cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota bandar lampung,
Lampung
INDONESIA
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
 55   56   57   58   59 
The Effect of Brand Image, Positive Emotions, and Consumer Crowd on Consumer Satisfaction of NPK Liquid-Fertilizer Products: An Empirical Analysis Silvina Agustina; Silvana Maulidah; Agustina Shinta
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.v13i4.1132-1141

Abstract

Consumer satisfaction management regarding NPK liquid-fertilizer in Bojonegoro, the main fruit farming center in East Java, is crucial. This study explores brand image and organic fertilizer usage. Challenges like crowded fertilizer stores can influence consumers' positive feelings, impacting their satisfaction. The research aims to examine the correlation between brand image, positive feelings, and in-store crowd with consumer satisfaction. A quantitative explanatory research method was employed with simple random sampling. Face-to-face interviews and meticulous data analysis were also conducted. The findings are expected to offer new insights for farmers and retailers of NPK liquid-fertilizer in Bojonegoro to enhance consumer shopping experiences and ensure optimal satisfaction levels. The study's results test the relationship between brand image, positive feelings, in-store crowd, and consumer satisfaction with NPK liquid-fertilizer products in Bojonegoro. While the influence of brand image on positive feelings and consumer satisfaction is inconclusive, positive feelings and in-store crowd significantly impact consumer satisfaction. The importance of managing positive emotions and providing smooth shopping experiences to enhance consumer satisfaction is emphasized. Keywords: Brand image, Consumer satisfaction, Emotional management. NPK liquid-fertilizer, Positive feelings.
Exploring the Impact of Temperature and Solvent Ratio on Phenol and Flavonoid Levels in Alpinia galangal L. Extract Using Evaporative Vacuum Cooling Dina Wahyu Indriani; Firdha Dwi Anggraini; Yusuf Hendrawan; Anang Lastriyanto
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.v13i4.1064-1076

Abstract

The objective of this research is to determine the impact of temperature gradients and solvent ratios in the evaporative vacuum cooling method on the yield of phenol and flavonoid content in galangal extract; ascertain the impact of these factors on the yield generated by galangal extract; and ascertain the mass balance analysis of materials are the objectives of this study. Throughout the extraction of galangal. The study's findings demonstrated that the evaporative vacuum cooling technique, conducted at 49 ºC and with a 1:1 solvent ratio of 1.4432±0.7317 mg GAE/g, produced the highest total phenol concentration. The three differences in the temperature of the evaporative vacuum produced the total phenol content cooling. The overall phenol content obtained decreases with increasing solvent ratio addition. Although the evaporative vacuum cooling treatment at 45 °C yielded the highest total flavonoid content (1.2418±0.2365 mg QE/g) at a 1:2 solvent ratio, the total flavonoid content varied between the three evaporative vacuum cooling temperature variations. The yield of total phenolic and flavonoid compounds was not significantly affected by temperature gradient adjustments or the ratio of galangal extract to solvent (Sig. > 0.05) in any of the data samples pertaining to phenolic and flavonoid compounds. Keywords: Evaporative vacuum cooling, Flavonoids, Galangal, Phenol.
Quality Characteristics of Functional Beverages from Moringa Leaf Juice with the Addition of Red Ginger Juice and Sucralose Julfi Restu Amelia; Bella Roslia Syafitri
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.v13i4.1383-1394

Abstract

Moringa functional drink is well known for its benefits for health but has weaknesses in the form of sensory value in aroma and taste, so the addition of red ginger juice and sucralose is necessary. The research aims to determine the quality characteristics of functional drink, which is added with varying concentrations of red ginger juice and sucralose and reviewed based on its physical, chemical, microbiological, and organoleptics. Completely Randomized Design (CRD) was used for research design with two factors and two replications: red ginger juice (30%, 40%, and 50%) and sucralose (100 ppm, 150 ppm, and 200 ppm). The ANOVA showed significantly different results (α = 0.05) for total dissolved solids, antioxidant activity values, and organoleptic tests. The best treatment was obtained by adding a concentration of 40% red ginger juice and 150 ppm sucralose, with a total dissolved solids value of 4.97˚Brix, an IC₅₀ antioxidant activity value of 46 ppm indicating very strong antioxidant activity, the hedonic test score was in score range of 4 for color and 5 for aroma and taste. The metals contamination is below the threshold, the total plate number is <1×10³ colonies/ml, and the yeast mold number is <1×10² colonies/ml. Keywords: Antioxidant, Functional, Moringa, Red Ginger, Sucralose.
Optimization of used engine oil Furnace Design with Initial Heater Muhammad Sahbudin; Wawan Hermawan; Agus Sutejo
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.v13i4.1237-1248

