• Known Susceptibilities of Dioscoreaceae - Provides a list of species of yam, both scientific and common names, and the viruses to which each is known to be susceptible.
• On the Bright Side of Yam Production - Nigeria is the leading producer of yams in sub-Saharan Africa but most farmers face problems with declining productivity, disease, cost and scarcity of clean planting material. A project in Kogi States is showing farmers how to grow their own disease free material.
• An Overview of Viruses Infecting Dioscoria Yams in Sub-Saharan Africa - Viruses in yams produce a range of symptoms including mosaics, mottle, distortion, stunting and chlorosis. This article gives details of many of these and their vectors, and suggests ways of growing virus free crops. [PDF]
• Yam Diseases in Ghana - Outlines research into the nature and impact of diseases which may affect the yam crop.
• Yam Virus Diseases in Sub-Saharan Africa - Results of a survey undertaken to try to provide further information on viral infections in this important crop in sub-Saharan Africa. [PDF]

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