Within agricultural innovation systems (AIS), various stakeholder groups inevitably interpret 'innovation' from their own vantage point of privilege and power. In rural developing areas where small-scale and subsistence farming systems support livelihoods, dominant policy actors often focus heavily on participatory modernization and commercialization initiatives to enhance productivity, access, and quality. However, existing social hierarchies may undermine the potential of such initiatives to promote inclusive and sustainable farmer-driven innovation. Focusing on the chronically food insecure smallholder agricultural systems operating in Yatta Sub-county, Eastern Kenya, this paper explores how power dynamics between stakeholders can influence, and can be influenced by, participatory agricultural innovation initiatives. Findings suggest that there are often significant disparities in access to, and control over, platform resources between smallholder farmers and other stakeholder groups, resulting in large asymmetries. We discuss how these power dynamics may increase the risk of agricultural intervention, further marginalizing already disempowered groups and reinforcing power hierarchies to the detriment of smallholders. This study highlights the need for a deeper understanding of the institutional contexts that facilitate and maintain relationships of power within agricultural innovation systems, as well as the complexities associated with promoting transformational agricultural innovation.Sustainability 2020, 12, 461 2 of 21 break down barriers to the participation of small-scale farmers in platforms [9][10][11][12][13]. Agricultural innovation platforms have been defined as stakeholder linkages that are purposively created and maintained to address specific agricultural innovation challenges or opportunities [11,[14][15][16][17] within their institutional context [18]. Using innovation platforms to strengthen the social networks that link famers to diverse stakeholders in the agri-food system has the potential to facilitate the identification of collective interests and needs [11], promote greater trust and co-operation [7], and expose individuals to resources and adaptation strategies beyond the realm of their own experience [19,20]. Within smallholder and subsistence farming systems, innovation platforms are generally created through agricultural development initiatives, utilizing participatory and inclusive approaches in order to develop locally appropriate technologies [21] and ensure the equitable participation of all relevant stakeholder groups [22,23].Community-based interventions inherently entail trade-offs between stakeholder groups with varying degrees of power and interest [24], an issue often not well addressed in practice [1,9,[24][25][26]. According to Cullen et al. [1], existing power hierarchies may cause innovation platforms to fall short of their claims of inclusive, farmer-driven innovation, unless thorough consideration is given to issues of power [27]. The participation of smallholder far...