Jurnal Agricultural Biosystem Engineering

Preface March 2026

2026-05-16T05:53:38+00:00

Cover March 2026

2026-05-16T05:47:40+00:00

Pengaruh Dosis Penambahan Biochar Sekam Padi pada Tanah Pasir Terhadap Infiltrasi dan Kemampuan Tanah Menahan Air ( Water Holding Capacity )

2026-01-20T12:40:19+00:00

Sandy soil is characterized by a high infiltration rate and low water retention capacity, making it less effective in supplying water for plant growth. This study aimed to analyze the effect of rice husk biochar application on infiltration and water retention capacity in sandy soil. The experiment was conducted from July to August 2024 at the Greenhouse of the Department of Agricultural Engineering, Faculty of Agriculture, University of Lampung. Four treatments were applied: A1 (0% biochar), A2 (10%), A3 (15%), and A4 (20%), each replicated three times. Observed parameters included soil moisture content, infiltration rate, water holding capacity, and the duration of water content change. Results indicated that rice husk biochar addition reduced the infiltration rate of sandy soil, with the lowest value observed in A4 (20%) at 6.42 mm/hour compared to the control A1 (0%) at 7.89 mm/hour. The time required for soil moisture to decrease from 14% to 8% was shortest in A1 (96 hours) and longest in A4 (456 hours). It can be concluded that rice husk biochar enhances the water retention ability of sandy soil and slows down moisture loss, with the 20% dose being the most effective treatment in improving water holding capacity.

Unjuk Kerja Mesin Perajang Biomassa Tipe Slicer untuk Perajangan Pelepah Kelapa Sawit

2026-01-20T12:50:52+00:00

This study aimed to evaluate the performance of a slicer-type biomass chopper in processing oil palm fronds at different engine speeds (2000, 2350, and 2700 rpm). The observed parameters included working capacity, fuel consumption, material losses, and ergonomic aspects. The results showed that variations in engine speed significantly affected machine performance. The highest working capacity was achieved at 2700 rpm, reaching 465.96 kg/h, while the lowest was at 2000 rpm with 185.04 kg/h. Fuel consumption ranged from 1.29 to 1.70 L/h, with the lowest value at 2000 rpm and the highest at 2700 rpm. The lowest material loss was recorded at 2000 rpm (0.95%), whereas the highest occurred at 2700 rpm (2.44%). Ergonomic analysis indicated that the Cardiovascular Load (CVL) ranged from 31% to 36%, categorized as moderate workload and still tolerable for operators. Overall, the best performance was obtained at 2700 rpm due to its highest working capacity with relatively acceptable losses.

Evaluasi Daerah Tangkapan Air Bendungan Way Rarem Terhadap Simpanan Air Waduk Berbasis Citra Landsat

2026-01-20T12:28:50+00:00

This study aims to evaluated condition of the water the catchment area. This study evaluates the condition of the Way Rarem Dam water catchment area agains reservoir water storage using Landsat 7 ETM+ and Landsat 8 OLI imagery. The integration of NDVI and NDWI indices was used to map vegetation density and surface water extent from 2009 to 2025. The results show that the catchment area is dominated by medium to high vegetation density with an average NDVI values of 0.26–0.37, while NDWI values ranging from –0.34 to –0.21 reflect predominantly non-water surfaces. A strong correlation between NDVI and NDWI (R² = 0.719) indicates that vegetation density influences approximately 71.9% of the variation land wetness conditions. The water storage volume reached its maximum capacity in 2020 at 43.66 million m³ than decreased in 2024 to 2025 due to vegetation degradation and sedimentation. These findings emphesize the importance of vegetation cover in maintaining water storage capacity and hydrological stability in the Way Rarem Dam catchment area.

Proses Pengeringan Lengkuas Merah (Alpinia purpurata) Menggunakan Pengering Hybrid Tipe Rak dan Sifat Fisik Bubuk yang Dihasilkan

2026-05-07T16:16:40+00:00

Indonesia is estimated to have 100 to 150 plant families, one type of plant that is widely used by Indonesian people as one of the spices is galangal. Fresh galangal rhizomes contain high water, so post-harvest handling efforts are needed to increase the shelf life of galangal. The rack-type hybrid drying house is an alternative technology for drying agricultural products. The purpose of this study was to test the rack-type hybrid drying house for drying red galangal. This drying was carried out with three treatments with three repetitions, namely drying using a rack-type hybrid drying house, drying using an oven and drying using direct sunlight. Observations made to determine the physical properties of the resulting red galangal powder include measuring colour, measuring bulk density, measuring stack angle, measuring water absorption, and the degree of fineness of the material. Drying red galangal to reach 10% water content in drying using a rack-type hybrid dryer takes 17 hours, drying using an oven takes 13 hours and drying using solar energy takes 25 hours. Temperature and drying treatment affect the density value of red galangal powder.

