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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.
This valuable reference will be useful for both scholars and general readers. It is both botanical and cultural, describing the role of plant in social life, regional customs, the arts, natural and covers all aspects of plant cultivation and migration and covers all aspects of plant cultivation and migration. The text includes an explanation of plant names and a list of general references on the history of useful plants.
Root and tuber crops are important to agriculture, food security and income for 2.2 billion people in developing countries. These species produce large quantities of dietary energy and have stable yields under difficult environmental conditions. This second edition of Tropical Root and Tuber Crops is an authoritative treatment of four important root and tuber crops: cassava. sweet potato, yams, and aroids.
This volume discusses the nutraceutical importance, production technologies, management and cultivation practices of underutilized vegetables, which can be described as those vegetable crops which are neither grown commercially on a large scale nor traded widely. While much of the crops addressed in the book are cultivated, traded and consumed at the local level, there are over 60 species of minor vegetables with high growth and yield potentials that are not cultivated to a large extent for greater populations. This work highlights the production technologies needed to grow these vegetables on a larger scale and under various adverse soil and climatic conditions, and their nutritional and medical benefits to assist with food security, health and poverty alleviation in rural areas. Production of underutilized vegetables is low, due to the unavailability of planting material, lack of awareness about the nutritional and medicinal importance among the farmers and inadequate information on the production techniques of these crops. In this context, there is an urgent need to take up a program on genetic resources exploration, management, utilization, and improvement of underutilized vegetable crops to ensure food and nutritional security. Readers will learn about these technologies and practices, while also learning about the unique properties and benefits of these underutilized vegetables. The book will be useful for academicians and researchers focusing on vegetable production and breeding, as well as farmers and sustainability scientists looking for underexplored sources of nutrition to benefit large rural populations.
A marvelously illustrated reference to the natural wonders of one of the most spectacular places on earth Separated from Africa’s mainland for tens of millions of years, Madagascar has evolved a breathtaking wealth of biodiversity, becoming home to thousands of species found nowhere else on the planet. The New Natural History of Madagascar provides the most comprehensive, up-to-date synthesis available of this island nation’s priceless biological treasures. Now fully revised and expanded, this beautifully illustrated compendium features contributions by more than 600 globally renowned experts who cover the history of scientific exploration in Madagascar, as well as the island’s geology and soils, climate, forest ecology, human ecology, marine and coastal ecosystems, plants, invertebrates, fishes, amphibians, reptiles, birds, and mammals. This invaluable two-volume reference also includes detailed discussions of conservation efforts in Madagascar that showcase several successful protected area programs that can serve as models for threatened ecosystems throughout the world. Provides the most comprehensive overview of Madagascar’s rich natural history Coedited by 18 different specialists Features hundreds of new contributions by world-class experts Includes hundreds of new illustrations Covers a broad array of topics, from geology and climate to animals, plants, and marine life Sheds light on newly discovered species and draws on the latest science An essential resource for anyone interested in Madagascar or tropical ecosystems in general, from biologists and conservationists to ecotourists and armchair naturalists
Set includes revised editions of some issues.
This book is about the pattern of settlement and ecology of the Nuaulu, a group of sedentary swidden cultivators and hunters of southcentral Seram (Eastern Indonesia). It has three inter-related aims: to describe and account for nuaulu settlement; to outline and exemplify a suitable method of assessing the fine inter-action of cultural and ecological variables in small scale communities; and to explore the usefulness of a generative form of analysis in this respect. The fieldwork among the Nuaulu was undertaken between December 1969 and May 1971, and again for three months in 1973. After some basic introductory information, the analysis proceeds by first examining the residential component of the settlement patterns in terms of the processes which determine its location, form and composition. Next, the role of non-domesticated resources in local ecology and the processes of settlement generation in the domesticated component of the Nuaulu environment is investigated. In the final section the general theoretical and methodological issues raised in the introduction are examined in the light of the preceeding analysis.
Mangrove rice farming on West Africa's Rice Coast was the mirror image of tidewater rice plantations worked by enslaved Africans in 18th-century South Carolina and Georgia. This book reconstructs the development of rice-growing technology among the Baga and Nalu of coastal Guinea, beginning more than a millennium before the transatlantic slave trade. It reveals a picture of dynamic pre-colonial coastal societies, quite unlike the static, homogenous pre-modern Africa of previous scholarship. From its examination of inheritance, innovation, and borrowing, Deep Roots fashions a theory of cultural change that encompasses the diversity of communities, cultures, and forms of expression in Africa and the African diaspora.