Securing the adoption of scalable agro-educational information and communication technology (ICT) solutions by farmers remains one of the international development community's most elusive goalsin part due to two key gaps in the data: (1) limited comparisons of competing knowledge-delivery methods, and (2) few to no follow-ups on long-term knowledge retention and solution adoption. Addressing both of these gaps, this follow-up study measures farmer knowledge retention and solution adoption two years after being trained on an improved postharvest bean storage method in northern Mozambique. The results found animated-video knowledge delivery at least as effective as a traditional extension approach for knowledge retention (97.9%) and solution adoption (89%). As animated video can more cost-effectively reach the widesteven geographically isolatedpopulations, it readily complements extension services and international development community efforts to secure knowledge transfer and recipient buy-in for innovations. Implications and future research for adult learning are also discussed. KEYWORDS Adoption and diffusion of IT and rate of uptake; development issues; scalable infrastructures for development; development Issues; sustainable development in developing and transition economies; development issues Significance statement This research demonstrates an effective and cost-efficient animated video strategy for securing longterm knowledge retention and increased solution uptake by solution recipients. At a two-year followup assessment of prior training, participant knowledge retention of the steps required for preparing and using an improved postharvest bean storage system was 97.9%, while the adoption rate for the improved storage method was 89%. Among the 104 participants, a total of 96 (92.3%) also reported telling an average 8.49 other farmers about the postharvest bean storage technique, while a total of 57 (54.8%) reported demonstrating the technique to an average 6.35 others.