Technology adoption and the multiple dimensions of food security: the case of maize in Tanzania

The paper analyses the impact of adopting new agricultural technologies on the multiple dimensions of food security for maize farmers in Tanzania. Relying on matching techniques, we use a nationally representative dataset collected over the period 2010/2011 to estimate the causal eects of using improved seeds and inorganic fertilizers on four dimensions: availability, access, utilization, and stability. We nd an overall positive and signicant impact on all the dimensions of food security even if substantial dierences are observed. In particular, improved seeds show a stronger eect on food availability and access while inorganic fertilizers guarantee higher stability. In terms of utilization, both technologies increase the diet diversity while only improved seeds reduce the dependence on staple food. The study supports the idea that the relationship between new agricultural technologies and food security is a complex phenomenon which requires a deeper and more thorough investigation.