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Department of Agricultural and Biological Engineering, Faculty of Agriculture Lampung University Jl. Soemantri Brojonegoro No. 1, Kedaton, Bandar Lampung, Lampung. 35145
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INDONESIA
Jurnal Agricultural Biosystem Engineering
Published by Universitas Lampung
ISSN : -     EISSN : 28304403     DOI : -
Core Subject : Science, Agriculture, Social, Engineering,
Agriculture, Biological Sciences & Forestry Automotive Engineering Civil Engineering, Building, Construction & Architecture Engineering Environmental Science Materials Science & Nanotechnology
This journal focuses on agriculture, biosystems and agricultural techniques. Covering power and agricultural machinery, agricultural cultivation, renewable energy, bioprocessing of agricultural products, environmental civil engineering, agricultural irrigation, robotics, automatic control in agriculture, design of agricultural machinery and tools, ergonomics in agriculture, and nanotechnology.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 191 Documents
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Analisis Laju Perubahan Alih Fungsi Lahan Sawah di Wilayah Kabupaten Pringsewu Nuraini, Intan; Ridwan, Ridwan; Wisnu, Febryan Kusuma; Asmara, Sandi
Jurnal Agricultural Biosystem Engineering Vol. 4 No. 2 (2025): June 2025
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v4i2.11105

Abstract

Pringsewu Regency experienced land conversion to increasing land needs. Some of the impacts that can arise as a result of this land conversion include reduced agricultural land, threatened ecosystem balance, agricultural facilities and infrastructure becoming unused, higher urbanization rates, and decreased food production. To study and see how fast the function of rice fields in Pringsewu Regency is changing, a study was carried out regarding the rate of change in the function of rice fields in Pringsewu Regency by utilizing remote sensing techniques with a geographic information system.The results of the research show that there is a trend of decreasing vegetation density levels with the highest decrease in Sukorejo Village (53.37%), a trend of increasing building density levels with the highest increase in Sukorejo Village (45.87%), and a trend of increasing land wetness levels with the highest increase in Bulurejo Village (85.52%) between 2008 - 2022 and obtained a mathematical model Y = 10.7326 - 0.5190 X1 - 0.4007 to predict the rate of change in the conversion of rice fields in the Pringsewu Regency area. Keywords:  Geographic Information System, Land conversion, NDBI, NDVI, NDWI.
Analisis Resiko Ergonomi Pengolahan Tanah Menggunakan Traktor Tangan dengan Nordic Body Map (NBM) Anggraini, Nurvita; Suharyatun, Siti; Rahmawati, Winda; Warji, Warji
Jurnal Agricultural Biosystem Engineering Vol. 4 No. 2 (2025): June 2025
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v4i2.11107

Abstract

Continuous tillage using hand tractors requires high physical strength and involves non-ergonomic body postures. Work involving heavy physical activity, especially with improper working postures can cause musculoskeletal injuries or musculoskeletal disorders/ MSDs). This study aims to identify the level of musculoskeletal disorders (MSDs) of hand tractor operators in tillage using the Nordic Body Map (NBM) method. The study was conducted in Banjar Agung Village, East Lampung, involving operators aged 30–40 years and operators aged 40–50 years. Data were obtained through interviews to fill out the NBM questionnaire. The results of the NBM analysis showed that tillage activities using two-wheeled tractors by operators aged 30–40 years did not require immediate treatment with a Likert scale of 1 (light risk level) and that by operators aged 40–50 years required immediate treatment with a Likert scale of 2 (high risk level). Keywords:  Hand Tractor, Nordic Body Map (NBM), Musculoskeletal Disorders (Msds), Soil Tillage.
Pengaruh Suhu dan Ketebalan Irisan terhadap Kualitas Keripik Ubi Jalar Oranye (Ipomoea batatas L.) Menggunakan Penggorengan Vakum Novita, Dwi Dian; Aliftama, Althoriq Rizky; Asmara, Sandi; Kuncoro, Sapto
Jurnal Agricultural Biosystem Engineering Vol. 4 No. 2 (2025): June 2025
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v4i2.11108

