Extension services are a keystone of information diffusion in agriculture. This paper exploits a large randomized controlled trial to track diffusion of a new technique in the classic Training and Visit (T&V) extension model, relative to a more direct training model. In both control and...

Extension is designed to enable lab-to-farm technology diffusion. Decentralized models assume that information flows from researchers to extension workers,and from extension agents to contact farmers (CFs). CFs should then train other farmers in their communities. Such a modality may fail to...