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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 34 Documents
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Search results for , issue "Vol. 14 No. 1 (2025): February 2025" : 34 Documents clear
Mapping Soil Fertility Status of Alluvial Formations Using the SFI Method and Kriging Interpolation Geographic Information Systems Basuki, Basuki; Fatmawati, Aisyah; Rohman, Fahmi Arief
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.
Development of Floating Rice Cultivation Technology in Community-Based Peat Swamp Land Widodo, Aris Slamet; Supangkat, Gatot; Mulyono, Mulyono; Ulum, Bahrul
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.
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.
Designing Soil Color Sensors to Determine Soil Characteristics Based on Internet of Things (IoT) Andriansyah, Muhammad Afifi; Arifin, Moch; Maroeto, Maroeto
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.v14i1.83-91

Abstract

Soil color is the important due to its relation with other soil properties. It is usually analysis with the standard Munsell Soil Color Charts (MSCC). While other properties including organic matter need to be analyzed in the laboratory. The objective of this study is to develop IoT sensor for soil that is able to detect rapidly soil color and other properties including C-organic, pH, and cation exchange capacity (CEC). Soil color data from five soil type was analyzed using the MSCC and used as input data to the IoT (internet of things) sensor. In addition, soil properties obtained from lab tests was also included. The designed IoT sensor was used to detect soil color and soil properties of 7 soil types used as the testing samples. The sensor performance was evaluated by comparing soil properties predicted using IoT and lab analysis. Results showed the use of IoT soil sensor succeeded in determining soil characteristics including pH, CEC, and C-organic based on soil color. In addition, the soil color sensor had high accuracy to predict soil properties with a very small difference compared to the lab analysis, namely 0.01% difference for C-organic, and other properties of <5% difference. The development of IoT soil sensor will be important in the fields of agriculture and land management. Keywords: Acidity (pH), CEC, C-Organic, IoT, Soil Color.
Effect of Biopore Infiltration Hole on Soil Nutrient Availability and Nutrient Content of Coffee Leaves (Coffea canephora) Syarof, Zahrotun Naylis; Soemarno, Soemarno; Nopriani, Lenny Sri
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.v14i1.49-56

Abstract

Coffee is an important plantation commodity for the Indonesian economy. However, coffee production has decreased due to low soil fertility. One effort to increase soil fertility is by applying Biopore Infiltration Hole. This study aimed to examine the effect of biopore on nutrient availability in coffee leaves (Coffea canephora) and soil in Jatikerto Field, Malang. The experiment used a randomized block design with four treatments: control, 30 cm depth biopore, 30 cm biopore + compost, and 30 cm biopore + goat manure. Nutrient content on leaves and soil chemical properties (total N, available P, K-exchangeable) were measured. The results showed that the application of BIH 30 cm plus goat manure, was able to significantly increase the availability of N, P, K nutrients in coffee leaves and also soil total N, available P, K-exchangeable. Overall, the application of BIH was able to increase soil fertility and nutrient uptake by coffee plants. Keywords: Biopore, Compost, Nutrients. Organic,
Impact of High-Temperature Heating on the Chemical Stability and Sensory Quality of Red Palm Oil Hidayati, Sri; Rahmawati, Aulia; Suroso, Erdi; Subeki, Subeki; Utomo, Tanto P.
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.v14i1.215-225

Abstract

Red palm oil (RPO) is known for its high carotenoid content, particularly β carotene and α-carotene, which provide significant provitamin A activity. However, it is susceptible to oxidation during frying and results in nutrient loss and quality degradation. This study investigates the effects of high temperatures and prolonged heating durations on the chemical and sensory properties of RPO. The experiment involved heating RPO at three different temperatures (140°C, 180°C, and 220°C) for durations ranging from 2 to 10 hours. Chemical analysis included peroxide values, free fatty acids, and changes in functional groups through Fourier Transform Infrared (FTIR) spectroscopy. Sensory evaluations focused on aroma and color alterations due to heating. Results showed that prolonged heating of RPO at high temperatures led to significant increase in peroxide values, and the formation of oxidation products, including aldehydes and ketones, which negatively impacted the sensory qualities. The oil darkened, and a burnt aroma developed, reducing overall sensory appeal. These findings provide new insights into the optimal frying conditions to preserve the nutritional and sensory qualities of RPO, particularly by minimizing heating duration and temperature. Keywords: Nutritional value, Prolonged heating, Red palm oil, Sensory attributes, Thermal oxidation.
The Influence of Length of Rehabilitation Process for Ex-Nickel Mining Land on Soil pH, Soil Organic Matter, Population and Distribution of Soil Microbes Priono, Timur; Rosariastuti, Retno; Sudadi, Sudadi; Mujiyo, Mujiyo; Dewi, Widyatmani Sih
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.v14i1.99-106