Analisis Kinerja dan Ergonomika Mesin Perajang Biomassa Tipe Slicer pada Pengolahan Batang Jagung

2026-05-09T16:14:58+00:00

Corn (Zea mays) production generates a significant amount of agricultural waste, particularly corn stalks, which are often underutilized and may cause environmental problems if not properly managed. This study aimed to evaluate the performance and ergonomics of a slicer-type biomass chopper in processing corn stalks. The experiment was arranged using a completely randomized factorial design with two factors: machine rotational speed (1500, 2000, and 2700 rpm) and the number of input stalks (4, 5, and 6 stalks), with three replications for each treatment. The observed parameters included working capacity, fuel consumption, specific fuel consumption, losses, and ergonomic aspects. The results showed that the treatments significantly affected all observed parameters. The highest working capacity was obtained at treatment R3M6 (791.2 kg/h), while the lowest fuel consumption and specific fuel consumption were found at R1M4. The lowest losses were observed at R2M6 (1.118%). Overall, treatment R3M6 demonstrated the best performance by providing a balance between high productivity and acceptable fuel efficiency. Ergonomic evaluation indicated that the machine could be operated adequately, although higher operational levels may increase operator workload. Therefore, the slicer-type biomass chopper has strong potential for improving the utilization of corn stalk waste in a more efficient and sustainable manner.

Pemanfaatan Limbah Serbuk Kayu Sengon (Albizia falcataria L) Sebagai Bahan Tambah Pembuatan Paving Block Porous

2026-05-12T06:50:49+00:00

This study aims to create porous paving blocks with the addition of sengon wood powder as an alternative solution to improve the quality of soil pavement in densely populated areas. The porous paving blocks were made with a cement-to-sand ratio of 1:3, and variations in the addition of sengon wood powder P1 (2%), P2 (4%), P3 (6%), and P4 (8%) of the total material weight of 2200 grams. The resulting porous paving blocks have dimensions of 19.8 × 9.8 × 6 cm with an average weight of 1,859 g. Test results show a density of 1,341–1,921 g/m³, water absorption of 11.002–23.567%, infiltration rate of 0.069–0.146 mm/s, and compressive strength of 2.90–14.32 MPa. The composition of P1 had the best values, with an average compressive strength of 14.315 MPa and an average water absorption rate of 11%, meeting the standards of SNI 03- 0691-1996 Paving Block Grade D. This study shows that porous paving blocks made from sengon wood powder can serve as an alternative pavement material to address waterlogging in urban or densely populated areas and contribute to the utilization of agricultural waste, particularly wood powder waste

Prototipe Portabel Berbasis pH dan Turbiditas untuk Estimasi Cepat Asam Lemak Bebas pada Minyak Sawit Mentah

2026-05-13T05:48:09+00:00

Free fatty acid is an important parameter in determining the quality of crude palm oil. High free fatty acid content can reduce oil quality and cause economic losses in palm oil processing. The conventional method commonly used to determine free fatty acid content is acid-base titration, but this method requires chemicals, laboratory equipment, and relatively long analysis time. This study aimed to design a portable device for rapid detection of free fatty acid content in crude palm oil using pH meter, turbidity meter, and artificial neural network. Oil samples were obtained from oil palm fruitlets with different physical damage levels. Free fatty acid content was measured using titration, while pH and turbidity were used as input variables in the artificial neural network model. The results showed that pH had a relationship with free fatty acid content with a coefficient of determination of 0.3516, while turbidity had a stronger relationship with a coefficient of determination of 0.7636. The best artificial neural network model was obtained using the tansig-logsig-logsig activation function, with R² of 0.9501 and RMSE of 0.6390 in calibration. In the testing stage, the model produced R² of 0.8061 and RMSE of 1.9222. The developed prototype can be used as a rapid method to estimate free fatty acid content in crude palm oil.