Abstract

Used engine oil is a waste from various types of machinery that has potential as an alternative fuel. The viscous characteristics of used engine oil require viscosity adjustment to be utilized as fuel. Nowadays used engine oil burners are generally using an external heater as an initial preheater, which causes the thermal efficiency decreased. The aims of this study are optimizing the design of the used engine oil burner by adding an initial heater and to find the optimum operating conditions of the burner to improve thermal. The initial heater is a spiral-shaped heat exchanger around the flame inside the burner, using its heat to decrease the viscous of used engine oil, so the used engine oil can be used as burner fuel. This study is varying the combustion air flowrate at 3.2×10-3 kg/s, 4.6×10-3 kg/s, and 6.4×10-3 kg/s and fuel rates of 2.1×10-4 kg/s, 3.1×10-4 kg/s, and 4.3×10-4 kg/s so the best performance of the burner will be observed. The results were obtained the best burner performance air flowrate of 4.6×10-3 kg/s and fuel flow rate of 4.3×10-4 kg/s, producing flue gas heat of 544°C, useful energy of 2.69 kW, and a resulting thermal efficiency of 59.54%. Keywords: Burner, Design optimization, Initial heater, Used engine oil, Viscosity.
Development of Floating Rice Cultivation Technology in Community-Based Peat Swamp Land Aris Slamet Widodo; Gatot Supangkat; Mulyono Mulyono; Bahrul Ulum
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 14, No 1 (2025): February 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i1.10-20

Abstract

Peat swamp farming has great potential to increase food security from local potential. One of the technological innovations of cultivation on peat swamp land is by applying floating rice cultivation. This study aims to assess the success rate of implementing floating rice cultivation technology on peat swamp land in East Kalimantan. The method used is participatory action research with the community in one of the villages in East Kalimantan, namely Minta Village, Penyinggahan District, West Kutai Regency. Floating rice was applied using a 1.5 x 6 m bamboo raft with a total of 40 rafts. The rice varieties used were SR (Sri Republik) Super Genjah 75 HST rice. The results of the study showed that the plant height reached 90 cm, with 32 tillers, and 32 floating rice panicles. The average grain yield was 30 grams/clump or equivalent to 5 tons/ha assuming land use efficiency of 80%. The obstacles in floating rice cultivation in peat swamp land are the presence of pests in the form of sundep in the growth phase and sparrows in the rice grain production phase. In an effort to accelerate the adoption of floating cultivation technology, intensive socialization and education are needed. Keywords: Agricultural production, Cultivation technology, Floating rice, Innovation technology, Peat swamp land.
Application of Foam Mat Drying Method for the Production of Instant Red Ginger Powder using Microwave Purbasari, Dian; Lestari, Wahyu Winda; Sutarsi, Sutarsi; Lestari, Ning Puji; Taruna, Iwan
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.v13i4.1142-1150

Abstract

Drying red ginger juice into instant powder is done to extend the shelf life of ginger which easily undergoes physical and chemical changes. This research aims to determine the characteristics of red ginger juice powder resulting from the foam mat drying method using a microwave. This research used a Completely Randomized Design method with two factors. Factor I is the microwave oven power (341 W, 364 W, and 466 W). Factor II is the concentration of maltodextrin (10%, 15%, and 20%). Data analysis used a two-way ANOVA test and continued with the DMRT test and scoring test. The results of the powder characteristics produce FM values (5.01 – 5.55); D (0.14 – 0.21 mm); yield (6.70 – 7.11%); powder moisture content (3.26 – 6.37%); brightness level (71.10 – 84.97); redness level (4.14 – 9.13); yellowness level (16.35 – 25.67); water absorption capacity (32.76 – 53.11) and solubility (99.93 – 99.99). Differences in microwave power affect the parameters of degree of fineness (FM), grain size (D), water content, brightness level (L), redness level (a), yellowness level (b), water absorption capacity, and solubility power. Differences in maltodextrin concentration affect the parameters of redness level and solubility. The best combination treatment is 343 W microwave power treatment with a maltodextrin concentration of 20%. Keywords: Drying, Foam mat drying, Microwave, Powder, Red ginger.
Growth Rate and Production of Hybrid and Local Maize (Zea Mays L.) in Response to Various Doses of Nitrogen Fertilization Ni Ketut Wirastiti; Kukuh Setiawan; Tumiar Katarina Manik
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.v13i4.1077-1089

