This research paper explores the integration of Digital Twins (DTs) into smart agriculture within a Circular Economy (CE) framework. The study investigates the potential of Digital Twins to simulate and optimize agricultural processes, thereby enhancing resource efficiency and reducing waste. It delves into the system design architecture required for robust Digital Twins implementation in agriculture. Through a multidisciplinary approach, the paper aims to provide a comprehensive understanding of how Digital Twins can transform agricultural practices, promote sustainability, and contribute to a more efficient agricultural sector. Additionally, the research proposes the development of a training platform using Digital Twins technology to enhance the digital literacy and skills of farmers, facilitating the adoption of smart farming practices across Asia.