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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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Cover Vol 12 no.2 June 2023 Haryanto, Agus
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 12 No. 2 (2023): June 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Minimize Oil Losses in Palm Oil Mill through Optimalization of Sludge Separator Performance Fadhilah, Nabillah Nissya; Safitri, Lisma; Alfian, Ulil Albab; Dharmawati, Nuraeni Dwi; Renjani, Rengga Arnalis
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 1 (2024): March 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i1.123-131

Abstract

One of the most important clarification station engine parts for reducing oil loss is the sludge separator. The sludge separator uses high-speed centrifugal force to capture any oil that is still adhered to the sludge. This study aims to improve the working performance of sludge separator to minimize oil losses through variations in feeding rate, oil under flow and temperature of flow rate. The experiment was conducted at one of the palm oil mills in Central Kalimantan, with a capacity of 45 ton/h. Variations in sludge separator feed rates: 23, 25 and 27 tons/hour. Oil underflow variations: 5%, 6%, and 7%. Feed temperature variations are: 90°C, 93°C, and 95°C. Feed temperature variations:  90°C, 93°C, and 95°C. Based on research that has been done, using bait rate of 23 ton/h, temperature 90 °C, and oil underflows 5%, resulting in oil losses of 0.54% – 0.61%. This study has managed to lower oil losses in the sludge separator by 0.11 % and shows the level of stability below the standard that has been determined. Keywords:  Crude palm oil,  Oil losses,  Palm oil mill,  Sludge separator, Underflow
The Effect of Fermentation Time on The Quality of Mocaf (Modified Cassava Flour) with Raw Material Bokor Genotype Cassava Prastiwi, Erfa Kurnia; Fatoni, Rois; Fathoni, Ahmad; Setiarto, R. Haryo Bimo; Damayanti, Ema
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 1 (2024): March 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i1.12-26

Abstract

Cassava genotype Bokor has a fairly high content of beta carotene, which is beneficial for health and can also support the development of the functional food industry. MOCAF (Modified Cassava Flour) is a product made from cassava flour which is processed by modifying cassava cells through fermentation. This study aims to analyze the effect of long fermentation time on the characteristics of MOCAF from beta-carotene-rich cassava genotype Bokor. In this study, three variations of fermentation time were used, namely 15 hours, 24 hours and 40 hours. The research results showed that the time of fermentation affected the physicochemical properties of MOCAF. NIR analysis showed that the fermentation time affected the chemical composition of MOCAF. At 40 hours (last time of fermentation), there was a decrease in fat content with a value of 1.59% and an increase in water, protein and fibre content with a value of 13.71%, 3.94% and 2.28%, respectively. Proximate analysis showed that there was an effect of the length of fermentation time on the MOCAF content, namely at 40 hours, there was an increase in water content with a value of 10.10%, a decrease in dry matter, ash, protein, fat, fibre with a value of 89.90%, 0.60%, 0.78% respectively, 0.45%, and 1.29%. Scanning Electron Microscope (SEM) analysis shows the effect of fermentation time on the morphological properties of MOCAF starch granules. The longer the fermentation time, the more perforated or damaged the surface of the starch granules. Keywords:  Fermentation time, MOCAF flour, NIR (Near Infrared), Proximate, SEM (Scanning Electron Microscope) 
Land Use and Land Cover (LULC) Change in Eastern Areas of East Java From 1972 To 2021: Learning From Landsat Image Mandala, Marga; Indarto, Indarto; Mas'udi, Ach. Fauzan; Saputra, Akhmad Andi
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 12 No. 4 (2023): December 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i4.1022-1035

Abstract

Urban development, population growth, high traffic jams, and intensive disaster events are indicators of changing the landscape of the eastern area of East Java. Investigating these changes is vital for planning and environmental protection in the future. This study examines changes in land use and land cover (LULC) during the past 50 years in the eastern part of East Java from 1972 to 2021. The changes are examined by contrasting four maps derived from Landsat images (1972, 1997, 2013, and 2021). The following are the main study procedures: (1) data inventory, (2) field survey, (3) image processing and classification, and (4) interpretation of LULC changes. With Google Earth Engine, all photos are downloaded (GEE). Landsat image classification was completed using the maximum likelihood algorithm with an overall Kappa accuracy of>85%. Eight (8) major classifications are therefore produced by the classification: (1) the pavement or urban area (PUA); (2) heterogeneous agricultural land (HAL); (3) bare soil (BS); (4) paddy field (PF); (5) open water body (OWB); (6) vegetation/plantation (VG); (7) shrubland (SL); and (8) wetlands (WL). In the areas with rapid development, the LULC change is more pronounced, i.e., Pasuruan, Jember, and Banyuwangi Regencies. LULC change in and near mid-regency and the rural regions comes next. Over the past fifty years, regional growth has resulted in increases in PUA (+4.4 percent), PF (+12.2 percent), and VG (+17.9 percent). On the other hand, the development has decreased SL, BS, and HAL by 5.8 and 15.9 percent, respectively (-13.1 percent ). LULC alterations for human activities have profoundly altered the natural landscape. Keywords:  East Java, GEE, Image Processing, Landsat, LULC
Resistance Analysis of Padi Gogo Merah (Oryza Nivara L) Against Blast Disease Noer, Zulheri; Mudsan, Deni; Aziz, Rizal; Candra, Ifan Aulia
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 1 (2024): March 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i1.37-48

