Designing a Sugarcane Based Raw Material Procurement Model for the Sugar Industry
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This study aims to design a system dynamics model to analyze and improve sugarcane-based procurement at PT Sukses Mantap Sejahtera (PT SMS). The model integrates three subsystems—plantation, production, and demand—to represent the interactions among supply sources, milling capacity, and regional sugar needs. Model validation using Theil's Inequality Statistics confirms the simulation results with actual data, indicating that most deviations arise from random noise rather than systematic bias. Five policy scenarios were designed to enhance system performance: (1) increasing sugarcane prices, (2) introducing subsidies for machinery rental and fertilizers, (3) improving sugarcane yield to 7.68%, (4) expanding livestock routes in the nucleus estate to 210 hectares, and (5) combining Scenarios 2, 3, and 4. Scenario 5 demonstrates the best performance, increasing sugarcane and WCS production by 4.06% and 8.32% annually. By 2030, sugarcane reaches 510,396.56 tons (+6.74%) with 68.05% milling utilization, producing 39,198.46 tons of WCS (+12.14%) and meeting 64.91% of demand in Eastern Indonesia. These results underscore the importance of integrated management, stakeholder collaboration, and Good Agricultural Practices.
Wahyu Adi Guna, Industrial Engineering and Management, IPB University
was born in Kelantih, Central Lombok, West Nusa Tenggara, on Sept. 17, 1999. He completed his Bachelor’s degree in Agricultural Engineering at the University of Mataram, Mataram City, West Nusa Tenggara, in 2022. He is currently pursuing a Master’s degree in Agroindustrial Engineering, with a concentration in Industrial Engineering and Management, at IPB University, Bogor, West Java. His research interests include system dynamics modeling for agroindustry. He can be contacted at email: wahyugunaadi@apps.ipb.ac.id or wahyuadiguna1999@gmail.com.
Prof. Dr. Hartrisari Hardjomidjojo , Faculty of Agroindustrial Technology, IPB University
is a lecturer at the Department of Agroindustrial Technology, Faculty of Agroindustrial Technology, IPB University, Bogor, West Java. She graduated from IPB University in Agroindustrial Technology in 1984, from ENGREF, Paris, France, where she obtained her DEA in 1989, and a Ph.D. in Biosystem Engineering, majoring in System Dynamics Modeling. As a scientist, she has been involved in various projects concerning modeling of system dynamics for industries, environment, and policy analysis. Since 2023, she has been a Professor of systems engineering at IPB University. She is also a researcher at SEAMEO BIOTROP. She can be contacted at email: hartisari@apps.ipb.ac.id
Prof. Dr. Ir. Marimin , Faculty of Agroindustrial Technology, IPB University
is a lecturer at the Department of Agroindustrial Technology, Faculty of Agroindustrial Technology, IPB University, Bogor, West Java. He received the B.S. degree with honors in agro-industrial technology from IPB University in 1984, the M.Sc. degree in computer science from the University of Western Ontario, Canada, in 1990, and the Ph.D. degree from the Faculty of Engineering Science, Osaka University, Japan, in 1997. Since 2003, he has been a Professor of systems engineering at IPB University. His research interests include intelligent and fuzzy expert systems, multiple-criteria decision making, intelligent decision support systems, and sustainable supply chain management. He is a member of the Institute of Electrical and Electronics Engineers (IEEE), the Indonesian Engineers Association, and the Indonesian Logistics and Supply Chain Management Association. He can be contacted at email: marimin@ipb.ac.id
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Copyright (c) 2026 Wahyu Adi Guna, Prof. Dr. Hartrisari Hardjomidjojo , Prof. Dr. Ir. Marimin
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