https://talenta.usu.ac.id/jsabe <p>JSABE (Journal of Sustainable Agriculture and Biosystems Engineering) is an international journal that was previously named the Bulletin Agricultural Engineering (BEARING). Since 2005, BEARING has been published several papers in printing journal with ISSN 1858-2362. In 2022, BEARING is converted to be JSABE journal which is a peer-reviewed journal published by TALENTA Publisher and Organized by the Department of Agricultural and Biosystems Engineering, Faculty of Agriculture, Universitas Sumatera Utara (USU) as an open-access journal. JSABE publishes agricultural and biosystem engineering research that represents advances in understanding or modelling biological systems' performance for sustainable developments in land use and the environment, bio-production processes and food technologies. The journal's subject matter reflects the wide range and interdisciplinary nature of research in engineering for biological systems.</p> en-US riswanti@usu.ac.id (Riswanti Sigalingging) pputricandra@usu.ac.id (Putri Chandra Ayu) Thu, 29 Feb 2024 16:34:14 +0700 OJS 3.2.0.2 http://blogs.law.harvard.edu/tech/rss 60 https://talenta.usu.ac.id/jsabe/article/view/14683 <p>Organic vegetable and fruit waste may be used for green energy. Electrolyte-rich fruits can be used to make pollution-free bio-batteries. This study measures fermentation temperature and environment, pH before and after fermentation, electrical voltage, current, power, resistance, and energy in starfruit (Averrhoa carambola), mango (Mangifera indica), and strawberry (Fragaria) waste for 8, 10, and 12 days. A fully randomized factorial design was used for the experiment. The investigation concluded that 8-day strawberry waste fermentation was the optimum treatment. Temperature after fermentation was 28°C, ambient temperature was 29°C, pH before fermentation was 4, after fermentation was 3.2, voltage was 2.97 volts, current was 3.65 mA, power was 10.84 mW, resistance was 1,297 Ohm, and electrical energy was 73.32 mWh.</p> Riswanti Sigalingging, Yohana Sitorus Copyright (c) 2024 Riswanti Sigalingging, Yohana Sitorus https://creativecommons.org/licenses/by-sa/4.0 https://talenta.usu.ac.id/jsabe/article/view/14683 Thu, 29 Feb 2024 00:00:00 +0700 https://talenta.usu.ac.id/jsabe/article/view/14720 <p>Erosion could be a sign of natural resources damage. It’s important to prevent the erosion that had to predict in each land cover to sustainability of natural resources. This study aimed to predict the erosion value in each land cover unit using Universal Soil Loss Equation (USLE) Method with Geographic Information System. The study showed that the highest erosion occurs in residential area which valued 138.11 ton/ha/year and the lowest occur in pond that valued 0.3 ton/ha/year. The highest erosion hazard level occur in residential area that classify moderate (III) and the lowest erosion hazard level is pond that classify low hazard level (I).</p> Sepriadi Tarigan , Delima Lailan Sari Nasution Copyright (c) 2024 Sepriadi Tarigan , Delima Lailan Sari Nasution https://creativecommons.org/licenses/by-sa/4.0 https://talenta.usu.ac.id/jsabe/article/view/14720 Thu, 29 Feb 2024 00:00:00 +0700