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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
 79   80   81   82   83 
Physical Treatments for Alleviating Chilling Injury in Fresh produce Zainal, Putri Wulandari; Syukri, Daimon; Suliansyah, Irfan; Fahmy, Khandra
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.v13i2.493-505

Abstract

Fresh produce has a short shelf-life because the metabolic activity continues after harvest. Low temperature is one of the postharvest technology methods that suppress this activity along storage. Its effects prolong the shelf-life of fruits and vegetables. This method has long been recommended to reduce deterioration during storage so that it can maintain the quality of fruits and vegetables. However, it still has drawbacks such as chilling injury, especially in tropical and subtropical origins that are chilling sensitive. Therefore, another storage method is needed to alleviate chilling injury such as low-temperature conditioning, high-temperature conditioning, and intermittent warming which only use environmental conditioning during storage. The other one has modified atmosphere packaging and controlled atmosphere packaging. They utilize the ideal atmosphere for each fresh product during storage. The treatment proved that it could alleviate chilling injuries such as reduced pitting, flesh injury, failure of mature, scald, peel browning, weight losses, electrolyte leakage, malondialdehyde, respiration rates, production of superoxide radical anion (O₂-) & hydrogen peroxide (H₂O₂), lipoxygenase activity, phospholipase D, phenylalanine ammonia-lyase (PAL), and polyphenol oxidase (PPO). Keywords: Chilling injury, Fresh produce, Intermittent warming, Low temperature, Physical treatment.
Strategy to Develop Okra (Abelmoschus esculentus L.) Plantation Based on Land Suitability Class and SWOT analysis Andriyani, Idah; Wahyuningsih, Sri; Harsono, Soni Sisbudi; Agustina, Dwi
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.v13i3.782-793

Abstract

Okra is famous as super food sources that prevent diabetes and reduce cholesterol. To meet the increasing demand for okra, it is necessary to develop plantation for okra cultivation. In this sense, land suitability analysis for okra plantation is needed as base information to develop the plantation development strategies. This study aimed to identify the okra plantation development strategies in Jember Regency. The strategies involved the technology recommendations needed to improve land conditions. Land suitability evaluation parameters were analyzed using ArcGIS software. The results of the analysis were used to determine internal and external factors in the SWOT (strengths, weaknesses, opportunities, and threats) analysis to determine the technology needed. Results showed that suitable area for okra plantation was divided into class S1 (highly suitable) of 56.85%, and class S2 (moderately suitable) 43.15% of the area. Moreover, based on SWOT analysis the proposed technology strategies for 7 sub districts were in the quadrant II, meaning had weaknesses. Increasing compost as fertilizer was recommended to increase N, K, and P in the soil as well as to increase soil solum. In addition, irrigation and drainage system was proposed to solve problems regarding rainfall. Recommendation to reduce sloping area included terracing development. Keywords: GIS, Land suitability analysis, Okra (Abelmoschus esculentus L.), Plantations development strategies, SWOT.
Effect of Dosage and Frequency of Fertilization Application Potassium in Lowland Melon (Cucumis melo L.) Cultivation in Polybags Rahmadhanti, Viona; Nurlianti, Nurlianti; Sunarti, Sunarti; Rustianti, Sri; Asfaruddin, Asfaruddin
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.v13i3.914-923

Abstract

Melon cultivation is usually cultivated in the highlands, but the development of melon cultivation in the lowlands has the potential to be developed. The problem is that ultisol with low fertility dominates the soil in the lowlands. Cultivating melons in polybags makes it possible to provide ideal nutrients for plant needs. The right frequency of fertilization can provide appropriate nutrients for each phase of plant growth. The study aimed to determine the best dose and frequency of potassium fertilizer application and the interaction between the two on the growth and yield of melon plants and the sweet taste of melons. The study used a randomized block design (RBD). Factor I: Potassium dose (D) 4 levels: control: 0 g per plant, D1: 30, D2: 40, D3: 50. The second factor is the frequency of application of Potassium (F) consisting of 3 levels, namely: F1: 4 times, F2: 6, and F3: 8. The results of the study showed that the frequency of application of potassium fertilizer had a significant effect on the flowering age of melon plants. A potassium fertilizer dose of 50 g per plant (D3) gave the best fruit weight and diameter and a higher sweetness than other treatments. Keywords: Lowland, Fertilization frequency, Polybag cultivation, Potassium dosage.
Enhancing Mini Greenhouse Design: A CFD Analysis of Temperature, Humidity, and Wind Flow Distribution Putri, Irriwad; Aldi, Rahmah Tasya; Hasan, Ashadi
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.v13i2.381-393

