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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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Structure and Composition of Tree Vegetation in the High Conservation Value Area of Oil Palm Plantations Suratni Afrianti; Enni Halimatussa'diyah Pakpahan
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.v13i3.805-816

Abstract

The expansion of oil palm plantations is considered a major factor in the decline of tropical forest areas, and negatively impacting biodiversity, especially tree vegetation. This study aimed to identify tree vegetation types and the structure and composition of trees in two oil palm companies, namely PTPN IV and PTPN III. Identification of forest areas was performed by collecting data from the plantations, and processed tree species data using the quadrat method and calculated using the Shannon-Wiener and Simpson's diversity indices. Results showed that tree species with the highest Importance Value Index is Koompasia excels with a percentage of 92.95%, Shorea sp (56.7%), and Koompasia malaccensis (69.32%). Based on tree height, stratum A (>30 m) dominated in PTPN IV with 840 individual/ha, while in PTPN III-1 stratum B (20-30 m) dominated with 330 individual/ha. There were 600 individual/ha in PTPN IV with diameter class of 10-29 cm, 250 individual/ha with diameter class of 30-49 cm in PTPN III-1, and 220 individual/ha with 30-49 cm diameter in PTPN III-2. The highest Shannon-Wiener diversity index (2.148) was found in PTPN III-2, and the highest Simpson's dominance index (0.187) was found in PTPN IV. An inverted "J"-shaped curve indicated that the forest area had a good stand structure, with more small-diameter trees than large-diameter ones. Keywords: High Conservation Value, Importance Value Index, Shannon-Wiener Index, Simpson's Index of Oil Palm. 
Increasing Plant Growth and Yield of Tomatoes (Solanum lycopersicum L.) by Providing Chicken Manure and Hormonics Agusalim Masulili; Sri Rahayu; Sutikarini Sutikarini
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.v13i3.873-879

Abstract

Tomato cultivation in alluvial land requires treatments to increase productivity. The research aimed to determine the effect of interaction between chicken manure and hormonal fertilizer application on the growth and yield of tomato plants in alluvial soil. This research was conducted at the greenhouse of the Faculty of Agriculture, Science, and Technology, Panca Bhakti University from April to July 2023. A Completely Randomized Design (CRD) with a factorial pattern was employed. The treatments consisted of 2 factors. The first factor was chicken manure with 3 levels: a1= 20 g/polybag, a2= 40 g/polybag, a3= 60 g/polybag. The second factor was hormonal fertilizer with 3 levels: h1= 2 ml/l, h2= 3 ml/l, h3= 4 ml/l. The results showed that there was no interaction effect between the application of chicken manure and hormonal fertilizer on all observed variables, as well as the application of chicken manure alone. The application of hormonal fertilizer significantly affected all observed variables including plant height, number of branches, number of fruits, and fruit weight. The treatment level h2 (3 ml/l) yielded the highest result in plant height at 113.26 cm. The highest number of branches, number of fruits, and fruit weight were observed at the h3 level (4 ml/l) with values of 3.39 branches, 2.57 fruits, and a fruit weight of 86.10 grams, respectively. The treatment level h1 (2 ml/l) yielded the lowest result. Keywords: Alluvial Soil, Horticultural Commoditie, Organic Fertilizer.
Classification of Roasting Level of Coffee Beans Using Convolutional Neural Network with MobileNet Architecture for Android Implementation Isran Mohamad Pakaya; Radi Radi; Bambang Purwantana
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.v13i3.924-932

Abstract

The roasting process has a significant impact on the aroma profile and taste of coffee making it an essential stage in the coffee processing. Currently, the classification of coffee bean roasting levels still relies on subjective human visual assessment, which can lead to errors due to fatigue or negligence. To overcome this problem, a classification system was developed using computer vision technology with a deep learning approach. The present study designed a coffee bean roasting level classification system based on image analysis integrated within an Android application. The Convolutional Neural Network (CNN) model with the MobileNet architecture was used to identify and classify coffee beans based on their roasting level. Two CNN models, namely CNN Alpha and CNN Beta were used in this study. The dataset included 1.600 coffee bean images, with 1.200 images used to train the model and 400 images used to test the accuracy. In this experiment, the input image had an optimal size of 70x70 pixels, a learning rate of 0.0001, and 100 epochs for both models. The model training and testing results in the highest accuracy of 98-88% in 6.40-0.0012 minutes.The application test results obtained 93.55% accuracy, 97.06% precision, and 96.67% recall. These results indicate that this model and application function optimally in classifying coffee bean roasting levels accurately. Overall, this study reveals the potential of integrating CNN with the MobileNet architecture into an Android-based application to change the way of roasting level classification, as well as to improve efficiency and accuracy. Keywords: Coffee, Roasting, Convolutional Neural Network, MobileNet, Android.
Implementation of A Traceability System for Canned Fish Products using The FMECA Approach Jihan Nisrinah Berliana; Budi Hariono
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.v13i3.863-872