Pengaruh Coating Telur Asin Terhadap Umur Simpan

2026-05-12T08:03:20+00:00

Eggs are one of the most preferred sources of protein by people in Indonesia because of their high nutritional content and affordable prices. Purebred chicken eggs are easy to find in various places such as stalls, traditional markets, to supermarkets. Even though there is a lot of demand, purebred chicken eggs have a shelf life that doesn't last long and is easily damaged. The duration of egg storage will result in decreased egg quality so it is necessary to have a process that can extend the shelf life of the eggs, one of which is by salting the eggs. Marinated chicken eggs are made by soaking in a salt solution. However, the shelf life of the salted eggs can only last for about 3 weeks. This study aims to study the effect of coating on salted chicken eggs on shelf life, changes in weight, aroma, color, taste, and texture of salted chicken eggs. This study used a randomized block design (RBD) with 3 coating treatments and 3 coating concentration treatments, repeated 3 times. Salted eggs with tapioca flour coating treatment with concentrations of 2%, 4%, 6% can last for 13 days, 34 days, and 23 days. Then the beeswax coating treatment with a concentration of 2%, 4%, 6% can last for 20 days, 22 days, and 18 days. Then the chitosan coating treatment with a concentration of 2%, 4%, 6% can last for 20 days, 22 days and 21 days. Based on this study, it can be concluded that tapioca flour coating with a concentration of 4% had an effect on shelf life, aroma, color, taste and texture of salted chicken egg but had no effect on changes in weight.

Kajian Penyebaran Penyakit Erwinia (Erwinia chrysanthemi) pada Buah Nanas (Ananas comosus (L.) Merr.) Selama Penyimpanan

2026-05-14T17:07:12+00:00

Pineapple is one of Indonesia’s leading horticultural commodities with high economic value; however, its postharvest quality and shelf life are often reduced by infection of Erwinia chrysanthemi, the causal agent of Soft Rot. This study aimed to investigate the spread of fruit rot disease in pineapple during postharvest storage through direct contact between infected and healthy fruits, to observe the early symptoms and incubation period of the disease, and to evaluate the relationship between bruising, E. chrysanthemi infection, and fruit weight loss during storage. Observations were conducted on disease development, bruising incidence, bacterial infection percentage, and fruit weight loss throughout the storage period. The results showed that E. chrysanthemi transmission occurred through direct contact between healthy and infected fruits. Early symptoms of infection were characterized by tissue softening, mucus formation on the fruit surface, and a distinctive rotten odor. The incubation period ranged from 4 to 12 days depending on storage conditions. Regression analysis demonstrated that bruising level was strongly associated with the development of E. chrysanthemi infection, with a coefficient of determination (R²) of 0.8097. Furthermore, E. chrysanthemi infection was strongly associated with increased fruit weight loss, with an R² value of 0.8865. Bruising caused tissue damage that facilitated bacterial invasion, while infection development accelerated tissue degradation and water loss, leading to greater weight loss during storage. These findings highlight the importance of minimizing mechanical damage and implementing proper postharvest handling practices to reduce disease spread and maintain pineapple fruit quality during storage and distribution.

Uji Kinerja Mesin Chopper Serbaguna untuk Memperkecil Ukuran Pucuk Tebu

2026-05-09T16:16:23+00:00

This study aimed to evaluate the performance of a multipurpose chopper machine in reducing the size of sugarcane tops as a means of utilizing agricultural biomass waste. The research was conducted at the Laboratory of Power and Agricultural Machinery, Faculty of Agriculture, University of Lampung, using a factorial Completely Randomized Design (CRD) with two factors: engine rotation speed (1500, 1700, and 2000 rpm) and feed input (3, 4, and 5 stalks of sugarcane tops). The parameters observed were work capacity, material losses, fuel consumption, and chopping uniformity. The results revealed that both engine speed and feed input had a highly significant effect on all performance parameters. Increasing engine speed enhanced work capacity up to 172.2 kg/hour, reduced material losses to 8.58%, and maintained efficient fuel consumption at 966 ml/hour under the 2000 rpm and 4-stalk combination. The multipurpose chopper machine proved to be effective and efficient in reducing the size of sugarcane tops, making it suitable for use as biomass fuel or alternative livestock feed.