Abstract: This study was carried out to establish the impact of facilitating farmers’ access to market on adoption of maize cultivation, associated land management practices, identify the major constraints to and socio-economic determinants of adoption in Chahi sub county, Kisoro district, Southwestern Uganda. An Innovation Platform (IP) established to facilitate stakeholder participation in overcoming critical constraints of a potato value-chain was used to promote maize cultivation following exciting experience from potatoes. Data were collected from 180 households in ten participating villages of Chahi sub county. Results show that the number of maize farmers increased from 10-35% while the average maize acreage per household increased from 1.3-2.7 ha. There is also increased use or inorganic fertilizers and more careful treatment of household refuse as manure to improve soil fertility in the maize gardens. The difficulty of acquiring seed, long distance to the maize collection center and lack of knowledge of quality seed are the major constraints facing the maize farmers. Membership to IP, land holding and education level are the household characteristics that influence adoption of the maize technology in Chahi sub county. It is recommended that the IP facilitates linkages with suppliers of quality seed for farmers. Establishing several collection centers for harvested maize would reduce the burden of farmers having to transport maize to the far-off market areas.