Impact of improved common bean varieties on household food security on adopters in Tanzania

Summary

This paper evaluates the impact of improved common bean varieties on food security using two indicators: per capita food consumption expenditure and diet diversity score. A generalised propensity score matching technique and an instrumental variable approach were used to assess the impact of improved bean adoption on household food security outcomes. Results show that the effect of improved common bean adoption is generally positive and increases with the area allocated for improved beans. The study results are useful for designing strategies to address seed access constraints and provide important lessons for breeders working to achieve higher food security outcomes among land-constrained households.