Abstract

Rice Blast has been known as the main disease on paddy which has high severity leading to economic loss. Exploring rice resistance can be an effective way to improve productivity and prosperity toward this staple crop. This study aims to determine several local varieties which have potential for productions and resistances. This study used factorial randomized block design (RBD) consisting of 2 factors including plant spacing (25 x 25 cm; 25 x 30 cm; 25 x 40 cm); Upland rice variety MSP 17, Sigambiri Merah, Hamparan Perak and Kambiri Lumat. The results of the study reveal that variety has a significant effect on disease intensity especially Sigambiri Merah but not on Kembiri Lumat. However, there is no significant effect of spacing on blast intensity except in grain weight. Conclusion of this research was the varieties (V) selection of red upland rice is the best strategy to improve rice resistance toward blast disease. Keywords:  Disease density, Paddy, Staple Crop. 
Consumption of Energy and AB Mix Nutrition in A Controlled Verticulture Hydroponic Applications of Curly Red and Green Lettuce Agustina, Hilda; Angraini, Dika Tri; Putri, Veby Angela; Kuncoro, Endo Argo; Tunggal, Tri; Harmanda, Fidel
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 2 (2024): June 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i2.418-428

Abstract

The green lettuce and Curly red lettuce have a high potential to be developed as commercial crops on limited land with verticulture cultivation system. The use of this cultivation system must be supported by adequate nutrients and water in addition to optimal environmental conditions. By using the vertical hydroponic plant cultivation method will increase the growth of Curly red and green lettuce plants. The method used is an experimental method and the data is processed using polynomial analysis method and descriptive method. The observation parameters in this study consisted of main parameters (flow rate, power requirement, energy requirement, and water pressure calculation). In addition, supporting parameters were evaluated including plant height, leaf count, fresh weight of plants, plant productivity, and harvest yield. Data were analyzed using descriptive and regression methods. The power requirement used from the initial stage of transplanting to harvest is 640.8 W. The total energy requirement used from the initial planting process to the harvest process is 2563.2 Wh. The average AB mix requirement of each stage of plant is 972.0 ppm; 1231.9 ppm; 1158.1 ppm; 1092.4 ppm. Flow rate is directly proportional to temperature; if the temperature increases, the flow rate for nutrients will increase, and if the temperature decreases, the flow rate will decrease for the fertigation system. Keywords: Energy, Hydroponic, Lettuce, Nutrition, Verticulture cultivation.
Exploration and Optimization of Potential Fungi to Degrade Herbicides with Active Ingredient Isopropylamine Glyphosate from Shallot Plantations by In Vitro Karim, Hilda; Sahribulan, Sahribulan; Adawiyah, Rhidoyatul
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 2 (2024): June 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i2.309-318

Abstract

This research was conducted by isolating potential fungi from soil samples exposed the herbicides with the active ingredient of isopropylamine glyphosate (IAG) and then testing the degradation ability of the obtained fungal isolates. The results showed 15 isolates fungi obtained from the soil to a depth of 10 cm including Aspergillus sp. with black, green and yellow colonies, Cladosporium sp., Penicillum sp., Rhizopus sp., Mucor sp., Cephalosporium sp., Phymatotrichum sp., Pytopthora sp., Curvularia sp., Microsporum sp., Colletothricum sp., Acremonium sp., Tricophyton sp. and 4 isolates from soil samples with a depth of 20 cm, namely Chrysosporium sp., Geotrichum sp., Aspergillus sp. with black and green colonies. However, after testing for the presence of herbicides with concentrations of 10 ppm, 20 ppm, and 30 ppm, only 2 isolates were able to survive, namely Aspergillus sp with black and green colonies. Further testing on the ability to degrade the IAG was found to reduce the concentration of herbicide. The optimum biodegradability to IAG of Aspergillus sp. green and black found in P20 (20 ppm) treatment at the 5th day of incubation, namely 98.69 ppm for Aspergillus sp. green, and 96.11 ppm for Aspergillus sp. black. Keywords: Aspergillus sp., Biodegradation, Fungi, Herbicide, Isoprofile amine glyphosate.
Effect of Variations of Roasting Temperature on the Physicochemical Properties of Robusta Coffee (Coffea canephora L.) Ramanda, Muhammad Rizky; Prameswari, Azzahra Fali; Ulfa, Masayu Nur
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 2 (2024): June 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i2.405-417

