Abstract
ABSTRACT Clean seed systems for vegetatively propagated crops can play an important part in improving rural livelihoods but continue to face adoption challenges. Using exploratory case-based methodology, this research explored the adoption of a clean seed system for sweet potato (Ipomoea batatas) among farmers in the highlands of Papua New Guinea. The research further explored the outcomes driven by adoption and how system design influences adoption and outcomes. Data were collected through a baseline survey (n = 73) in 2017, and an end-line survey (n = 94) in 2020, with observation and field notes used to validate and verify survey results. Results provide insight into how a pragmatic approach to design, led by local extension staff, can provide a contextually relevant system that inspired widespread adoption. Adoption of clean seed has created a new market for vines, connected commercial farmers and commercial feedlots to improved agricultural inputs while increasing the interest of farmers in investing in complementary technologies to get the most from clean seed.
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