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Zingiro, A.Okello, J.J.Guthiga, Paul M.[Assessment of adoption and impact of rainwater harvesting technologies on rural farm household income: the case of rainwater harvesting ponds in Rwanda.]Assessment of adoption and impact of rainwater harvesting technologies on rural farm household income: the case of rainwater harvesting ponds in Rwanda.
Wainaina, P.W.Okello, J.J.Nzuma, J.M.[Blessing or evil? Contract farming, smallholder poultry production and household welfare in Kenya.]Blessing or evil? Contract farming, smallholder poultry production and household welfare in Kenya.

Stathers, T.Mulongo, G.Low, J.W.Mbabu, A.N.Rajendran, S.Okello, J.J.Maru, J.Sindi, K.Mudege, Netsayi N.[Everything you ever wanted to know about sweetpotato, Topic 12: Monitoring, learning, and evaluation of sweetpotato projects]Everything you ever wanted to know about sweetpotato, Topic 12: Monitoring, learning, and evaluation of sweetpotato projects

This study used a field experiment and the means-end chain approach to examine the effect of providing information on the biofortification process on consumers' acceptance of orange-fleshed sweetpotato (OFSP). Negative, positive, and neutral information about the biofortification were verbally pr...


Okello, J.J.Lagerkvist, C.J.Muoki, P.Heck, S.Prain, G.[Does information on food production technology affect consumers' acceptance of biofortified foods? Evidence from a field experiment in Kenya.]Does information on food production technology affect consumers' acceptance of biofortified foods? Evidence from a field experiment in Kenya.
Hitayezu, P.Okello, J.J.Obel-Gor, C.[Farm households' participation in rural non-farm employment in post-war Rwanda: Drivers and policy implications.]Farm households' participation in rural non-farm employment in post-war Rwanda: Drivers and policy implications.

Potato yields in sub-Saharan Africa remain very low compared with those of developed countries. Yet potato is major food staple and source of income to the predominantly smallholder growing households in the tropical highlands of this region. A major cause of the low potato yields is the use of p...


Okello, J.J.Zhou, Y.Kwikiriza, N.Ogutu, S.O.Barker, I.Schulte-Geldermann, ElmarAtieno, E.Ahmed, J.T.[Determinants of the use of certified seed potato among smallholder farmers: the case of potato growers in central and eastern Kenya.]Determinants of the use of certified seed potato among smallholder farmers: the case of potato growers in central and eastern Kenya.

The current fight against Vitamin A deficiency has focused on promoting biofortified staples that are rich in beta carotene, such as Orange Fleshed Sweetpotato (OFSP). These efforts usually entail providing quality planting materials to vulnerable households accompanied by sensitization about the...


Mwiti, F.K.Okello, J.J.Munei, K.Low, J.W.[Assessment of farmer willingness to pay for quality planting materials of biofortified and non-biofortified varieties of sweetpotato.]Assessment of farmer willingness to pay for quality planting materials of biofortified and non-biofortified varieties of sweetpotato.

This paper used the propensity score method to assess the effect of using certified seed potato (CSP) on yield, input use, and food security among smallholder farmers. It focused on potato growers in central highlands of Kenya. The study found positive effect using certified seed on both yield an...


Okello, J.J.Zhou, Y.Kwikiriza, N.Ogutu, S.Barker, I.Schulte-Geldermann, ElmarAhmed, J.Atieno, E.[Welfare-environmental quality tradeoffs of promoting use of certified seed potato in tropical highlands of Africa: evidence from central highlands of Kenya.]Welfare-environmental quality tradeoffs of promoting use of certified seed potato in tropical highlands of Africa: evidence from central highlands of Kenya.

This paper combines Just-About-Right (JAR) sensory evaluation and means-end chain (MEC) analysis to examine consumer evaluation of the sensory attributes of conventionally bred biofortified orange-fleshed sweetpotato (OFSP). It specifically examined the role of information on biofortification pro...


Okello, J.J.Lagerkvist, C.J.Muoki, P.Heck, S.Prain, G.[Combining sensory evaluation and mental models in the assessment of consumer preferences for and choice of healthy products: experience from a field experiment in Kenya.]Combining sensory evaluation and mental models in the assessment of consumer preferences for and choice of healthy products: experience from a field experiment in Kenya.

Food insecurity has become a key issue in the field of development in recent years with major inadequate intake of vitamin A-rich foods. Specifically, vitamin A deficiency (VAD) remains a major health problem among poor developing-country households, especially in Africa. Efforts to combat VAD cu...


Okello, J.J.Sindi, K.Shikuku, K.McEwan, M.Low, J.W.[A study of household food security and adoption of biofortified crop varieties in Tanzania: the case of orange-fleshed sweetpotato]A study of household food security and adoption of biofortified crop varieties in Tanzania: the case of orange-fleshed sweetpotato

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