The document outlines the progress and activities of the System of Rice Intensification (SRI) project in Cambodia from 2004 to 2016, highlighting the initial introduction of SRI, its integration into national plans, and participatory research involving farmers. Among the key objectives were improving understanding of SRI principles, promoting farmer participatory action research, and enhancing rice production in rain-fed ecosystems. Lessons learned emphasize the significance of early engagement, proper training, and addressing local farming conditions for successful implementation.