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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 23 Documents
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Search results for , issue "Vol 12, No 3 (2023): September 2023" : 23 Documents clear
Potential and Characteristic of Biomass Pellet from Tea Plantation Wastes as Renewable Energy Alternative Makbul Hajad; Sugeng Harianto; Joko Nugroho Wahyu Karyadi; Adhi Irianto Mastur; Muhammad Khais Prayoga; Heri Syahrian Khomaen; Elaine Faustine; Ivander Nainggolan; Fahmi Aryo Majid; Muhammad Hafidz Syahputra; Ganesha Afnan Adipradana
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 3 (2023): September 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i3.619-631

Abstract

Tea plantation biomass wastes, such as tea plantation pruning, shade trees, and woody weeds have not been utilized. The waste can be used as renewable energy in the form of wood pellets. The problem is the feasibility of biomass waste to be used as material for making wood pellets as energy. This paper aims to analyze the potential of tea plantation biomass waste as wood pellet material to meet energy needs. The research was conducted in a tea plantation owned by the Tea and Kina Research Center (PPTK). Quantification of biomass waste potential per unit area was conducted in the plantation using direct measurement method. Proximate analysis of each wood pellet variant of biomass waste was conducted to match the quality of Indonesian Wood Pellet Standard. The biomass waste potential in PPTK is 14,281 tons per year which can produce 8,186 tons of wood pellets per year. This potential can meet the needs of wood pellet consumption from the tea production process at PPTK which is around 1.8 tons / day for the tea processing process of 13 tons/day. Based on proximate analysis, the wood pellets produced have a calorific value of 4425 cal/gram, density of 1.35 grams/cm3, fixed carbon content of 85.2%, and volatile matter of 3.72%. These results confirm that the wood pellets comply with the National Wood Pellet Standard (SNI 8021:2014). This can be a model for the application of the Green Circular Economy concept in the plantation sector. Keywords:   Biomass pellets; Green circular economy; Renewable energy; Tea plantation waste; Wood pellets
The Effect of Various Concentrations of Both Lime Juice and Synthetic Citric Acid Solutions to Protect Capsicum frutescens L. against Yellow Leaf Curl Disease Rejo Wagiman; Yohanes Hendro Agus; Bistok Hasiholan Simanjuntak
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 3 (2023): September 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i3.676-683

Abstract

The yellow leaf curl (YLC) disease is one of plant disease generally found in chili pepper. The aim of the research was to know various concentrations of lime juice and synthetic citric acids to protect chili pepper (Capsicum frutescens L.) against YLC disease. The research used a randomized completely block design using seven treatments and three replications. The treatments tested were spraying lime juice of 0.1%, 0.2%, and 0.3% volume per volume (v/v); citric acid solution of 0.1%, 0.2%, and 0.3 % weight per volume (w/v). Control was used water only. The data result were analyzed using the honestly significant different test at the 95% confidence level. The treatment of both lime juice and citric acid solutions 0.2% and 0.3% could decreased whitefly population on chili pepper compared with control. The lime juice and citric acid solutions 0.3% was able to reduce the incidence and intensity of YLC disease. Lime juice and citric acid solution of 0.2% and 0.3% increased fruit numbers and fruit weights compared with control. The lower whitefly population decreased disease incidence of YLC (with regression Y = 5.7505x – 48.029). Intensity of YLC disease decreased fruit numbers and fruit weight (correlation value of -0.949 and -0.912). Keywords:  Citric acid, Chili pepper, Gemini virus diseases, Whitefly.
Testing Various Doses of Liquid Organic Fertilizer (LOF) on te Growth of Scallion (Allium fistulosum L.) Novianto Novianto; Wartono Wartono
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 3 (2023): September 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i3.738-744

Abstract

Scallion is one type of vegetable plant that is widely used as a flavouring or seasoning for dishes and other vegetable mixtures in several types of cuisine in Indonesia.  For this reason, one of the efforts that can be made to increase the production of scallions in meeting the consumption needs of the community is by means of technical cultivation through the application of liquid organic fertiliser (LOF).  The purpose of this study was to analyse the need for the right dose of LOF for scallions. This study used a non-factorial Randomised Group Design method by testing 6 treatment of LOF dose, namely: J1 = 1 ml/L water, J2 = 1.5 ml/L, J3 = 2 ml/L, J4 = 2.5 ml/L, J5 = 3 ml/L and J6 = 3.5 ml/L. Each treatment was repeated as many as 4 replications. The results from analysis of variance (ANOVA) showed that doses of LOF affected very significantly on the parameters of root length, root weight, wet stalk weight, and fresh shoot yield with the LOF dose of 1.5 ml/L water (J2) giving the best results. Keywords: Dosage, LOF, Root length, Shoot weight, Vegetable
Utilization of Crude Glycerol Waste from Biodiesel Production as an Additive to Improve the Quality of Tea Dreg Biopellet Lilis Sucahyo; Imelda Hellen ABR Sembiring; Dyah Wulandani
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 3 (2023): September 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i3.571-582