Abstract

PT. XYZ is a company that operating in the canned fish processing sector. In implementing the traceability system, traceback product still experiences obstacles so it cannot be implemented properly in the Company. This research was conducted to determine the traceability critical point which is a weakness of the traceability system being implemented. The method used is the FMECA (Failure Modes, Effects, and Criticality Analysis) approach, which is a development of the FMEA (Failure Mode Effect Analysis) method with the inclusion of the CA (Criticality Analysis) method to evaluate the effective level and efficiency of the traceability system being implemented. The results of the analysis showed that 43 possible failure points were identified, of which 2 points were in the unacceptable area, 3 points were in the undesirable area, 12 points were in the acceptable with revision area, and 26 points were in the acceptable without revision area. Traceability of canned fish products at fish canning companies has been going well with 5 critical points of traceability, namely the absence of information on the origin of the fish, not providing special coding for each fish received, not carrying out microbiological testing on the fish received, each fish received is not differentiated. The storage location is between each supplier, and no special records are made at the draining stage. Keywords: Critical analysis, Failure, FMECA, Traceability, Quality assurance.
Stability of Pure Biodiesel (B100), Biodiesel Mixture (B40), and Petroleum Diesel (B0) Due to Storage Zunanik Mufidah; Amril Hakim Tiguna; Agus Haryanto
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.v13i3.900-913

Abstract

Biodiesel is produced from synthetic ester compounds of vegetable and animal oils through a process of refining, bleaching, degumming, transesterification, and esterification. The quality and characteristics of the fuel are greatly influenced by the storage. The purpose of this research is to determine and analyze the effect of storage conditions on the physical and chemical changes of biodiesel (B100), biodiesel blend (B40), and petro diesel (B0). Experiment was conducted by storage fuels using glass bottle for 35 days arranged into four conditions based on cap and wrapping using aluminum foil, namely P1 (with cap, with wrapping), P2 (with cap, no wrapping), P3 (no cap, with wrapping), and P4 (no cap, no wrapping). Results showed that fuel quality decreases due to storage indicated by an increase in water content, density, acid number, and color parameters, as well as a decrease in the specific calorific value of all fuels. The condition of the storage container affected the changes the quality parameters. Based on its impact on fuel quality decline, the order of storage container conditions from the best is P1 (with cap, with wrap) > P2 (with cap, no wrap) > P3 (no cap, with wrap) > P4 (no cap, no wrap). Keywords: Biodiesel, Biodiesel blend (B40), Diesel fuel, Stability, Storage time.
Thermoplastic Starch Film Made from Cellulose to Extend the Shelf Life of Red Chilies Vonny Indah Sari; Anania Rahmah; Vivin Jenika Putri; Hanifah Ulfa Azzahro; Lukman Hakim Nasution
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.v13i3.839-850

Abstract

Thermoplastic starch (TPS) is a biofilm made from starch and cellulose. The advantage of thermoplastic starch is easily degraded. TPS has weaknesses in high water affinity and low mechanical properties, so it is necessary to add polyvinyl alcohol (PVA) in making TPS packaging. The mechanical properties of TPS-PVA can be further improved by modifying it into a composite with coconut fiber cellulose. This research was purposed to produces a film containing cellulose from coconut fiber as a reinforcing material for film composites as well as to evaluate the biodegradation properties of the resulting film. It is known that the addition of 5% w/v coconut cellulose fiber is the formulation with the best yield when compared with the 1% and 3% w/v formulations. Applying TPS film to chilies can increase the shelf life of chilies. As a product that spoils quickly, one of the efforts made to maintain the quality of chilies is to use packaging made from TPS. Storing chilies at different temperature conditions using TPS-PVA film packaging with the addition of 5% w/v coconut fiber cellulose was able to maintain the shelf life and quality of chilies for 19 days at cold temperatures. Keywords: Chilies, Cellulose, Thermoplastic starch
Effect of Benzylaminopurine (BAP) and Coconut Water on the Growth of Bucephalandra sp. in Vitro Alfira Damayanti Septianingsih; Makhziah Makhziah; Sukendah Sukendah
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.v13i4.1013-1022

Abstract

Tissue culture is useful as a way to obtain seeds in large quantities of seedlings in a short time as an effort to preserve Bucephalandra sp. in nature. The use of PGR has problems such as expensive prices and difficult to find, therefore its use can be replaced by natural PGR that are easy to obtain and have relatively cheap prices such as coconut water. The aim of this research was to determine the effect of Benzylaminopurine (BAP) and coconut water on the growth of Bucephalandra sp. in vitro. This research is a 2-factor factorial experiment using a completely randomized design. The factors are concentration of BAP (0; 1; 3; 5 mg/l) and concentration of coconut water (0; 50; 100 ml/l). The results showed Murashige and Skoog (MS) media with the addition of BAP 1 mg/l + coconut water 50 ml/l (4.11 shoots), BAP 5 mg/l + coconut water 50 ml/l (4.33 shoots), and BAP 3 mg/l (6.22 shoots) were able to provide the number of shoots with high results. The addition of coconut water did not affect the growth of Bucephalandra sp. MS media can grow shoots with the best results in measurements of shoot emergence time, number of roots, shoot and root length. Keywords: Aquatic plant, Endemic plant, Plant growth regulators, Tissue culture.
Constructing Brand Image and Product Quality in the Tea Industry: A Strategy to Increase Customer Loyalty through Customer Satisfaction Novi Setyaningrum; Budi Setiawan; Dwi Retno Andriani
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.v13i3.951-965

