -33.12. The recommended alternative improvements are making all solid waste into organic fertilizer and anaerobic handling of liquid waste to produce biogas which can be used as an alternative fuel to replace LPG in the roasting process. If the alternative recommendations for improvement are implemented, it can reduce the GWP value to 6.3514 kg CO2-eq and increase the efficiency of energy use consisting of NER values of 4.53 and NEV of 126.46.  Keywords:   Arabica, GWP, Energy, LCA, Organic

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