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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 24 Documents
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Search results for , issue "Vol 12, No 4 (2023): December 2023" : 24 Documents clear
Cover Vol 12 No 4, December 2023 Agus Haryanto
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

Abstract

Detection of Formalin Content in Chicken Meat Using Portable Near Infrared Spectrometer Agita Rakhmawati; Yohanes Aris Purwanto; Slamet Widodo; Dewi Apri Astuti
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.v12i4.831-839

Abstract

Food safety is essential for consumers. One of the compound that are prohibited from being used to preserve chicken meat is formalin. It demands a fast classification and sorting process for chicken meat, whether it is processed further or not. The main objective of this research is to develop a model that can predict the formalin content of chicken meat at room temperature using a portable NIR spectrometer. The NIRS method utilizes electromagnetic waves in infrared radiation with wavelengths ranging from 740-1070 nm. The method used to process the data is partial least square discriminative analysis (PLS-DA) to determine the presence of formalin in chicken meat. The results showed that the best pre-treatment was using the 1st derivative which had calibration results with an accuracy value of 92.86%, sensitivity 94.05%, specificity 91.67%, and FPR 8.33%. While the validation results obtained an accuracy value of 92.86%, sensitivity 92.86%, specificity 92.86%, and FPR 7.14%. Keywords: Chicken meat, formalin, NIRS, non-destructive method, PLS-DA.
Land Suitability Assessments for The Palm Plantation (Arenga pinnata L.) As Non-Timber Forest Product Using Geographic Information System Athiyyah Faadhilah Faadhilah; Mahawan Karuniasa; Sri Setiawati Tumuyu
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.v12i4.957-967

Abstract

The use of sugar palm plants as a producer of palm sugar, which is a non-timber forest product (NTFP) is considered not optimal and has the potential to be cultivated. Assessing land suitability is necessary for assessing the potential of land resources to provide information and production values. This study aims to analyze land suitability for sugar palm plantations as measured by climate, land physical properties, and a combination of these parameters. The research was conducted in Baru Ranji Village, Merbau Mataram District, South Lampung Regency, using spatial analysis methods through the use of overlay, matching, and scoring techniques through the Geographic Information System (GIS). The results showed that climatic parameters become limiting factors and only shift the level of land suitability and when combined with the physical parameters, the land was suitable for sugar palm cultivation. The use of agroforestry system in social forestry for sugar palm cultivation can increase economic and environmental conservation value. Keywords:   Agroforestry, Conservation, Cultivated, Palm sugar, Social Forestry
The Use of Rice Harvest Residue as Soil Amendment for Growth and Yield of Rice (Oryza sativa L.) on Acid Sulfate Soil Agus Suyanto; Sri Rahayu; Agnes Tutik Purwani Irianti; Rini Suryani
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.v12i4.968-978

Abstract

The area of rice fields in Indonesia decreased every year. Acid sulfate soil, which was sub-marginal land, had the potential to be converted into rice fields, but it needed improvement, one of which was by using organic materials as ameliorants. This research aimed to obtain the best composition of applying rice harvest residue as an ameliorant on acid sulfate soil in improving the growth and yield of rice. The research was conducted at the greenhouse of Panca Bhakti University Pontianak from January to April 2022. This study used a Completely Randomized Design (CRD). The treatments consisted of: p0: Control, p1: Rice straw = 40 gr/polybag, p2: Rice husk = 40 gr/polybag, p3: Rice husk charcoal = 40 gr/polybag, p4: Rice husk ash = 40 gr/polybag, p5: Rice straw + rice husk, p6: Rice straw + rice husk charcoal, p7: Rice straw + rice husk ash, p8: Rice husk + rice husk charcoal, p9: Rice husk + rice husk ash, p10: Rice husk charcoal + rice husk ash, with each material weighing 20 gr/polybag. The observation variables were plant height, number of tillers, number of productive tillers, dry weight of grains per hill, and 100-grain weight. Analysis of variance used F-test and continued with Least Significant Difference (LSD) test at the 5% level. The application of rice harvest residue had a better effect on the growth and yield of rice than the treatment without the application of rice harvest residue. Treatment p6 had the best effect on the dry weight of grains per hill, which was 65.67 grams. Keywords:   Acidic Sulfate Soils, Ameliorant, Rice, Rice husk charcoal, Straw
The Effect of Application of Low-calorie Sugar on Chemical, Physical, and Organoleptic Characteristics of Red Dragon (Hylocereus polyrhizus) Fruit Syrup Dinda Sukma Wibowo; Maria Marina Herawati
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.v12i4.1010-1021