Abstract

The food and beverage industry, including Teh Botol Sosro products in Bojonegoro, contributes to greenhouse gas emissions, making it important to improve tea leaf quality through bioactivity and plant conservation. This study aims to prove that Teh Botol Sosro's brand image and product quality significantly influence customer satisfaction and loyalty. Using a quantitative design and SMARTPLS with 100 respondents, the results show that brand image (X1) has a direct effect of 33.40% on customer satisfaction (Z), while product quality (X2) has a direct effect of 46.50%. Customer satisfaction (Z) itself has the greatest impact on customer loyalty (Y) at 80.10%. Brand image and product quality also have an indirect effect on customer loyalty through satisfaction, with path coefficients ranging from 26.8% to 37.3%. In conclusion, PT Sinar Sosro should strengthen brand image and product quality to enhance customer loyalty through customer satisfaction. Keywords: Bioactivity; Increase loyalty; Sosro tea; Strengthening the brand image.
Evaluating the Antioxidant Activity and Stability of Pigmented Rice Extract Tagor M Siregar; Daniel C Miarsa
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.v13i4.1036-1050

Abstract

This study aims to evaluate the antioxidant activity and stability of the extract of pigmented rice. Pigmented rice powder from 6 different varieties including Subang, Jowo Melik, Andel Abang, Bukittinggi, Cempo Merah, and Cempo Ireng) was macerated using ethanol with concentrations of 96% and 70%. Next, the rice extract was tested for stability to pH (1, 3, 5, 7, 9) and temperature (20°, 40°, 60°, 80°C). Results revealed that extract of Subang black glutinous rice using 96% ethanol resulted the highest antioxidant activity of 11.11±2.04 mg FeSO4/g, with an overall anthocyanin, flavonoids, phenolic contents of respectively 28.22±1.14 mg CE/g, 2.91±1.13 mg QE/g, and 3.46±1.59 mg GAE/g. The physiochemical properties of the rice extract were affected by the difference of pH. The increase in pH resulted in a decrease in antioxidant activity, total anthocyanin, and the values of color attributes (L*, a*, b*, C*, and ºHue) of the rice extracts. Temperature did not affect the physiochemical properties of the extract. The antioxidant activity, total anthocyanin, and color attributes of the rice extract were typically stable when the temperature rose from 20°C to 80°C. The extract at pH 1 and 80ºC treatment exhibited slightly higher yield based on antioxidant activity, total anthocyanin content, a* value, and ºHue with the values of 16.92±1.73 mg FeSO4/g, 33.90±2.33 mg CE/g, 21.55±0.54, and 30.04±0.57, respectively. Keywords: Anthocyanin, antioxidant activity, pH, pigmented rice, temperature.
Environmentally Friendly Paving Block Based on Wood Waste: The Effect of Rubber Wood Waste Content on the Physical-Mechanical Properties of Paving Block Fauzi, Daffa Naufalian; Saputra, Bagus; Riniarti, Melya; Duryat, Duryat; Suri, Intan Fajar; Hidayat, Wahyu
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.v13i4.997-1005

Abstract

The wood sawing industry generates significant waste, consisting of wood chips, wood scraps, and sawdust. This research aims to evaluate the effect of rubber wood sawdust addition on the moisture content, water absorption capacity, and compressive strength of paving blocks. The study was conducted in August–September 2023, starting with preparing raw materials, composition planning, and test specimen fabrication. The parameters in this study included density testing, moisture content, water absorption capacity, and compressive strength. The density test results for treatments P0 were 1.11 g/cm3, P1 1.09 g/cm3, P2 1.07 g/cm3, P3 1.08 g/cm3, and P4 1.09 g/cm3. The moisture content test yielded values of 11.38% for P0, 12.56% for P1, 12.94% for P2, 13.24% for P3, and 13.80% for P4. The water absorption capacity values obtained were, for P0, 5.17%; P1, 5.40%; P2, 6.36%; P3, 8.11%; and P4, 9.27%. Compressive strength tests produced values for P0 at 7.19 N/mm2, P1 at 5.67 N/mm2, P2 at 4.22 N/mm2, P3 at 3.48 N/mm2, and P4 at 3.07 N/mm2. The addition of rubber wood sawdust to paving blocks significantly influences density, moisture content, water absorption capacity, and compressive strength values. Keywords: Composition, Compressive strength, Paving block, Sawdust waste.

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