This study examined the dynamics of fresh yam tuber prices and applied a hedonic pricing model to estimate the market values of tuber characteristics in two consumption centers in Togo. Real prices were modeled as a function of variables measuring yam species, physical attributes of tuber, origin...
Amegbeto, N.K.
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Manyong, Victor M.
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Coulibaly, O.
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Asiedu, Robert
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[Determinants of market value for fresh yam (Dioscorea species) tubers in two consumption centers in Togo]
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Determinants of market value for fresh yam (Dioscorea species) tubers in two consumption centers in Togo
Effect of time of harvest of yam tubers on selected food quality characteristics was investigated to determine when yam tuber is due for harvesting. Setts from five land race varieties of white yam (Dioscorea rotundata) at their post-dormant stage were planted at the beginning of the rainy season...
Akinwande, B.
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Asiedu, Robert
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Adeyemi, I.
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Maziya-Dixon, B.B.
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[Influence of time of harvest on the yield and sensory attributes of white yam (Dioscorea rotundata) in Southwest Nigeria]
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Influence of time of harvest on the yield and sensory attributes of white yam (Dioscorea rotundata) in Southwest Nigeria
L'igname constitue un aliment de base des populations du Nord-est, du centre et de I'Est de la c6te d,lvoire.Elle occupe une place de choix parmi les cultures vivridres du pays. Compte tenu de son importance, lepresent travail est consacr6 d la revue bibliographique des travaux scientifiques r6al...
Yam is the staple food for populations from the Noth-east, Centre and East of Cote d'lvoire. It plays an important role in subsistence cropping in the country. As a result, the present work is devoted to an extensive review of the literature on scientific data gathered on this crop, notably on so...
N'Goran, K.E.
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Zohouri, P.G.
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Yoro, R.G.
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Kouakou, M.A.
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Assa, A.
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Asiedu, Robert
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[Revue bibliographique sur la gestion de la fertilite des sols cultives en igname en Cote dIvoire]
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Revue bibliographique sur la gestion de la fertilite des sols cultives en igname en Cote dIvoire
A reliable means to induce sprouting in dormant seed tubers of yams (Dioscorea species) is required to enhance flexibility in planting date and rate of propagation of the crop. Experiments were conducted to assess the potential of two gibberellin inhibitors, Uniconazole-P and Prohexadione-calcium...
Shiwachi, H.
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Ayankanmi, T.G.
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Asiedu, Robert
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Onjo, M.
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[Induction of germination in dormant yam (Dioscorea spp.) tubers with inhibitors of gibberellins]
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Induction of germination in dormant yam (Dioscorea spp.) tubers with inhibitors of gibberellins
Improving yam production by mineral fertilisation in the savanna zone of Cote d'Ivoire. Côte d'Ivoire is the second producer of yam after Nigeria with 2.8 millions tons produced per year. Though its farmers are still looking for ‘'virgin'' soil to increase their yields. Mineral fertilization stud...
Soro, D.
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Dao, D.
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Carsky, R.J.
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Asiedu, Robert
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Assa, A.
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Girardin, O.
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[Amelioration de la production de ligname a travers la fertilisation minerale en zone de savene de Cote dIvoire]
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Amelioration de la production de ligname a travers la fertilisation minerale en zone de savene de Cote dIvoire
Kumar, P.L.
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Mgbechi-Ezeri, J.U.
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Eni, A.O.
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Akinbade, S.A.
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Asiedu, Robert
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Dixon, Alfred G.O.
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Fatokun, C.A.
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Bandyopadhyay, Ranajit
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[The challenges and potential options for controlling virus diseases of legumes and tuber crops in West Africa]
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The challenges and potential options for controlling virus diseases of legumes and tuber crops in West Africa
For a mixture of reasons certain tropical crops which are important as primary or secondary food staples are relatively underresearched. The modem tools of molecular and cellular biotechnology offer the opportunity not only to make substantial gains in our knowledge of these crops, but also to ov...
Progress is being made at the International Institute for Tropical Agriculture to develop molecular tools for marker-assisted selection that would complement and expedite conventional breeding approaches for genetic improvement of yams (Dioscorea spp.). F1 mapp...
Sartie, A.M.
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Asiedu, Robert
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[Development of mapping populations for genetic analysis in yams (Dioscorea rotundata and D. alata)]
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Development of mapping populations for genetic analysis in yams (Dioscorea rotundata and D. alata)
Experiments were carried out in the laboratory of the International Institute of Tropical Agriculture (IITA) and the Department of Agriculture, University of Reading, UK, to investigate the toxicity of some plant materials against S.bradys. Laboratory investigations confirmed extracts of neem, co...