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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
 86   87   88   89   90 
High Quality Product, Good Services, and Competitive Pricing of Local Coffee Shop to Increase Consumer Satisfaction and Loyalty Gunawan, Aidin Wahyu; Muhaimin, Abdul Wahid; Sitawati, Riyanti Isaskar
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.v13i2.592-605

Abstract

The objective of this work is to analyze the effect of service quality, product quality and price on the consumer satisfaction and loyalty of “Beli Kopi” at Baureno Village. This research used Structural Equation Modeling (SEM) analysis with a sample of 50 respondents. The results show that most customers were highly educated with high income and women as the main consumers. Service quality, product quality and price have a significant contribution to consumer satisfaction and loyalty. The research model is valid with outer loading > 0.706 and reliable with AVE > 0.874 and improving service quality, product quality and prices in line with consumer values will increase consumer satisfaction and loyalty. It is hoped that this research can provide theoretical and practical contributions in increasing consumer satisfaction and loyalty at “Beli Kopi” Baureno Village. The research also showed that service quality, product and price influence consumer satisfaction. Product quality is the strongest factor. Consumer satisfaction also has a strong influence on loyalty. To increase sales, research suggests that “Beli Kopi” improve service, maintain product quality at appropriate prices, and create attractive promotions. Keywords:  Coffee, Price, Product quality, Service quality, SEM (Structural Equation Modeling).
Constructing Brand Image and Product Quality in the Tea Industry: A Strategy to Increase Customer Loyalty through Customer Satisfaction Setyaningrum, Novi; Setiawan, Budi; Andriani, Dwi Retno
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.
Rainfall-Runoff Modelling in Tropical River Basin for Water Conservation Planning Using Water Recharge Ponds Yuzanni, M Yusfan; Setyawan, Chandra; Susanto, Sahid; Nugraheni, Yekti
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.v13i4.1171-1181

Abstract

Land conversion in river basins poses a threat to future water availability. This research aims to estimate water availability, particularly stream flow for planning of water conservation. Water availability was analyzed using a hydrology tank model. The model was calibrated by using stream flow data measured in a reservoir and then used to estimate water availability in the reservoir's catchment area. The value of model parameters such as wet infiltration coefficient (WIC), dry infiltration coefficient (DIC), soil moisture capacity (SMC), initial soil moisture (ISM), initial groundwater storage (IGWS), groundwater recession constant (k) was determined through the calibration process. The results showed that the model has good accuracy for stream flow calculation indicated by the value of statistical parameters i.e. coefficient of correlation (R) = 0.93, a volume of error (VE) = 0.04, and a coefficient of efficiency (CE) = 1.00. During the wet season, the specific maximum discharge is 0.11 m3s–1km–2. Meanwhile, the minimum specific discharge is 0.030 m3s–1km–2. These differences indicate that optimizing rainwater harvesting during the wet season is required. Rainfall-runoff modeling reveals the potential for surface runoff during the wet season is 1,139 mm. This finding provides an essential reference for water conservation, especially using water recharge ponds. Keywords: Hydrology tank model, Stream flow, Tropical river basin, Water availability, Water conservation.
Soil Physical Properties of Oil Palm Plantations in Tidal Areas of Peatland Simanullang, Herbin Dinto; Denaneer, Dean; Afrianti, Suratni
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.v13i4.1101-1108

