The extension intervention has been implemented by the German Agency for International Cooperation and Development (GIZ) with its national partners from the agricultural ministry and offices at different administrative levels.
The core of the extension treatment consists of the (non-random) selection of model farmers, who are trained by public extension agents and provided with inputs to maintain ISFM demonstration plots on their farms. Model farmers lead and train so-called "Farmer Research and Extension Groups" (FREG) consisting of 50 farmers in each mws. In addition, two farmer field days per cropping cycle are conducted. During these field days, model farmers share and discuss their experience with FREG members regarding the implementation of ISFM and its results. Field day activities are mainly targeted to FREG members, although in some communities other farmers do also participate. The extension treatment mainly aims at creating awareness and know-how about ISFM through a knowledge sharing process from development agents to model farmers, and from model farmers to FREG members. Through that entry point, information should diffuse to the broader population of farmers in the communities.
The additional video intervention should serve to provide an additional stimulus to adoption by exposing farmers to information about the ISFM concept with all its individual components, in order to overcome potential incomplete information diffusion between farmers and resulting knowledge gaps. The movie is composed of two parts: A narrative and documentary part which presents the example of a farmer couple who has already successfully implemented the ISFM technologies and visibly increased yields, serving as (potential) role models for treated farmers. The second component of the film consists of animations that visualize processes taking place in the soil – such as hydrological cycles, the “work” of roots, soil organic matter, microorganisms and nutrients. Complex soil processes and the relationship between the individual ISFM components, soil fertility and improved yields are presented in a simplified way.