Abstract

Robusta coffee has become the most planted coffee in Indonesia and a vital commodity. Robusta coffee is characterized by a more caffeine content, bitter taste, and slightly more acidic compared to that of Arabica coffee. The roasting process is important factors contributing to shape taste, aroma, and the physical characteristics of coffee beans. This study seeks to compare the physicochemical properties of Robusta coffee originated from West Lampung and Tanggamus, and to assess the impact of roasting temperature (light at 190°C, medium at 200°C, and dark at 210°C). Measurement was conducted in duplicate. The findings indicated significant differences (p<0.05) in ash content, moisture content, and pH between coffee from West Lampung and Tanggamus, while color and caffeine content did not differ significantly (p>0.05). The geographic origin of coffee beans influences their physicochemical properties. Moreover, all examined parameters (ash content, moisture content, pH, color, and caffeine content) show a direct relationship with the roasting temperature. Consequently, roasting temperature plays a pivotal role in shaping the physicochemical properties of coffee beans. Keywords: Caffeine, Coffee, Region, Roasting, Temperature.
Evaluation of The Chemical Properties, Chewiness Level, and Sensory of Yellow Pumpkin (Cucurbita moschata) Jelly Candy in Various Ratios of Caragenan and Gum Arabic Astuti, Sussi; Nawansih, Otik; Hidayati, Sri; Anggraini, Octavia Sopha
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 1 (2024): March 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i1.178-187

Abstract

This study aims to determine the effect of carrageenan and gum arabic formulations on chemical properties, level of elasticity, and sensory properties of pumpkin jelly candy and to obtain the right formulation of carrageenan and gum arabic to produce good quality jelly candy. The study was arranged in a Completely Randomized Block Design with a single factor and 4 replications. The treatment was the ratio of carrageenan and gum arabic consisted of 5%:0% (K1), 4%:1% (K2), 3%:2% (K3), 2%:3% (K4), 1%:4 % (K5). The data obtained were analyzed for homogeneity with the Barlett test, ANOVA, and the Tuckey test at the 5% level.  Determination of the best treatment for pumpkin jelly candy was determined by the De Garmo method.  The results showed that the best jelly candy was the K3 treatment (3% carrageenan; 2% gum arabic) which resulted in a texture score of 3.80 (chewy), color with a score of 3.97 (dark yellow), taste with a score of 4.11 (like ), water content of 7.66%, ash content of 0.99%, reducing sugar content of 14.31%, and sucrose content of 27.7%.  Formulation of carrageenan and gum arabic significantly affected the chemical properties, level of elasticity, and sensory properties of pumpkin jelly candy. Keywords: Gum Arabic, Carrageenan, Jelly candy, Pumpkin.
Effect of Light Intensities and Nitrogen Fertilizer Dosages on Growth, Phenolics, and Flavonoid Production of Adenostemma lavenia Shafira, Anisya Elsa; Aziz, Sandra Arifin; Farid, Muhammad; Ridwan, Taopik; Batubara, Irmanida
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 1 (2024): March 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i1.114-123

Abstract

Adenostemma lavenia (Asteraceae) is a medicinal plant considered a weed, consisted a lot of secondary metabolites, including phenolic and flavonoid. This species has been widely distributed in various countries but has yet to be widely cultivated. Thus, this study aimed to determine the highest plant growth, phenolic, and flavonoid production from A. lavenia cultivated under different shade of nitrogen fertilizers. The experiment used a nested design consisting of 2 factors. The first factor was shade with different intensities (0, 25, 50, and 75%) and the second was nitrogen fertilizer with different doses (0, 45, and 90 kg/ha). The highest plant was achieved at 50% shade level, while the highest leaf number and branch were 25% and 0%, respectively. Leaf thickness and stomata number increased in no-shade conditions. The production of phenolics and flavonoids was high under shaded conditions, supported by significantly high phenolics and flavonoid total under shade conditions, i.e., 35.94 mol gallic acid equivalent/plant and 21.76 mol quercetin equivalent/plant, respectively. A 90 kg/ha nitrogen fertilizer dose produced the best plant growth, phenolic, and flavonoid production. Keywords: Asteraceae, Heatmap, Nested design, Shade.

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