Abstract

Oil palm (Elaeis guineensis Jacq) is a plant with a higher vegetable oil content than other oil-producing plants, so palm oil is widely used as the main raw material for processed vegetable oil. The increasingly limited land area and the larger land area in Indonesia so that the space for plantation companies to expand the land is increasingly limited, so that the expansion of oil palm plantations began to change from optimal land to suboptimal land. Soil physical properties are properties related to the shape or original condition of the soil. This study aims to determine the physical properties of soil (texture, porosity, moisture content, soil color, particle density, and bulk density) on peatlands in the tidal area of PT Sinar Gunung Sawit Raya. This research used survey method with descriptive analysis. The soil samples taken were peat soil in the tidal area with purposive random sampling method at a depth of 30 cm. This research was conducted in November 2023 and continued in the laboratory for testing each soil physical properties. The results of the research on soil physical properties at PT Sinar Gunung Sawit Raya on peatlands in tidal areas show that the soil texture is loamy sand, soil porosity is good, moisture content is relatively normal, soil color looks relatively dark, particle density is still low and bulk density value shows low. Keywords: Loamy sand, Oil palm, Peat soil, Soil color, Soil texture.
Design of Scheduled Fog Irrigation System with ESP 32 in Mustard Seedbed (Brassica juncea L.) Sumarsono, Joko; Widhiantari, Ida Ayu; De Side, Gagassage Nanaluih; Widhiantara, I Ketut 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.v13i4.1109-1120

Abstract

Plants receive water from the fog irrigation system in the form of tiny, mist-like water particles. Currently, irrigation technology has advanced, nurseries can be automatically irrigated. In this research, the ESP32 microcontroller is used to create the electronic circuits for the automation of the fog irrigation control system in a mustard green nursery. This study's methodology combines direct field observation with an experimental or trial approach. Water flow (ml/minute), water use efficiency (%), plant height (cm), number of leaves, and scheduled fog irrigation system performance are among the measured parameters. In this investigation, four different treatments were used: manual irrigation using a watering can, two-time, three-time, and one-time irrigation. All is going according to plan with this mist watering system. With an average height of 4.58 cm and an average number of leaves of 3.24, the mist irrigation system had the highest water use efficiency of 77.35% during the test. It was also found that mist irrigation produced the highest amount of mustard leaves in the three-times-per-day treatment. Keywords: ESP32, Fog irrigation, Green mustard, Nurseries.
The Improvement of Productivity and Benefits for Farmers: Analysis of Production Factors, Social Capital, and Demography Novia, Dian Ayu; Andriani, Dwi Retno; Asmara, Rosihan
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 3 (2025): June 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i3.1098-1109

Abstract

This study aims to analyze the influence of production factors, social capital, and socio-demographic on the productivity and welfare of farmers in Klampok Village, Kapas District, Bojonegoro Regency. Utilizing a quantitative method with a likert scale for measuring variables, the research employs Partial Least Squares Structural Equation Modeling (PLS-SEM) for data analysis. Data was collected from 52 respondents determined based on the total farming population in Klampok Village, ensuring statistical adequacy for analysis. The findings indicate that production factors, social capital, and socio-demographic variables significantly impact both the productivity and welfare of farmers. The highest mean value was found for experience variable, suggesting a high level of respondent agreement. Conversely, income variable recorded the lowest mean value but within a satisfactory range. The study contributes to the understanding of how these factors collectively enhance farmers' living standards, with productivity serving as a moderating variable in achieving welfare. The research underscores the importance of optimizing production factors, social capital, and demographic aspects through policy development and program implementation to improve farmers' welfare. The results are expected to inform policymakers, agricultural practitioners, and the community about the critical factors enhancing the livelihood of farmers, and program implementation to improve farmers' welfare. Keywords: Farmer’s Welfare, Production Factors, Productivity, Social Capital, Socio-Demographic Factors.
The Effect of Brand Image, Positive Emotions, and Consumer Crowd on Consumer Satisfaction of NPK Liquid-Fertilizer Products: An Empirical Analysis Agustina, Silvina; Maulidah, Silvana; Shinta, Agustina
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.
Purchasing Decision for Crystal Guava Fruit: Influence of Product Attributes, Attitudes, and Consumer Interest Tri Utomo, Hendro Priyo; Muhaimin, Abdul Wahib; Isaskar, Riyanti
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.v14i1.107-117

