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Nutrition and food security impacts of quality seeds of biofortified orange-fleshed sweetpotato: Quasi-experimental evidence from Tanzania

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  • Shikuku, Kelvin Mashisia
  • Okello, Julius Juma
  • Wambugu, Stella
  • Sindi, Kirimi
  • Low, Jan W.
  • McEwan, Margaret

Abstract

This study examined the nutrition and food security impacts of a project that was designed to improve availability of disease-free planting materials of biofortified orange-fleshed sweetpotato (OFSP) in rural Tanzania. Difference-in-difference and matching techniques were employed to estimate causal effects using panel data. Participation in the project increased agronomic and nutritional knowledge of households, raised uptake rate for OFSP varieties, and improved food security status. Effects on nutrition are, however, weak. These results suggest that timely access to quality seeds accompanied by a transfer of skills is important to reduce barriers to adoption of biofortified crops with resulting positive effects on the welfare of rural households. Adequate promotion of both agronomic and nutrition aspects of the technologies may enhance nutrition effects.

Suggested Citation

  • Shikuku, Kelvin Mashisia & Okello, Julius Juma & Wambugu, Stella & Sindi, Kirimi & Low, Jan W. & McEwan, Margaret, 2019. "Nutrition and food security impacts of quality seeds of biofortified orange-fleshed sweetpotato: Quasi-experimental evidence from Tanzania," World Development, Elsevier, vol. 124(C), pages 1-1.
    • Handle: RePEc:eee:wdevel:v:124:y:2019:i:c:29
    DOI: 10.1016/j.worlddev.2019.104646
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    Cited by:

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    2. Habimana, Dominique & Haughton, Jonathan & Nkurunziza, Joseph & Haughton, Dominique Marie-Annick, 2021. "Measuring the impact of unconditional cash transfers on consumption and poverty in Rwanda," World Development Perspectives, Elsevier, vol. 23(C).
    3. David R. Just & Julius J. Okello & Gnel Gabrielyan & Souleimane Adekambi & Norman Kwikiriza & Putri E. Abidin & Edward Carey, 2022. "A Behavioral Intervention Increases Consumption of a New Biofortified Food by School Children: Evidence from a Field Experiment in Nigeria," The European Journal of Development Research, Palgrave Macmillan;European Association of Development Research and Training Institutes (EADI), vol. 34(1), pages 124-146, February.
    4. Seth R. Gitter & James Manley & Jill Bernstein & Paul Winters, 2022. "Do agricultural support and cash transfer programmes improve nutritional status?," Journal of International Development, John Wiley & Sons, Ltd., vol. 34(1), pages 203-235, January.
    5. Gatto, Marcel & Mgomezulu, Wisdom R. & Okello, Julius J. & Pradel, Willy & Kwikiriza, Norman & Hareau, Guy G., 2023. "Direct and spillover effects of biofortified sweetpotato interventions on sustained adoption in Malawi," Food Policy, Elsevier, vol. 121(C).

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