From advice to action: Experimental evidence on agroecology messaging in Mali

Agroecological intensification is essential for building sustainable food systems and addressing environmental challenges such as land degradation and climate change, particularly in resource-constrained regions like the Sahel. Scaling agroecological practices requires effective, accessible knowledge-sharing mechanisms. This study evaluates the impact of an interactive voice recording (IVR) training programme on agroecological knowledge and adoption among farmers in Mali's Sikasso region through a randomised controlled trial (RCT). The IVR intervention provided training on intercropping, mulching, composting, and integrated pest management (IPM) using mobile phone technology accessible to farmers without internet access or literacy. Results demonstrated significant improvements in farmers' awareness, information sharing, confidence, and adoption of agroecological practices, with intention-to-treat effects ranging from 12% to 97%. Adoption was notably high for mulching and IPM, highlighting the intervention's potential to induce behavioural change, all the way from phone-based advice to increased confidence and implementation in the field. Using a rigorous RCT approach, this study thus demonstrates how simple digital tools can support agroecological transitions, which ultimately promotes sustainable land management and food security in vulnerable regions.