Abstract

Processing orange sweet potato (Ipomoea batatas L.)  into chips has the potential to increase the economic value of fresh products.  The aim of this research was to study the effect of frying temperature and slice thickness on the quality parameters of orange sweet potato chips and determine the best treatment.  The test was carried out by adjusting the frying temperature at three levels (70 °C, 80 °C, and 90 °C) and the slice thickness at three levels (1 cm, 1.5 cm, and 2 cm).  The research results showed that the temperature factor had a significant effect on frying time and water content.  Meanwhile, the thickness factor has a significant effect on frying time, yield, water content and crispness.  The best treatment in this study was S2K1 (frying temperature 80 °C, slice thickness 1 cm) which produced orange sweet potato chips with a crispness score of 3.1, water content 2.77%, yield 24.89%, and frying time of 67 minutes. Keywords:  AB Mix, Fruit Waste, Liquid Organic Fertilizer, Red Spinach, SAT Hydroponics,
Pemanfaatan Jerami Padi Sebagai Bahan Campuran Briket Biocoal: Analisis Karakteristik Fisik dan Laju Pembakaran Dibandingkan Briket Konvensional Maktub, Zana Azalia; Tamrin, Tamrin; Lanya, Budianto; Kuncoro, Sapto
Jurnal Agricultural Biosystem Engineering Vol. 4 No. 2 (2025): June 2025
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v4i2.11131

Abstract

This study aims to examine the effect of different percentages of rice straw as a blending material in biocoal briquettes on their physical properties and combustion performance. Four variations of rice straw content were used: 16%, 31.9%, 47.7%, and 63.7%. The results showed that briquette density decreased with higher rice straw content, from 765.13 kg/m³ at 16% to 466.34 kg/m³ at 63.7%. Mechanical strength also varied: tensile stress reached 100,109.99 N/m² at 16% and dropped to 85,480.03 N/m² at 63.7%, while compressive strength ranged from 71,902.06 N/m² to 62,909.68 N/m². Drop tests indicated that higher rice straw content generally reduced impact resistance. Combustion tests revealed that briquettes with higher rice straw content ignited faster and burned more quickly, with a maximum combustion rate of 2.81 g/min for the 63.7% mixture compared to 1.73 g/min for the 16% mixture. However, the calorific value decreased as rice straw percentage increased, from 4,968.53 kcal/kg to 4,011.97 kcal/kg, while moisture content rose from 26.40% to 37.93%. Analysis of variance (ANOVA) for combustion rate confirmed a significant effect of rice straw proportion (F = 10.93; BNT 5% = 0.2998). Compared to conventional briquettes, rice straw biocoal briquettes showed competitive combustion performance but slightly lower mechanical durability. This study demonstrates the potential of utilizing rice straw as an alternative biomass material to produce environmentally friendly biocoal briquettes with acceptable physical properties and enhanced combustion rates. Keywords: Biocoal briquettes, rice straw, density, tensile stress, compressive strength, combustion rate, calorific value.
Effectiveness of Cassava Harvesting by Applying Harvesting Implement Warji, Warji; Asmara, Sandi; Hidayat, Kuswanta Futas; Sanjaya, Purba; Endaryanto, Teguh
Jurnal Agricultural Biosystem Engineering Vol. 4 No. 3 (2025): September 2025
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v4i3.11557

