he main features of this book are: *Sixteen chapters written by twenty of Nigeria's top agriculturalists give a comprehensive coverage of all aspects of agricultural science and management *Extensively illustrated *Each chapter contains a glossary and a guide to further reading *Practical exercises and revision questions included
Some characteristics of farming in a tropical environment. Shifting cultivation systems. Fallow systems. Ley systems and dairy systems. Systems with permanent upland cultivation. Systems with arable irrigation farming. Systems with perennial crops. Grazing systems. Tendencies in the development of tropical farming systems. Notes of methodology in cropping and farming system research.
The relationships between soils, microbes and humans are of crucial relevance in the tropics, where plant stress and microbial activity are exacerbated. This volume of Soil Biology presents the living component of tropical soils, showing how it is shaped by environmental conditions and emphasizing its dramatic impact on human survival and well-being. Following an introduction to the specificities of tropical soils and of their microbial communities, the biological aspects of soil management are examined, dealing with land use change, conservation and slash-and-burn agriculture, the restoration of hot deserts, agroforestry and paddy rice cultivation. As they are of particular relevance for tropical agriculture, symbioses of plants and microbes are thoroughly covered, as are the biodegradation of pesticides and health risks associated with wastewater irrigation. Lastly, traditional soil knowledge is discussed as a key to our sustainable presence in this world.
In the tropics farmers have to work from a limited resource base which does not lend itself to highly productive crop and animal yields. The principles of farm management economics and the application of farm management analysis and planning can help small farmers in the tropics to produce 'a bit more' from their lots.
Intensified Systems of Farming in the Tropics and Subtropics
Environmentally Sustainable Development Studies and Monographs Series No. 19. Five years have passed since the United Nations Conference on Environment and Development, better known as the Rio Earth Summit. Almost all the countries of the world attended the conference and committed themselves to the policies and programs laid out in Agenda 21, the action plan of the summit. The World Bank and other international agencies have sought to be active partners in implementing the agenda. This report is part of the Bank's current efforts to review the progress made over the past five years and to make plans for improved effectiveness for the future. The paper is divided into two parts. Part I looks at the broad picture, assessing some of the large challenges for the future and outlining thematic principles. Part II provides concise reviews of the majority of the chapters of Agenda 21 and relates them to the standpoint of Bank activities.
Living with the Trees of Life Towards the Transformation of Tropical Agriculture
This book analyses and presents case studies on how agroforestry offers innovative and compelling pathways towards food security, human well-being and environmental sustainability. The book underlines how modern science and improved varieties of trees allied to centuries-old knowledge can provide a new set of marketable products of special importance to poor and marginalized people in the tropics and sub-tropics, while simultaneously rehabilitating degraded land and restoring soil fertility.