Farmer demand for clean planting material of biofortified and non-biofortified vegetatively propagated crop varieties: The case of sweetpotato
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Date
2020-04Author
Mwiti, Florine K
Okello, Julius J.
Munei, Kimpei
Low, Jan
Type
ArticleLanguage
en_USMetadata
Show full item recordAbstract
Biofortified orange-fleshed sweetpotato (OFSP), rich in beta carotene, is currently being promoted due to its role in fighting vitamin A deficiency. To promote farmer access to OFSP planting material (i.e., vines) projects establish vine multipliers who are expected to operate commercially. However, most sweetpotato farmers are used to getting vines from social networks free of cost. In this study, we compare farmers’ willingness to pay for clean (i.e., pest and disease free) vines of biofortified and popular non-biofortified sweetpotato varieties. The study thus holds vine “health” constant while assessing the influence of vitamin A biofortification on demand. We then use seemingly unrelated regression technique and data from 481 farmers to assess factors affecting the demand for both types of vines. We find higher willingness to pay for clean non-biofortified sweetpotato vines than biofortified sweetpotato vines of similar health, because of the higher nutritional value, good taste, and firmness of the roots of the former. Factors affecting demand for clean vines include the number of children a farmer has, farmer's age, tastes, preferences, sweetpotato yield and income. These effects differ between biofortified and non-biofortified varieties. We conclude that demand for clean OFSP vines is high, but still lower than for white-fleshed varieties, and discuss implications of the findings.
URI
https://www.sciencedirect.com/science/article/pii/S2468227620301381http://erepository.uonbi.ac.ke/handle/11295/109735
Citation
Mwiti, F. K., Okello, J. J., Munei, K., & Low, J. (2020). Farmer demand for clean planting material of biofortified and non-biofortified vegetatively propagated crop varieties: The case of sweetpotato. Scientific African, e00400.Publisher
Elsevie