Abstract

Cassava is one of Indonesia’s leading food commodities, especially in Lampung Province. However, cassava harvesting is still predominantly done manually, which is time-consuming, labor-intensive, and prone to crop damage. This study aims to evaluate the effectiveness of cassava harvesting using a Kubota mechanical harvesting implement compared to traditional manual methods. The research was conducted in Bandar Mataram District, Central Lampung Regency, over an area of 0.75 hectares and observed parameters including harvest time, tuber damage, losses, and labor efficiency. Results showed that the harvesting implement significantly improved efficiency, allowing one machine to harvest up to 1.07 hectares per day, compared to only 0.045 hectares per day per person using manual labor. Tuber damage and losses were also reduced from 7% in manual harvesting to 1.59% with the implement. Furthermore, the implement created soil ridges suitable for direct replanting without further tillage. Despite its advantages, some operational weaknesses were identified, such as the need for stem cutting and transportation improvements. Overall, the use of mechanized harvesting tools enhances cassava farming efficiency and has the potential to reduce labor dependency and improve farmer productivity.
Uji Kinerja Alat Chopper Serbaguna Untuk Merajang Batang Singkong Varietas Bayeman Asmara, Sandi; Tamrin, Tamrin; Zakaria, Rizky
Jurnal Agricultural Biosystem Engineering Vol. 4 No. 3 (2025): September 2025
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v4i3.11591

Abstract

Cassava production not only produces tubers and leaves that can be used asvegetables, but there is also waste produced, one of which is cassava stems. Sofar, cassava stem waste has not been widely utilized by farmers, so after thecassava is harvested, the cassava stems are just left lying on the land. This studyaims to reduce cassava stem waste by reducing the size using a multi-purposeChopper tool with several variations in engine rotation per minute (RPM). Thisresearch was conducted at the Agricultural Machinery and Equipment PowerLaboratory, Department of Agricultural Engineering, Faculty of Agriculture,University of Lampung in March 2025. The treatment used 3 variations of RPM,namely 1500, 1800, and 2100 where each used 3 different input amounts, namely:input of 3 stems, 4 stems, and 5 stems and each RPM was repeated 3 times. Theresults showed that chopping using the RPM setting of 2100 and the input amountof 4 cassava stems had the best work capacity with a value of 150.8 kg/hour. Thelowest fuel consumption using RPM variation of 1500 and the amount of input of3 sticks with a value of 591.6 ml/hour.
Kinerja Pengering dan Karakteristik Penepungan Daun Singkong (Manihot esculenta C) Demato, Pingkan Najua; Suharyatun, Siti; Tamrin, Tamrin; Warji, Warji
Jurnal Agricultural Biosystem Engineering Vol. 4 No. 3 (2025): September 2025
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v4i3.11592

Abstract

Cassava is one of the agricultural products that is abundant in Indonesia. The potential for cassava processing is very large along with the development of industry and leaving waste in the form of cassava leaves whose utilization is still limited. Cassava leaves are green vegetables that have nutritional content of protein, vitamins, and minerals. However, cassava leaves have the characteristic of being easily damaged because cassava leaves have a highwater content, allowing enzyme activity to occur. This causes cassava leaves not to be utilized optimally even though cassava leaves have a high protein content. Drying using a convection oven is an effective way to increase shelf life. The use of a hybrid dryer is an effective choice for drying cassava leaves. Material testing using electricity and solar power (hybrid) is carried out for 6 hours. Material testing using an oven is carried out for 4 hours. Testing using direct solar power (traditional) is carried out by drying for 6 hours. Proximate analysis is one method that has often been used to determine the nutritional content of raw materials or food. From the results of testing the proximate content of cassava leaf flour using a hybrid dryer, it was obtained; water content 3.18%, ash content 4.92%, fiber content 13.12%, protein 20.06%, fat content 5.18%, and BETN 66.66%. Drying using an oven, namely, water content 5.96%, ash content 5.99%, fiber content 15.72%, protein 16.132%, fat content 4.35%, and BETN 67.58%. Drying using solar energy (traditional), namely, water content 6.94%, ash content 4.98%, fiber content 16.48%, protein 16.84%, fat content 3.66%, and BETN 67.58%.
Pengaruh Ukuran dan Warna Kerabang Telur Itik Terhadap Hasil Pengasinan Purba, Rio Edy Saputra; Tamrin, Tamrin; Rahmawati, Winda; Warji, Warji
Jurnal Agricultural Biosystem Engineering Vol. 4 No. 3 (2025): September 2025
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v4i3.11595

