<![CDATA[Introduction: The transformation of agribusiness partnerships in hybrid corn farming has become an important strategy for improving the sustainability of smallholder farming systems. This study aimed to explore the contribution of partnership transformation to the economic, social, and environmental sustainability of community-based hybrid corn farming in the Tani Mulyo Farmer Group, Ponorogo, East Java. Methods: A qualitative case study approach was employed. Data were collected through in-depth interviews, focus group discussions, field observations, and document analysis involving members of the Tani Mulyo Farmer Group and relevant stakeholders. Data credibility was strengthened through triangulation, while thematic analysis was used to identify patterns related to farming sustainability. Results: The findings revealed that partnership transformation enhanced farmers’ access to quality inputs, technical assistance, and market opportunities. The partnership also strengthened social capital through increased trust, group cohesion, and collective learning among members. In addition, farmers demonstrated greater adoption of environmentally sustainable practices, including integrated pest management, balanced fertilization, and soil conservation measures. These changes contributed to improved farming resilience and supported the long-term sustainability of hybrid corn production. Conclusion: Agribusiness partnership transformation plays an important role in strengthening the economic resilience, social capacity, and environmental sustainability of community-based hybrid corn farming. The findings highlight the importance of institutional collaboration in promoting sustainable agricultural development and improving the viability of smallholder farming communities.]]>
