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Commonly used innovation adoption models indirectly assume homogenous information flow across farmers, which is often not the case. For new and or not well known technologies such as Orange-fleshed sweetpotato (OFSP) varieties, awareness exposure plays an important role in farmers’ decision to ad...


Adekambi, S.Abidin, P.E.Okello, J.J.Carey, E.E.[Awareness exposure and technology adoption: the case of orange-fleshed sweetpotato in West Africa.]Awareness exposure and technology adoption: the case of orange-fleshed sweetpotato in West Africa.

Biofortification of crops as part of the effort to combat micronutrient deficiencies especially in developing countries gaining global recognition. Recent award of world food price to biofortification of staple crops has further energized efforts to promote the cultivation and consumption of biof...


Okello, J.J.Muoki, P.Kwikiriza, N.Wambaya, J.Heck, S.[Effect of agriculture-nutrition education and extension services on early adoption and diffusion of biofortfied crops: The case of orange-fleshed sweetpotato in Kenya]Effect of agriculture-nutrition education and extension services on early adoption and diffusion of biofortfied crops: The case of orange-fleshed sweetpotato in Kenya

Focus on youth has considerably increased throughout the developed and developing countries, especially within Sub-Saharan Africa (SSA) in recent times. Youth are generally considered as key drivers to development of an economy although they face challenges of unemployment. The Information and Co...


Katunyo, P.N.Otieno, D.J.Kosura, W.O.Okello, J.J.[Factors influencing the intensity of use of ICT tools by youth along agricultural value chains: Evidence from Busia County, Kenya.]Factors influencing the intensity of use of ICT tools by youth along agricultural value chains: Evidence from Busia County, Kenya.

This study uses ecological system theory to examine the micro and meso level factors that affect and are affected potato production in Sub-Sahara Africa. It focuses on gender, environmental factors, food security. The data and information used were collected using both qualitative and quantitativ...


Okello, J.J.Kwikiriza, N.Kakuhenzire, R.Parker, M.Schulte-Geldermann, ElmarPambo, K.O.[Micro and meso-level issues affecting potato production and marketing in the tropical highlands of Sub-Saharan Africa: The known and the unknowns]Micro and meso-level issues affecting potato production and marketing in the tropical highlands of Sub-Saharan Africa: The known and the unknowns

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.

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