Abstract

This study aims to study the effect of shell color and duck egg size on salting results. The method used in this study is a factorial Completely Randomized Design (CRD) with 3 treatment levels and 3 replications. The first factor is egg size and the second factor is duck egg shell color. The parameters observed were thickness, weight changes, texture, NaCl, and organoleptics such as aroma, color, texture, saltiness and preference. Data from the observation results will be analyzed using analysis of variance (ANOVA) followed by the HSN (Honest Significant Difference) test if there is a significant effect. The results showed that the treatment of duck egg shell size had a significant effect (Fhit>Ftab) on the thickness of texture, NaCl, aroma organoleptic and texture of mash. Then the interaction of treatments had a significant effect (Fhit>Ftab) on organoleptic mash. While the color treatment did not have a significant effect (Fhit<Ftab) on all parameters. The conclusion obtained in this study is that the larger the egg size, the higher the thickness, texture, organoleptic aroma and flavor values of salted duck eggs, while the NaCl content is lower.
Pengeringan Kacang Tanah Menggunakan Energi Panas Pembuangan AC Puspitasari, Indah; Tamrin, Tamrin; Rahmawati, Winda; Warji, Warji
Jurnal Agricultural Biosystem Engineering Vol. 4 No. 3 (2025): September 2025
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v4i3.11596

Abstract

This study aimed to determine the effectiveness of the peanut drying process by utilizing waste heat from an air conditioner (AC) condenser, using two types of drying systems: horizontal and vertical heat flow. The results showed that the vertical heat flow dryer was more effective, achieving a consistent final moisture content of below 6% (in accordance with SNI 01-3921-1995) within 18 hours, with stable temperatures ranging from 38–40°C and RH below 50%. In contrast, the horizontal heat flow dryer resulted in uneven moisture content (3–14%) with less stable temperature and RH conditions. The drying rate constant (k) was higher in the vertical dryer, indicating a faster rate of water evaporation. Based on these findings, it can be concluded that waste heat from an AC condenser can be utilized as an alternative energy source. The vertical heat flow dryer is more efficient in reducing the moisture content of peanuts to meet storage quality standards.
Monitoring VPD (Vapor Pressure Deficit) pada Greenhouse dengan Ventilasi Alamiah Apriyatama, Muhammad Ivanka; Tusi, Ahmad; Rahmawati, Winda; Suhandy, Diding
Jurnal Agricultural Biosystem Engineering Vol. 4 No. 3 (2025): September 2025
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v4i3.11606

Abstract

Greenhouses with natural ventilation face challenges in maintaining a stable microclimate, particularly in managing air temperature and humidity, which affect the Vapor Pressure Deficit (VPD). This study aimed to monitor and analyze VPD levels inside a naturally ventilated greenhouse using misting (fogging) treatments at different heights, in order to determine the most effective strategy for VPD control. The research was conducted at the Department of Agricultural Engineering, University of Lampung, using three treatments: no fogging (T1F0), fogging at 50 cm (T2F50), and fogging at 100 cm (T3F100) above the plant canopy. Temperature and humidity data were collected using DHT22 sensors and a hygrometer, and used to calculate VPD values. The results showed that the 50 cm fogging treatment (T2F50) effectively reduced VPD to an average of 0.97 kPa, which is within the optimal range (0.5–1.2 kPa) for plant growth. In contrast, the no-fogging treatment produced the highest VPD value (2.17 kPa), which could cause plant stress. Statistical analysis (ANOVA and LSD test) indicated that fogging height significantly influenced VPD values, especially under hot weather conditions. Therefore, fogging at 50 cm is recommended as the most effective treatment for maintaining optimal VPD in naturally ventilated greenhouses.

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