Abstract

Research has been carried out on simulating the distribution of temperature, humidity and wind direction in a mini greenhouse using CFD ansys with several fan speed variations. This study aims to simulate the microclimate in a mini greenhouse, namely in the form of temperature, humidity and wind direction with variations in fan speed, namely with speeds of 1.7 m/s, 2.0 m/s and 2.2 m/s. Field measurement data regarding temperature, humidity (RH) in the tunnel-type mini greenhouse that has been carried out is used as input or input to the boundary conditions in the CFD mini greenhouse simulation. The results of the mini greenhouse CFD simulation using Ansys FLUENT are shown in the form of contour images of each condition. Temperature distribution contour, the humidity distribution contour (RH) and the airflow velocity distribution contour indicated by the vector will be used as the focus of this research. The numerical simulation shows quite good results when compared with the results of measurements in the field with the maximum error value obtained, which is 4.04%. Keywords: Computational Fluid Dynamics, Humidity, Simulation, Temperature, Wind direction.
The Implementation of Micro/Nanobubbles (MNBs) Technology to Treat Basin Water as The Primary Water Source for Hydroponics in Greenhouse Yusuf, Asep; Asdak, Chay; Muhaemin, Mimin; N.P, Sophia Dwiratna; Sugiarto, Anto Tri; Alam, Hilman Syaeful
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 1 (2024): March 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i1.197-204

Abstract

The greenhouse plays a pivotal role in creating an ideal environment for hydroponic cultivation. The greenhouse has utilized rainwater and basin water as a source of raw water for hydroponic farming. Presently, the water quality of Leuwi Padjadjaran basin fails to meet the standards required for hydroponics due to its turbidity, sediment content, discoloration, pH levels exceeding 7, and low dissolved oxygen (DO) concentration of 2.2 mg/l. The micro/nanobubbles (MNBs) technology stands as a viable method for water treatment owing to its capacity to bind impurities via radical OH. The application of MNBs for the treatment of basin water involves the use of a hydrodynamic cavitation MNBs generator with a dual-chamber rotating flow nozzle. The parameters evaluated in this research encompass DO concentration, MNBs stability, microbubble size, and the visual response to MNBs application. MNBs treatment was conducted with three different gases: air, oxygen, and ozone. Microbubbles were measured using the particle image velocimetry (PIV) method. The DO concentration reaches 21.6 mg/l when employing oxygen-based MNBs. On the third day post-generation, MNBs stability still maintains DO concentrations above the initial levels. Thus it can be used as hydroponic raw water.  Keywords:  DO concentration, Greenhouse, Micro/nanobubbles, Water treatment.
Breaking Dormancy of Shallot (Allium ascolonicum L.) Bulb Using Hydrogen Peroxide Nurfaida, Nurfaida; Syam'un, Elkawakib; Ulfa, Fachirah; Mantja, Katriani; Faried, Muhammad
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 1 (2024): March 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i1.205-212

Abstract

Shallot bulbs have a dormancy period, so they must be stored for 3-4 months. This condition inhibits the acceleration of planting, which has a short time, so efforts are needed to accelerate the dormancy period by using hydrogen peroxide. This research was carried out from June to July 2023 at the Screen House, Teaching Farm, Faculty of Agriculture, Hasanuddin University. The study was arranged in a randomized block design with a two-factor factorial design. The first factor is the variety of Mentes, Rubaru, Violetta 2 Agrihorti, Kramat 1, and Ambassador 3 Agrihorti. The second factor is hydrogen peroxide concentration with three levels, namely 0%, 10% and 20%. The results showed that breaking the dormancy of shallot bulbs using hydrogen peroxide at a concentration of 20% effectively triggered the process of bulb growth in the various shallot varieties tested, marked by an increase in the percentage of rooted and sprouted bulbs. The Rubaru and Mentes varieties had an excellent response to 20% hydrogen peroxide immersion, indicated by a shorter rooting and sprouting time, compared to other varieties and concentrations of hydrogen peroxide. Therefore, hydrogen peroxide with a concentration of 20% can be used to break dormancy in shallot bulbs. However, further studies are needed on growth and production in the field and the quality and safety of shallot bulbs. Keywords: Bulb, Dormancy, Hydrogen peroxide, Shallot.
Effect of Canopy Cover Level of Cacao and Shade Trees on Splash Erosion On Cacao Land Suhardi, Suhardi; Munir, Ahmad; Sapsal, Muhammad Tahir; Faridah, Sitti Nur; Iqbal, Iqbal; Sabaniah, Syahrial
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 1 (2024): March 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i1.82-91

