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The Yam
This study of the dioscorea genus or yam, consisting of 600 species, is a synthesis of new information. In this world of famine, the yam must play a leading role in the regions it is grown. Its cultivation may even increase once the problems which this book highlights have been resolved. The text fills a critical gap, summarizing what is known about the yam; it is also significant because it asks many questions, and encourages further experimentation.
Biodiversity and Domestication of Yams in West Africa
A study of yam domestication practices among smallholders has provided an insight into how farmers exploit wild plant genetic resources so as to adapt them to agriculture. This book describes the domestication operations leading to Dioscorea rotundata yams in Africa. The biodiversity of these yams and of their wild relatives is investigated, and the authors put forward hypotheses to explain the phenotypic changes resulting from smallholder practices. These hypotheses could be possible lines of research for breeders.
Yams
Dioscorea species, commonly known as yams, are tuberous plants that constitute a major staple food in many parts of Africa, South East Asia, Latin America and the South Pacific. Yams are cultivated in about 50 mainly tropical countries, and the world annual production of edible tubers is around 73 million tonnes. This book evaluates the current state of knowledge about yams, and how this knowledge affects practices in production, cultivation and postharvest technology. Dioscorea is a diverse genus in terms of its geographical origin, domestication, morphology, chemistry and breeding. Therefore, besides concentrating on the dozen or so species that are used as major food crops, the book examines species that have limited commercial or domestic value at present, but have the potential in future to contribute to the production and utilization of this crop.
The New Yam Festival
There is a proverb in Iboland that says, "When the harvest season ends, it is the time of the year when everybody is at home." The Yam Festival has come to an end, and The New Yam Festival has begun. It is an extraordinary celebration of the harvest season, the culture, and oral traditions of the people who live in the village of Uwaoma. It is also an occasion for giving thanks to all the gods of the land for making the harvest possible. Achuwanike was the first yam farmer in his village to win a yam title at The Yam Festival. Now that the harvest season is over, he is in close communion with his family, relatives, neighbors, friends, and the spirits of the ancestors of the past, present, and future for the next harvest season.
Yam in West Africa
Yam in West Africa examines a crop that has been sidelined and ignored for too long while being central to the existence of so many and consumed worldwide. Though the crop can attract high prices, too often its producers live in penury. Nweke investigates problems of labor, technology, and agronomy in the West African yam industry in hopes of bettering the future of the yam and those who produce and eat it.
Yam Nutrition
"This book draws together what is currently known about the mineral nutrition of yams. Most of the information on nutrient deficiencies and toxicities has not been published elsewhere. It is intended as a useful reference for agronomists and extension personnel, and also researchers." --Website.
