The study examines the indigenous practices among tribal communities in the Lower Subansiri District of Arunachal Pradesh area to document the indigenous practices followed in agriculture. The study was conducted in the year of 2018 and the information was collected using a structural schedule, semi-structured interviews, photo documentation, field observation, and respondent observation from the study area. This study contends that indigenous knowledge with scientific reason should be identified and applied to agriculture fields. It also discusses the challenges of proposing this indigenous knowledge in the research area, as well as a plan for employing to know the knowledge level in agriculture to achieve food security, livelihood, and ecological balance on a long-term basis. For the study, a total of 120 people were chosen. Finally, it can be concluded from this research that accurate identification and documentation will lead to food security and sustainability in the study area provided appropriate extension interventions for indigenous knowledge are implemented.