Abstract

Corn (Zea mays L.) is a strategic commodity after rice so that the productivity need to be optimize through nitrogen fertilization. The aim of this research is to evaluate the effect of various doses of urea fertilizer on the growth rate and yield of hybrid corn and local corn. This research was conducted from June to October 2022 on the pilot land of the Agricultural Training Center (Bapeltan), Hajimena, Bandar Lampung. The factorial experiment (5x2) was arranged in a randomized complete block design with 3 replications. The first factor is urea fertilizer doses, namely: 200 kg/ha (N1), 250 kg/ha (N2), 300 kg/ha (N3), 350 kg/ha (N4) and 400 kg/ha (N5), while other fertilizers were given to all experimental plots in the same rate (150 SP-36 kg/ha and 100 kg KCl kg/ha). The second factor is the corn variety, included V1 (BISI-18) and V2 (Tongkol Merah) varieties. The results showed that increasing dose of urea from 200 to 400 kg/ha was not able to increase the growth rate of both corn varieties. The productivity of the BISI-18 corn variety is higher than that of the Tongkol Merah as indicated by the wet weight of the cobs (g), the dry weight of grains per plot (g), and the yield of corn dry grains (tons/ha). The yield of dry corn seeds for the BISI-18 corn variety was 11.7 tons/ha, while for the Tongkol Merah variety was 9.44 tons/ha. Keywords: Fertilizer dosage, Hybrid corn, Local corn, Nitrogen use efficiency, Yield. 
The Application of Nanobubble Technology in Hydroponic SWU-01 to Increase Dissolved Oxygen Concentration and Lettuce Plant Growth Asep Yusuf; Chay Asdak; Mimin Muhaemin; Eza Zahrotul Fuadah; Sophia Dwiratna; Muhammad Achirul Nanda; Anto Tri Sugiarto; Hilman Syaeful Alam
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.v13i4.1395-1402

Abstract

Hydroponic model SWU-01 is a new hydroponic system innovation that regulates watering automatically and independently by utilizing gravity and Archimedes' law. Dissolved oxygen concentration in SWU-01 is only around 3-4.2 mg/L. DO values can be increased by applying nanobubble technology. Ultrafine bubble or nanobubble is a gas bubble in a liquid that has a diameter of <200 nm. The purpose of this study was to determine the effect of nanobubble on dissolved oxygen concentration and growth of lettuce plants cultivated with SWU-01 hydroponics. The experiment used a one-factor randomized complete block design, namely intermittent administration of nanobubble for 15 min every 3 day (P1) and 7 days (P2), and without nanobubble (P0l). The results obtained based on the ANOVA test at the 5% level with the Least Significant Difference (LSD) follow-up test, namely the parameters of fresh weight and number of leaves of lettuce P1 significantly different from P0 and P2, and no significant differences were found in root length, canopy width, and plant height. The P1 treatment is more effective in increasing dissolved oxygen concentration, leaf count, and fresh weight of lettuce produced in lettuce cultivation using the SWU-01 hydroponic system. Keywords: Dissolved oxygen, Hydroponics, Lettuce, Nanobubbles, Plant growth.
Assessment of Land Suitability for Enhancing Key Crop Commodities: Pineapple, Coffee, and Mango Maroeto Maroeto; Rossyda Priyadarshini; Agung Winarno; Ken Bening Jiwa Jeni; Alexandra Neovita Tanaya
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.v13i4.1295-1307

Abstract

This study aims to evaluate land suitability for enhancing the production of key crop commodities in Ngancar District, Kediri Regency, particularly pineapple, coffee, and mango. The district has high soil fertility potential due to its location at the foot of Mount Kelud. The research methods include land surveys, soil sampling at depths of 0-30 cm and 30-60 cm, and laboratory analysis to measure soil physical and chemical properties. Results indicate that the land in the study area generally falls into the marginal suitability class (S3), with the main limiting factors being soil texture dominated by sandy loam, low K₂O levels, and high rainfall that affects pineapple growth. Slope gradient is also a limiting factor for coffee and mango cultivation. Adjustments in soil management, such as timely fertilization and planting crops with strong root systems, can improve the land's suitability potential. In conclusion, although the land in Ngancar District has certain limitations, optimizing land use can enhance the productivity of key commodities, particularly through improved soil management and appropriate fertilizer use. Keywords: Crop commodities, Land Assessment, Land Degradation, Mount Kelud.
Mapping Soil Fertility Status of Alluvial Formations Using the SFI Method and Kriging Interpolation Geographic Information Systems Basuki Basuki; Aisyah Fatmawati; Fahmi Arief Rohman
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol 14, No 1 (2025): February 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i1.1-9