Abstract

Syrup is a thick sugar solution with or without the addition of permitted food additives. Syrup usually uses high calorie cane sugar which can trigger obesity if it is not balanced by physical activity. This study aimed to determine the effect of low-calorie sugar application on chemical characteristics (including pH, vitamin C, reducing sugars, betacyanin), and physical characteristics (total dissolved solids) and organoleptic (including aroma, taste, color) in red dragon fruit syrup. The experiment was designed following randomized block design (RBD) with one-factor treatment, namely the concentration of sugar consisted of 5 treatments (K1: 3%, K2: 6%, K3: 9%, K4: 12%, K5: 15 %). Each treatment was repeated 5 (five) times to obtain 25 experimental units. The results showed that the application of low-calorie sugar significantly affected the syrup's chemical characteristics, namely reducing sugar. They had a significant effect on the physical characteristics of the syrup, namely the total dissolved solids. However, it did not significantly affect pH, vitamin C, and betacyanin levels. From the organoleptic test, the panelists liked red dragon fruit syrup the most, with a concentration of 15% for each organoleptic parameter, including aroma, taste, and color. Keywords:   Low-calorie sugar, Obesity, Organoleptic, Red dragon fruit, Syrup
Study of Coffee Bean Displacement Inside Drum Roaster Using Force Balance Analysis Hasbi Mubarak Suud; Noer Novijanto; Rufiani Nadzirah; Dyah Ayu Savitri
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.v12i4.909-920

Abstract

The drum roaster's design and operating method significantly affect the coffee roasting process. The coffee bean displacement inside the drum roaster can be observed to compare the drum roaster's different designs and operating methods. The coffee bean movement is crucial since it affects the heat transfer distribution among coffee beans inside the drum roaster. The more dynamic displacement of coffee beans gives more even heat distribution. Force balance analysis can be used to predict the coffee bean displacement since it can predict particle movement with mutable variables. This paper compares the coffee bean displacement inside the drum roaster with flippers and without flippers using simple force balance analysis. The analysis involves tangential force, centrifugal force, frictional force, and the beans' weight itself. The analysis shows that the radius of the drum roaster (r) and angular acceleration (ω) significantly change the resultant force's dynamic, and the various tilt angle of flippers (β) did not too significantly affect it. The bigger radius (r) and angular acceleration (ω) generate a stronger centrifugal force influencing the bean's equilibrium. The direction change of force resultant applied to the bean is more smooth in the drum with flippers than without flippers. Keywords:  Coffee bean displacement, Drum coffee roaster, Force balance analysis, Resultant force Turning point duration
Analysis of Fuel Consumption Rate of A Rotary Power Tiller on Various Tillage Patterns Purwoko Hari Kuncoro; Halimah Setia Budi Lestari; Krissandi Wijaya; Ropiudin Ropiudin; Arief Sudarmaji; Susanto Budi Sulistyo
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.v12i4.886-898

Abstract

Data about the relationship between various tillage patterns and fuel consumption rate remains scarce. Thus, this study aimed to investigate the effect of five tillage patterns on fuel consumption rate. The five tillage patterns applied were 1) gathering pattern, 2) casting pattern, 3) one way pattern, 4) spiral pattern, and 5) alpha pattern. While, rotary power tiller operation was set for a) with-no implement and b) with implement. During the rotary power tiller operation, total time consumed (t) and fuel consumption rate (FCR) were measured. As the result, different tillage pattern gave different t and FCR values for the both conditions of rotary power tiller operation namely with-no implement and with implement conditions. The alpha pattern gave the highest values, for which t values were 11.77 and 13.67 minutes, respectively, and FCR values were 10.77 and 14.87 liters/ha, respectively. On the other hand, the one way pattern was found to be the most efficient after giving the lowest values, for which t values were 5.86 and 8.60 minutes, respectively, and FCR values were 4.27 and 5.04 liters/ha, respectively. The data further confirmed a positive correlation between t and FCR. This result suggested that tillage patterns affect t, by which FCR could be altered. In this case, the number of turning passage was thought as the property of tillage pattern that affects t. The higher values of t and FCR for the rotary power tiller operation with implement than those of the tractor operation with-no implement were probably due to the greater engine power required for dealing with the operated implement and tillage draft. Keywords: Fuel consumption, Rotary power tiller, Tillage pattern, Time consumption
Prediction of Caffeine and Protein of Arabica Coffee Beans Using Near Infrared Spectroscopy (NIRS) Fitri Yuwita; Ifmalinda Ifmalinda; Muhammad Makky
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.v12i4.852-862