Abstract

Crystal guava (Psidium guajava L.) holds significant growth potential in Indonesia due to its large fruit size, immaculate flesh, minimal seed content (less than 3%), and high vitamin C levels. However, production faces challenges such as inconsistencies in quality and freshness, variations in fruit shape that deviate from market preferences, and inconsistent quality among farmers in Bojonegoro Regency. This study investigates the impact of product attributes, customer attitudes, and consumer interest on purchasing decisions for crystal guava in the region. A descriptive quantitative approach was employed, utilizing Structural Equation Modeling (SEM) with Warp Partial Least Square (WarpPLS). Primary data were gathered through structured questionnaires with 117 respondents, while secondary data were obtained from literature reviews using a non-probability sampling method. The results reveal that product attributes positively influence customer attitudes and consumer interest. Additionally, consumer interest and attitudes significantly affect purchasing decisions. The study underscores the importance of improving product quality and consistency to enhance customer perceptions and interest. Addressing these issues will not only meet consumer expectations but also boost market demand for crystal guava in Bojonegoro Regency. Strengthening product attributes is critical to fostering favorable attitudes, increasing interest, and driving purchasing decisions. Keywords: Consumer attitudes, Consumer interests, Crystal guava fruit, Product attributes, Purchase decisions.
Biochar and Humic Substances Roles for Nitrogen Transformation in Agriculture Pratiwi, Gagad Restu; Nurrahma, Arinal Haq Izzawati
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.v13i4.1442-1452

Abstract

Sustainable soil fertility management is crucial for global food security and addressing environmental challenges from modern agriculture. Soil health, alongside water availability, is essential for crop productivity, and soil degradation threatens food security by lowering yields and intensifying climate change. Nitrogen (N) cycling is central to soil fertility, supporting plant growth through nutrient replenishment and microbial activity. However, N is often lost through leaching, volatilization, and denitrification, reducing nitrogen use efficiency (NUE) and contributing to water pollution and greenhouse gas (GHG) emissions. Optimizing nitrogen retention in soils is vital for improving productivity and minimizing environmental harm. Biochar (BC) and humic substances (HSs) have emerged as effective strategies for improving N management. BC enhances soil fertility by increasing soil pH, cation exchange capacity, and water retention, while reducing nutrient leaching and promoting carbon sequestration. HSs, including humic acids (HA), fulvic acids (FA) and humin (HU), improve nutrient cycling by stimulating microbial activity and enhancing nutrient transport. Together, BC and HSs provide synergistic benefits for soil health, particularly in challenging environments like saline or nutrient-depleted soils. This review highlights the roles of BC and HSs in enhancing soil fertility, promoting N mineralization, and improving crop productivity. It emphasizes their potential for sustainable agricultural practices, climate change mitigation, and long-term soil health. Keywords: Biochar, Climate changes, Humic substances, Remediation, Soil fertility.
Modeling River Water Levels in Tidal Swamp Areas using HEC–RAS to Determine the Hydrotopography of Tidal Farmland Nurrahman, Faiz Afnan; Setyawan, Chandra; Mawandha, Hanggar Ganara
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 2 (2025): April 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i2.685-700

Abstract

Swamp land is a natural resource that can be utilized to improve community welfare, because swamp land is one of the potential natural resources and can be used as agricultural land development. The aim of this research is to analyze the tidal water movement patterns of rivers and channels in the swamp irrigation area of Palingkau. The stages in this research included the installation of an Automatic Water Level Recorder (AWLR) to collect real-time water level data, then modeling the tidal movement of river water level using HEC–RAS modeling. The results of this research showed that the pattern of tidal water flow movement in the swamp irrigation area of Palingkau is diurnal tide, characterized by the existence of one high tide and one low tide in one day. Furthermore, HEC–RAS modeling can be used to describe the tide of water levels in the swamp irrigation area of Palingkau. Validation of the HEC–RAS model shows that the tidal flow modeling simulation is good and very suitable for use. Based on the hydrotopography class, the land at the research location is classified into 3 classes, namely hydrotopography classes of B, C, and D. Keywords: Agriculture, HEC–RAS Modeling, Hydrotopography, Land, Swamp.

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