Abstract

Biodiesel production using the transesterification method generates a large amount of crude glycerol as by-products. Crude glycerol waste can be reused and utilized as an additive in the formulation of biopellet. Tea dregs are a waste produced by the beverages industry that can be used as green fuel in the form of biopellet as an environmentally friendly energy source. This study aims to analyze and characterize biopellet from tea dregs with crude glycerol as an additive to increase the quality. The biopellet formulation contains six levels of crude glycerol composition percentage: 0% (as control), 5%, 10%, 15%, 20%, and 25%. The parameters for the quality assessment of biopellet refer to the SNI 8675:2018 standard. The best formulation of biopellet was obtained in the 10% treatment with properties of density value of 0.93 g/cm3, pellet durability of 98.09%, moisture content of 8.10%, volatile matter content of 73.37%, ash content of 6.08% and calorific value of 16.38 MJ/kg. The addition of up to 10% crude glycerol as an additive has been shown to improve the quality of tea dregs biopellet. Keywords:  Additive, Biopellet, Crude glycerol, Tea dregs.
Response Surface Method Approach for Optimizing Roasting Condition in Robusta Coffee Cupping Test Quality Winarto Winarto; Chandra Utami Wirawati
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 3 (2023): September 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i3.610-618

Abstract

The Roasting process was an important step to generate good-quality roasted coffee beans. Two factors that affected coffee bean perfection were roasting time and temperature. An appropriate time and temperature will emphasize the greatest coffee bean aroma, color, and flavor, while the speed of the roasting process depends on the number of stirring fins in a roasted machine. The purpose of this study was to optimization time, temperature, and stirring fin number in the roasting process to generate the best cupping test roasted coffee beans. The Central Composite Design (CCD) was used in this study to determine Response Surface model. Minitab 17 and Design Expert 4.0 software used to determine the combination for all variables. Robusta green bean was taken from Kota Agung Timur, Lampung, which had density of 701—750 g/L. The result recommended roasted coffee bean was at 213oC for 16.7 minutes and used 3 stirring fins. This condition will generate cupping test score 84.92 which is define as Excellent in score notation criteria. CCD methods has develop an equation from optimal process to predict roasted coffee bean cupping test quality i.e., Y = 85.6 – 0.0088X1 – 1.2X2 – 11.06X3 + 0.000043X12 – 0.038X22 – 0.70X32 + 0.01000X1X2 + 0.0625X1X3 + 0.300X2X3. Keywords:   Cupping test, Response surface model optimization, Robusta coffee bean.
Moringa Growth Response in Treatment of Bokashi Composition and Dosage of Moringa Leaf (Moringa oleifera) Using Subsoil Nurlianti Nurlianti; Nurseha Nurseha; Ovian Ade Putra; Prihanani Prihanani; Farida Ariyani
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 3 (2023): September 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i3.665-675

Abstract

Subsoil soil which is at a depth of more than 30 cm below the topsoil is a marginal soil for agricultural cultivation but has great potential for utilization. Improvement of subsoil soil with the use of organic fertilizers alone has been widely carried out. However, the use of moringa leaf bokashi fertilizer is thought to be able to improve the subsoil physically and chemically. The aim of the research was to find out the composition of the best moringa leaf bokashi fertilizer and the right dosage for the growth of moringa. Research using Completely Randomized Design. The first factor was the composition of moringa leaf bokashi, biochar and cow manure (K), namely K1 ratio of moringa leaves: biochar: cow manure (1:1:1); K2: (2:1:1); K3 (3:1:1). The second factor is the dose of moringa leaf bokashi fertilizer. Bo: control 5; B1:10; B2: 20; B3: 30; B4: 40 tons per hectare. The results showed that the K1 composition showed the highest plant height, number of primary roots, and canopy wet weight. A dose of 10 tons per hectare (B1) showed the best growth of Moringa seedlings with the highest dry weight of canopy. Keywords:  Bokashi, Composition, Dosage, Moringa leaves, Moringa seedling
Degreening and Low Temperature Storage to Improve the Quality of Mandarin Orange Henny Nurpa Anggriani; Sutrisno Sutrisno; Slamet Susanto
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 3 (2023): September 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i3.721-737