Abstract

Testing the chemical components of coffee beans has so far been carried out conventionally with laboratory analysis which requires a long time and is expensive. Technological advances allow testing of chemical components to be carried out quickly and accurately using the NIRS (Near Infra Red Spectroscopy) method. This research aims to develop a prediction model for caffeine and protein in Solok Radjo coffee beans using the NIRS method. Solok Radjo coffee is a type of Arabica with specialty grade because of its very strong character, aroma and taste. A total of 30 samples with a weight of 6 g per sample were used in this study. This research uses NIRS Type FT-IR IPTEK T-1516 with a wavelength of 1000 - 2500 nm. The partial least squares (PLS) method was used to process the data with several SNV, MN, and MSC pretreatments to improve the model. The research results show that caffeine is found at wavelengths of 1456 - 1475 nm, 1937 - 1974 nm. Proteins 1455 - 1475 nm, and 1935 - 1974 nm. MSC pretreatment is able to improve PLS performance results. Caffeine calibration values are R2 = 0.996 and SEC = 0.002%, validation values R2 = 0.989, SEP = 0.002%, and RPD 11.869 while protein calibration R2 = 0.999 and SEC = 0.004%, Validation values R2 = 0.999, SEP = 0.010%, and RPD 19,943. NIRS can be used to predict the chemical components of Solok Radjo coffee non-destructively using the PLS method. Key work: Caffeine, NIRS, PLS, predict, protein 
Growth and Yield of Tomato (Lycopersicum esculentum Mill.) Due to Application of Hormonic PGR and NPK Fertilizer Anis Nurmala Puspitasari; Didik Utomo Pribadi; Hadi Suhardjono
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.v12i4.948-956

Abstract

Tomatoes have high economic value with community demands increases every year. However, the productivity of tomatoes farmers in Indonesia can not meet the demands of Indonesian consumers. Efforts to solve low productivity in tomatoes cultivation can be made through certains cultivation techniques. The intention of this study is to acquire appropriate combination of “Hormonik” Plant Growth Regulator (PGR) concentrations and NPK fertilizer dosages for the optimum growth and yield of tomato plants. This study used a factorial experimental method with a completely randomized design (CRD). The first factor is Hormonik PGR concentrations (H) in 4 different treatment levels that consist of control variable (no PGR added) (H0), 6 ml/l (H1), 7 ml/l (H2), and 8 ml/l (H3). The second factor is NPK fertilizer dosages (N) in 4 different treatment levels that consist of 24 g/plant (N1), 32 g/plant (N2), 40 g/plant (N3), and 48 g/plant (N4). This study showed that combination of 6 ml/l Hormonik PGR and 40 g/plant of NPK fertilizer provide the highest number of fruits per plant by 49.0 and the weight of fruit per plant by 1,572.3 g. Keywords : Concentration of Hormonik PGR, Dose of NPK Fertilizer, Production, Tomato.
Effect of Liquid Organic Fertilizer Type and Concentration on the Growth and Production of Purple Eggplant (Solanum melongena L.) Agus Sulistyono; Kiki Adelia Putri; Djarwatiningsih Pongki S.
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.v12i4.997-1009

Abstract

The productivity of purple eggplant has decreased and consumption continues to increase, it is necessary to increase the productivity of purple eggplant. Increasing productivity can be done by applying liquid organic fertilizer (LOF) derived from organic waste such as banana peels and fish waste. The purpose of this study was to determine the type and concentration of LOF that can help the growth and yield of purple eggplant. This research was conducted on the land of the Faculty of Agriculture, University of National Development (UPN) "Veteran" East Java in March to July 2022. The study used a factorial Randomized Block Design (RBD) consisting of 2 factors. The first factor was the LOF of banana peels and LOF of fish waste. The second factor is the LOF concentration level, namely 10%, 15%, 20%, 25% and 30%. The results showed that the treatment combination of fish waste LOF with a concentration of 30% gave plant with a biggest stem diameter of 1.01 cm. While the treatment combination of fish waste LOF with a concentration of 25% gave results with a total of 16.78 flowers and a total fruit weight of 1435.61 g/plant. Keywords:   Banana peels, Concentration, Eggplant, Fish waste, Yield

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