Abstract

In smallholder cacao plantations, the protective crops used varied, so they have different effects on splash erosion. The management of land cover with a canopy of cacao and shade trees on cacao fields, aims to control of splash erosion. This study was conducted by directly measuring the magnitude of splash erosion under several levels of canopy cover. The magnitude of splash erosion was determined by measuring the depth of the eroded soil using the bottle cap method. The measurements were carried out every rain event (46 rain events with rainfall varied from 0.28 to 97.04 mm). The canopy cover level was determined by analyzing the images taken using a digital camera. The images were processed by Matlab software with closure approach. The data were analyzed by regression analysis to determine the relationship between canopy cover level and the depth of splash erosion that occurred. The results showed that the level of canopy cover influence the depth of splash erosion. In addition, this study indicates that the level of splash erosion not only influenced by the level of closure and rainfall, but also strongly influenced by the size of the leaf cover. Keywords: Cacao plantation, Canopy cover, Regression analysis, Splash erosion.
Application of Agro-industrial Solid Waste as Biochar for Iron (II) Removal from Aqueous Solution Rusnam, Rusnam; Yanti, Nika Rahma; Puari, Aninda Tifani; Sari, Nurmala
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 1 (2024): March 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i1.155-164

Abstract

In recent years, various industrial activities have introduced a high concentration of iron in the waterbody which causes serious problem to environment. This paper proposed the application of Exhausted Coffee Husk (ECH) as the biosorbent (BS) for removing iron (Fe) (II) in the aqueous solution. The ECH was carbonized into biochar before performing biosorption of the heavy metal ion. The effect of carbonization temperature, time and rate on the performance of the ECH biochar for removing Fe (II) were evaluated. The percentage of removal efficiency (RE) and the capacity of biosorption (mg/g) were considered as the determining parameters. The pyrolysis temperature was varied in a range of 200-600 °C with 50 °C of interval, while the time was in between 1h – 3h with a n interval of 0.5 h, and the temperature gradient of 5 – 25°C/min. The results showed that the temperature had a significant effect on the properties of the ECH biochar as BS for Fe (II). The temperature of 550 °C, at 1.5 h of time and 25 °C/min was chosen as the suggested carbonization temperature of biochar from ECH for biosorption of Fe (II).  Keywords:  Agro-industrial solid waste, Biosorption,  Carbonization, Exhausted coffee husk (ECH), Heavy metal.   
A Comparative Study of Respiratory Activity of Tropical Products under Two Storage Conditions Nugraha, Bayu; Rahmah, An-Nidaa' Fatkhur; Ayuningsih, Ira; Priyanti, Devi; Affandi, Fahrizal Yusuf
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 1 (2024): March 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i1.269-277

Abstract

This study aimed to investigate respiration process of Indonesian tropical products and its parameter to support the use of CAS. Shallot, dragon fruit and sneak fruit that are high-value and export-potential products in Indonesia were investigated. For respiration measurement, the fruits were kept in tightly closed jars. The ratio of fruit volume and free volume of jar (headspace) was determined to calculate the rate of fruit respiration. To observe the storage condition effects, the jars were stored in two different temperatures: low temperature (7±2°C) and room temperature (27±2°C). In cold temperature storage, changes in O2 and CO2 concentrations are slower than in room temperature storage. The rate of O2 consumption and CO2 production of products during storage decreased as the O2 concentration decreased for all conditions. Based on the dramatic increase of RQ value at low O2 concentrations, the low oxygen limits (LOLs) of shallot, sneak fruit and dragon fruit were estimated at around 7.5%, 4% and 2% O2 respectively, at the room temperature. However, the LOL was not detected yet at a cold temperature for 200 h of measurement due to a slow decrease of O2. The results showed that different products had different respiration activities so that the storage procedures should be different. A determination of model-based LOL and validation would be needed in the next research to be precisely applied on CAS. Keywords: Carbon dioxide, Dragon fruit, Shallot, Oxygen, Postharvest, Snake fruit.
Characteristics of Secang Jelly Drink as Functional Drink with the Addition of Red Ginger Extract for Antioxidant Source Agusthi, Bevhia Moza; Romadhan, Muhammad Fajri
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.v13i2.449-458

Abstract

Secang wood (Caesalpinia sappan L.) and red ginger can be used as alternative functional drinks in form of jelly drinks, due to the antioxidant properties contained in these two ingredients. In this study, we wanted to know the characteristics of secang jelly drinks with addition of red ginger extract at various concentrations. The research was conducted with ginger extract concentrations of 20% (J1), 25% (J2), 30% (J3), 35% (J4), and 40% (J5) executed completely random. The results of the research regarding the characteristics of secang jelly drink with the addition of red ginger extract have significant differences (p<0.05) for viscosity, pH value, antioxidant activity, and sensory as well as hedonic quality. The best treatment is obtained from red ginger extract concentration of 35% with an average viscosity of 986.7 cP, pH of 4.47, antioxidant activity with an IC50 value of 72.97 (strong), sensory score for aroma, texture, and taste is 5, hedonic quality score for aroma, texture, and taste is 4. This treatment also results in average total flavonoid content of 24.29 mg/100 g. No heavy metal contamination was found and total plate number was <102 colonies/mL. Keywords: Antioxidant, Functional drink, Jelly drink, red ginger, Secang woods.

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