Abstract

Land degradation can be characterized by a decrease in soil productivity. Jember Regency has the potential to develop food crop commodities. A decrease in soil productivity can be caused by a decrease in soil fertility. The study aims to look at the index and distribution of soil fertility in rice fields in southern Jember. The SFI (soil fertility index) technique was utilized in this study to calculate the soil fertility index. SFI is broken down into multiple parts, including calculating the Minimum Soil Fertility Index (MSFI), weighting, and scoring, which are then incorporated into the SFI calculation. The determination of MSFI is done using principal component analysis (PCA). The results of the MSFI analysis involved spatial mapping using kringing analysis to determine the area distribution of each class. The soil fertility index of the research location ranged from 1.72 to 2.28, with a low-class area of 9,224.19 ha (99.522%) and a very low-class area of 44,266 ha (0.478%). Parameters that influence soil fertility levels include cation exchange capacity, total soil nitrogen, and soil organic carbon, with a cumulative value of 84.8%. Keywords: Kriging interpolation, MSFI, paddy field, soil fertility index, soil mapping.

Page 57 of 108 | Total Record : 1077

 55   56   57   58   59 

Filter by Year

2012 2025


Reset
Filter By Issues
All Issue Vol. 14 No. 6 (2025): December 2025 Vol. 14 No. 5 (2025): October 2025 Vol. 14 No. 4 (2025): August 2025 Vol 14, No 3 (2025): June 2025 Vol. 14 No. 3 (2025): June 2025 Vol. 14 No. 2 (2025): April 2025 Vol 14, No 2 (2025): April 2025 Vol 14, No 1 (2025): February 2025 Vol. 14 No. 1 (2025): February 2025 Vol. 13 No. 4 (2024): December 2024 Vol 13, No 4 (2024): December 2024 Vol. 13 No. 3 (2024): September 2024 Vol 13, No 3 (2024): September 2024 Vol 13, No 2 (2024): June 2024 Vol. 13 No. 2 (2024): June 2024 Vol. 13 No. 1 (2024): March 2024 Vol 13, No 1 (2024): March 2024 Vol 12, No 4 (2023): December 2023 Vol. 12 No. 4 (2023): December 2023 Vol 12, No 3 (2023): September 2023 Vol. 12 No. 3 (2023): September 2023 Vol. 12 No. 2 (2023): June 2023 Vol 12, No 2 (2023): June 2023 Vol. 12 No. 1 (2023): March 2023 Vol 12, No 1 (2023): March 2023 Vol 11, No 4 (2022): Desember 2022 Vol. 11 No. 4 (2022): Desember 2022 Vol. 11 No. 3 (2022): September 2022 Vol 11, No 3 (2022): September 2022 Vol 11, No 2 (2022): June Vol. 11 No. 2 (2022): June Vol 11, No 1 (2022): March Vol. 11 No. 1 (2022): March Vol 10, No 4 (2021): Desember Vol. 10 No. 4 (2021): Desember Vol. 10 No. 3 (2021): September Vol 10, No 3 (2021): September Vol. 10 No. 2 (2021): Juni Vol 10, No 2 (2021): Juni Vol. 10 No. 1 (2021): Maret Vol 10, No 1 (2021): Maret Vol. 9 No. 4 (2020): Desember 2020 Vol 9, No 4 (2020): Desember 2020 Vol. 9 No. 3 (2020): September 2020 Vol 9, No 3 (2020): September 2020 Vol 9, No 2 (2020): Juni 2020 Vol. 9 No. 2 (2020): Juni 2020 Vol. 9 No. 1 (2020): Maret 2020 Vol 9, No 1 (2020): Maret 2020 Vol 8, No 4 (2019): Desember Vol 8, No 3 (2019): September Vol 8, No 2 (2019): Juni Vol 8, No 1 (2019): MARET Vol 7, No 3 (2018): Desember Vol 7, No 2 (2018): Agustus Vol 7, No 1 (2018): April Vol 6, No 3 (2017) Vol 6, No 2 (2017) Vol 6, No 1 (2017) Vol 5, No 3 (2016) Vol 5, No 2 (2016) Vol 5, No 1 (2016) Vol 4, No 4 (2015): Special Edition Vol 4, No 3 (2015) Vol 4, No 3 (2015) Vol 4, No 2 (2015) Vol 4, No 1 (2015) Vol 4, No 1 (2015) Vol 3, No 3 (2014) Vol 3, No 3 (2014) Vol 3, No 2 (2014) Vol 3, No 2 (2014) Vol 3, No 1 (2014) Vol 2, No 3 (2013) Vol 2, No 2 (2013) Vol 2, No 2 (2013) Vol 2, No 1 (2013) Vol 1, No 1 (2012) More Issue