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

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

Research output: Contribution to journalArticleAcademicpeer-review

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.

LanguageEnglish
Article number104646
JournalWorld Development
Volume124
DOIs
Publication statusPublished - 1 Dec 2019

Fingerprint

food security
Tanzania
nutrition
food
seed
evidence
panel data
promotion
welfare
Disease
crop
participation
effect
Sweetpotato
Nutrition
Food security
household
project

Keywords

  • Biofortified sweetpotato
  • Nutrition and food security impacts
  • Orange-fleshed sweetpotato
  • Quasi-field experiment
  • Tanzania
  • Virus-free

Cite this

Shikuku, Kelvin Mashisia ; Okello, Julius Juma ; Wambugu, Stella ; Sindi, Kirimi ; Low, J.W. ; McEwan, Margaret. / Nutrition and food security impacts of quality seeds of biofortified orange-fleshed sweetpotato: Quasi-experimental evidence from Tanzania. In: World Development. 2019 ; Vol. 124.
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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.",
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Nutrition and food security impacts of quality seeds of biofortified orange-fleshed sweetpotato: Quasi-experimental evidence from Tanzania. / Shikuku, Kelvin Mashisia; Okello, Julius Juma; Wambugu, Stella; Sindi, Kirimi; Low, J.W.; McEwan, Margaret.

In: World Development, Vol. 124, 104646, 01.12.2019.

Research output: Contribution to journalArticleAcademicpeer-review

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AB - 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.

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