ArticleGlobal food security2023
Varietal turn-over and their effect on yield and food security - Evidence from 20 years of household surveys in Kenya.
Article in Global food security, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
3 citing papers in PubMed.
- Maize variety traits for different needs: using the means-end chains method to identify preferences and perceived benefits among smallholder farmers in Kenya.Food security · 2026Article
- Genetic trends in the Kenya Highland Maize Breeding Program between 1999 and 2020.Frontiers in plant science · 2024Article
- Seed market dynamics and diffusion of new wheat varieties in Bihar, India: a supply-side perspective.Agricultural and food economics · 2024Article
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Authors and funding
2 authors.
Funding
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Abstract
Agricultural technology is key to food security in SSA, but new maize varieties are not able to replace the old, trusted ones. This study uses data from four representative household surveys conducted in Kenya over 21 years, to show that younger maize varieties have a clear, although limited, effect on yield (4 kg/ha/year controlling for fertilizer) and food security. Unfortunately, this is not sufficient to entice farmers to adopt them, and adoption rates have barely increased despite the market liberalization that brought many private seed companies and their varieties in the market, as the parastatal Kenya Seed Company continues to dominate the market. As a result, in combination with low fertilizer use, yields have stagnated for the last three decennia.
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