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Over recent years, pest and disease epidemics have affected the reliability of the main food crops in Uganda. Attempts to improve crop diversity therefore, and reduce reliance on the key staple crops, have included the promotion of yam (Dioscorea spp.) through the introduction of improved cultiva...


Coyne, D.L.Kajumba, C.Asiedu, Robert[Expanding guinea yam (Dioscorea spp.) production in Uganda: results of a short survey in Luweero district]Expanding guinea yam (Dioscorea spp.) production in Uganda: results of a short survey in Luweero district

Abele, S.Koper, E.International Institute of Tropical AgricultureAsiedu, RobertBramel-Cox, P.J.Chikoye, D.López, K.[R4D Review 2]R4D Review 2
International Institute of Tropical AgricultureAsiedu, RobertBramel-Cox, P.J.Chikoye, D.Manyong, Victor M.López, K.[R4D Review 3]R4D Review 3

Yam leaves were collected during surveys of major yam producing agro-ecological zones (AEZs) in Ghana (n = 628) and Togo (n = 218) respectively, in 2005. Leaf tissues were tested for Cucumber mosaic virus (CMV), Dioscorea mottle virus (DMoV), Yam mild mosaic virus (YMMV), Yam mosaic virus (YMV) a...


Eni, A.O.Hughes, Jacqueline d'ArrosAsiedu, RobertRey, M.E.C.[Survey of the incidence and distribution of viruses infecting yam (Dioscorea spp.) in Ghana and Togo]Survey of the incidence and distribution of viruses infecting yam (Dioscorea spp.) in Ghana and Togo

The project Poverty Alleviation and Enhanced Food Availability in West Africa through Improved Yam Technologies proposed to improve yam production in five West African countries (Nigeria, Bénin, Togo, Ghana, Côte d’Ivoire) during the period from 2000 to 2003. A recognized need for productive, sta...


Carsky, R.J.Asiedu, RobertCornet, D.[Review of soil fertility management for yambased systems in West Africa]Review of soil fertility management for yambased systems in West Africa

The effects of 0.2% aqueous solution of colchicine on the survival rate and morphological features of five accessions of Dioscorea alata were investigated. Sprouting buds of two month old plants were treated with 0.2% colchicine and their performances were monitored until maturity. Survival of bu...


Ajayi, A.T.Adesoye, A.I.Asiedu, RobertSartie, A.M.[Colchicine-induced variations in survival rate and morphological characteristics of water yam (Dioscorea alata)]Colchicine-induced variations in survival rate and morphological characteristics of water yam (Dioscorea alata)

In variety development, sensory evaluation is not only the most important hurdle after all the necessary agronomic characteristics have been developed but also a major determinant of acceptability of the variety, as well as a major determinant in the subsequent adoption and use of the variety. Ei...


Otoo, E.Asiedu, Robert[Sensory evaluation: the last hurdle in varietal development of yams (Dioscorea rotundata, poir) in Ghana]Sensory evaluation: the last hurdle in varietal development of yams (Dioscorea rotundata, poir) in Ghana

To be sustainable, production in the traditional yam cropping system, faced with declining soil fertility, could benefit from yam–arbuscular mycorrhizal (AM) symbiosis, which can improve nutrient uptake, disease resistance, and drought tolerance in plants. However, only limited information exists...


Dare, M.O.Abaidoo, R.C.Fagbola, O.Asiedu, Robert[Effects of arbuscular mycorrhizal inoculation and phosphorus application on yield and nutrient uptake of yam]Effects of arbuscular mycorrhizal inoculation and phosphorus application on yield and nutrient uptake of yam

Millions of people around the world, particularly in West Africa, depend on yam for food and income, however global yam production has been fluctuating since 2007. Virus infections contribute to yam yield losses and the occurrence of mixed virus infections is potentially catastrophic. Planting of...


Eni, A.Hughes, J.Asiedu, RobertRey, M.[Incidence and diversity of mixed viruses lower in yam tubers and tuber sprouts compared with field leaf samples: Implications for virusfree planting material control strategy]Incidence and diversity of mixed viruses lower in yam tubers and tuber sprouts compared with field leaf samples: Implications for virusfree planting material control strategy

This study investigated the impact of processing on retention of iron and zinc in D. rotundata. Fresh tubers were processed into boiled yam and yam flour and analyzed for zinc, iron, and physicochemical properties. Percent true retention (%TR) was assessed using paired samples and a formula that ...


Maziya-Dixon, B.B.Alamu, E.O.Faustina, Dufie W.M.Asiedu, Robert[Retention of iron and zinc in yam flour and boiled yam processed from white yam (D. rotundata) varieties]Retention of iron and zinc in yam flour and boiled yam processed from white yam (D. rotundata) varieties

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