Abstract

Several citrus species when physiologically ripe are still yellow-green in color, one of which is the Tangerine RGL (Rimau Gerga Lebong) grown in the city of Pagar Alam, South Sumatra. To improve the physical quality of tangerines, RGL can be applied with degreening technology and low-temperature storage. This study aims to examine the effect of degreening and low-temperature storage on physicochemical changes and to determine the optimum method of degreening and low-temperature storage on citrus quality. This study used a completely randomized 2-factor design. The first factor is degreening with 4 levels (0 ppm, 250 ppm, 500 ppm, 750 ppm), and the second factor is storage temperature with 3 temperature levels (10ºC, 20ºC, and room temperature). The results showed degreening increased the CCI value by 3.48-3.82, changing the skin color to uniformly yellow and did not affect the internal quality of the fruit. Treatment with a temperature of 10oC extended the shelf life of the fruit up to 29 days. The combination of 250 ppm ethepon and 10oC effectively suppressed weight loss to maintain the quality of RGL tangerines. Keywords: Degreening, Low-temperature storage, RGL tangerines, Shelf life, Uniform color
Design of Cartesian Type Manipulator for Automatically Capturing Plant Images Inside Greenhouse I Dewa Made Subrata; Jacklyn Melania
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 3 (2023): September 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i3.545-558

Abstract

Scientific activities often require large amounts of digital image data so it is required a device capable of capturing images automatically. This study aims to design a Cartesian-type manipulator with two translational movement for capturing and storing hydroponic plant images automatically and continuously. The manipulator is programmed to capture and store plant images from 15 different positions for seven consecutive days and two cycles a day, namely at 07.00 AM and 17.00 PM. The 2020 solid work simulation yields a maximum von Mises stress of 13,783 MPa, and a minimum safety factor of 6,869. The manipulator was tested using step period treatments of 0.002, 0.003, 0.004 seconds. The best test results is treatment of 0.002 seconds with an average of x-axis and y-axis positional error was 0.380 cm and 0.076 cm, the average translation speed was 8.96 cm/second. The positioning accuracy on the x-axis and y-axis is 98.9% and 99.8%. The movement stability is quite good around the set point with an error range on the x-axis and y-axis is -0.1 to +0.9 cm and -0.065 to 0.15 cm. System response less than 1 ms and energy consumption of 16,132 watt-hours/cycle. The manipulator is able to work according to the design objectives. Keywords:   Automatic, Continuous, Cartesian manipulator, Digital image, Hydroponic plants
Statistical Analysis of Changes in Physical and Chemical Parameters and Cooking Quality of Rice with a Combination of Temperature Treatment and Amylose Content During Storage Febriana Intan Permata Hati; Joko Nugroho Wahyu Karyadi; Nursigit Bintoro
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 3 (2023): September 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i3.777-794

Abstract

Rice is one of the staple foods produced in Indonesia. One of the postharvest processes experienced by rice is storage. During the storage process, rice changes cooking quality, physical and physicochemical qualities. This research aims to analyze changes in cooking, physical and physicochemical qualities of Indonesian rice varieties. The rice varieties used, namely Sintanur, Ciherang, and IR 42 were stored at storage room temperatures of 30˚C, 20˚C, and 10˚C. Rice taken from farmers was stored for 4 months and changes were measured for parameters of water content, color (chroma, hue, whiteness), amylose, elongation ratio, gel consistency, alkali spreading value (ASV), water absorption, and texture profile (packability, hardness, cohesiveness, extrudability, chewiness). The results showed that the lowest water content was at sintanur which was stored at 10 ˚C, namely 3.09% wb, elongation, and ASV increased with the highest final value at sintanur 30 ˚C, namely 2.07 and 4.45, the consistency of the gel decreased in the first week then stable in the following week, on the other hand, water absorption increased at the beginning of storage and did not change much until the end of storage. Statistical tests showed that there was an interaction between time*variety*temperature on the parameters of water content, whiteness, elongation ratio, water absorption, amylose, and chewiness. Based on the research results, it was found that several parameters did not interact with temperature, namely hue, packability, hardness, and extrudability. Keywords: Amylose content, Cooking quality of rice, Physical quality of rice, Rice storage
The Design of Automatic Soil pH Control System on Aloe vera Cultivation with an Integration of Internet of Things (IoT) Renny Eka Putri; Widi Darmadi; Dinah Cherie; Aninda Tifani Puari
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 12, No 3 (2023): September 2023
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v12i3.597-609

Abstract

Machine learning and internet of thing (IoT) would be the best option for monitoring the appropriate soil pH condition. This research aimed on the design an automatic soil pH control system based on IoT for monitoring the cultivation of Aloe vera plants. The Telegram application was occupied as an IoT platform and was connected to a free and easy access application, Node MCU 8266. Furthermore, relay, Arduino Uno and smartphone were occupied in the system. According to the system testing, soil pH sensor readings are close to the actual value as evidenced by the linear regression value or R2 on sensors 1 and 2 which are close to 1. Meanwhile, the total percentage of system performance testing was 93% while the error value for the pH sensors were 0.96 and 1.6% for sensor 1 and sensor 2, respectively. Furthermore, the plant observations showed that the average leaf length of plants with a control system was 24.78 cm while with the manual system was 23.11 cm. From the results of the T test obtained, it was found that the control system applied to Aloe vera cultivation had a significant effect on the growth and development of Aloe vera compared to Aloe vera plants with a manual system.  Keywords: Aloe vera, Control system, Internet of things (IoT), Soil pH sensor

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