Abstract

This study aimed to analyze the influence of rehabilitation length process of the ex nickel mining land on soil pH, SOM, population and soil microbial distribution in East Halmahera, North Maluku, Indonesia. Purposive sampling method was taken under completely randomized design (CRD) with variation of rehabilitation length process: 0, 2, 4, 6, and 8 years. The parameter included soil pH, SOM, population and soil functional bacteria. Data was analyzed using ANOVA and continued by Duncan Multiple Range Test (DMRT) at 5% error level. The result showed the length of rehabilitation process can reduce soil pH, increasing bacteria and fungi population. Four years of rehabilitation process in 2020-Nancy with special treatment of intensive watering resulted the best soil quality characterized by soil pH 6.48, SOM 4.03%, bacteria population of 85 × 10¹ CFU/g, fungi population of 7 × 10¹ CFU/g, non-symbiotic nitrogen-fixing bacteria of 7.0 × 10¹ CFU/g, phosphate-solubilizing bacteria of 0.5 × 10¹ CFU/g, potassium-solubilizing bacteria of 1.0 × 10¹ CFU/g, and proteolytic bacteria of 3.0 × 10¹ CFU/g. The rehabilitation length of 4 years with intensive watering is recommended to provide nutrient and soil microbial on ex-nickel mining rehabilitation. Keywords: Bacteria, Fungi, Nickel, pH, SOM.
Study of Soil Physical Properties Based on Land Use Units for Agriculture (Ricefield, Dryland, and Moorland) Tanaya, Alexandra Neovita; Maroeto, Maroeto; Purwadi, Purwadi
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.v14i1.137-145

Abstract

Sub-watersheds are formed from the interaction process of soil-forming factors such as geology, topography, and organisms. Each interaction process results in different characteristics of soil physical properties. Physical characteristics can serve as the main reference in planning, implementing, and evaluating appropriate management of Sub watershed Areas. The purpose of this study is to examine the characteristics of soil physical properties in the Manten Sub-watershed. This research uses an exploratory approach with a field survey approach through 3 stages of activities, namely pre-survey, survey, and post survey. Each land use was repeated five times to represent the area of each land use. The parameters observed include texture, bulk density, particle density, permeability, and porosity. The results show that the physical properties of the soil in the Catchment area of the Manten Sub-watershed, Malang Regency, are very different in each land unit. Soil texture is dominated by the loam class (T1, T4, T5, S1, S2, S3, K3, and K4). Based on the research results of soil physical properties in the catchment area of the Manten sub watershed, moorland use has better soil physical properties than dry field and paddy field land uses. The poor soil physical properties in dry field and paddy field land uses may be caused by excessive land cultivation and low soil organic matter content. Keywords: Catchment area, Land use unit, Soil physical, Sub-Watershed.
Factors Influencing Technical Efficiency of the Rice (Oryza sativa) Farming Prabowo, Jamaludin Adi; Fahriyah, Fahriyah; Syafrial, Syafrial
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.v14i1.240-248

Abstract

Increasing production and productivity, primarily done in the rice production centers, is the main focus to reduce the rate of rice imports in Indonesia. Measuring technical efficiency and analyzing factors influencing of rice farming is important in order to achieve maximum production and to obtain maximum profits. This study aims to determine the level of technical efficiency of rice farming analyze factors affecting rice farming. The research location was chosen purposively in Kedungadem, Kalitidu, and Kapas Districts with a sample of 150 rice farmers using simple random sampling. The analytical methods used Data Envelopment Analysis (DEA) with the Variable Return to Scale (VRS) model to measure technical efficiency, while tobit regression analysis to identify factors affecting technical efficiency, and farm income analysis. The research results indicate that the factors significantly affecting technical efficiency are land size, level of formal education, farming experience, and land ownership status. The technical efficiency level of rice farming in the study areas, assessed using the DEA approach under the VRS assumption, was classified to be moderate efficient. However, rice farming in the study sites can be considered as profitable. Keywords: Education, Land ownership, Land size, Variable Return to Scale (VRS).
Effect of Potassium Fertilizer and Humic Acid Doses on Peanut (Arachis hypogaea) Yields Nabillah, Chairunnisa Faza; Sutini, Sutini; Kusumaningrum, Nora Augustien
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.v14i1.31-38

Abstract

This research aims to determine the best dose of KCl fertilizer and humic acid for peanut yields. The study was conducted using a split-plot design with two factors, and each factor was repeated three times. The dose of KCl as a subplot consisted of 4 levels (0, 50, 75, and 100 kg/ha), while humic acid as the main plot consisted of 4 levels (0, 10, 20, and 30 kg/ha). Observation included the number of non-productive gynophores, the number of pods, dry weight harvest yield (pods per plant, pods per plot, seeds per plant, and seeds per plot), and the weight of 100 seeds. The single factor of KCl dosage significantly affected the dry weight of pods per plant, dry weight of seeds per plant, and dry weight of seeds per plot. The single factor of humic acid treatment had no significant effect on all observation variables, while the interaction of KCl and humic acid doses significantly affected the number of non productive gynophores and the weight of 100 seeds. The best dosage was 100 kg/ha, producing the highest yield with a dry seed weight per plot of 147.43 g. The combination of KCl 75 kg/ha and humic acid 30 kg/ha produced peanuts with the best quality, with weight 100 seeds of 39.47 g. Keywords: Humic acid, KCl, Peanut, Potassium, Yield.

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