Download or read book IITA Annual Report and Research Highlights 1986 written by and published by IITA. This book was released on with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book IITA Annual Report and Research Highlights written by International Institute of Tropical Agriculture and published by . This book was released on 1987 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Publications of the International Agricultural Research and Development Centers written by and published by IRRI. This book was released on 1989 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 1985 written by and published by IITA. This book was released on with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ILCA Annual Report 1985 86 written by International Livestock Centre for Africa and published by ILRI (aka ILCA and ILRAD). This book was released on with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Biological Control written by T. W. Fisher and published by Elsevier. This book was released on 1999-09-20 with total page 1073 pages. Available in PDF, EPUB and Kindle. Book excerpt: For many years the use of chemical agents such as pesticides and herbicides has been effective in controlling the many varieties of pests that infest both agricultural crops and backyard gardens. However, these pests are gradually becoming resistant to these agents, because the agents themselves are acting as selective factors making the pests better and better able to resist and persist. As a result, the use of biological controlling agents is increasing. This book is a comprehensive and authoritative handbook of biological control.
Download or read book IITA Research Briefs written by and published by . This book was released on 1981 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Beyond the Green Revolution written by Edward C. Wolf and published by . This book was released on 1986 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: After 20 years, the "green revolution" is generally referred to as a milestone in the international agricultural movement. The introduction of new varieties of wheat and rice, along with fertilizers, pesticides, and mechanized farm equipment has produced a dramatic increase in world food production. This paper assesses the successes of the green revolution in light of its effect upon third world countries. It cautions that the revolutionary gains in agricultural production have not been distributed evenly. This uneven distribution of productivity is discussed in the first chapter, "Productivity Reconsidered." The second chapter, "Beyond the Green Revolution," considers the need for new crop varieties and technologies (including biotechnologies) but argues that tomorrow's innovations must be more consistent with regional agricultural traditions. This approach will help to avoid some of the environmental and social costs associated with the agricultural technologies utilized during the green revolution. The third chapter, "Rediscovering Traditional Agriculture," examines the benefits and limitations of traditional methods of agriculture, indicating that these practices should provide the basis for new practices, rather than be swept aside as archaic. "Toward Appropriate Biotechnology" discusses some of the possible contributions offered by biotechnology as tools for more efficient and sustainable agriculture. The document concludes with a call for additional research in sustainable agriculture productivity. (TW)
Download or read book Alleviating Soil Fertility Constraints to Increased Crop Production in West Africa written by A. Uzo Mokwunye and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tropical Africa escaped from the glaciers that covered the temperate parts of the world during the Ice Age. The legacy is that most of the parent materials of the soils of tropical Africa are old, highly weathered and devoid of bases and phosphate-bearing minerals. Traditional farming systems which were relatively stable and sustainable relied on long fallow periods after one to two years of cropping to maintain the productive capacity of the soils. In recent times and especially in densely populated areas, a sizeable class of 'landless' farmers have begun to cultivate marginal lands or to invade the 'forest reserves' thereby exacerbating the problems of land and environ mental degradation. of soil fertility that will facilitate the production of adequate quantities of the principle Maintaining a level staples has become a major challenge to agricultural scientists in tropical Africa. To increase the nutrient supplying power of soils requires the inputs of fertilizers. These can be organic or inorganic. The efficiency with which these externally supplied inputs can increase agricultural production and reduce soil and environmental deterioration is dependent on the ability of scientists to determine the right types and quantities of the products to apply to each soil, crop and cropping system as well as the ability of farmers to acquire requisite farm manage ment skills.
Download or read book New Serial Titles written by and published by . This book was released on 1990 with total page 2306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Agronomy written by and published by Academic Press. This book was released on 1989-05-18 with total page 465 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Agronomy
Download or read book Soil Management written by Bobby A. Stewart and published by CRC Press. This book was released on 1995-03-09 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: The experiments and experiences discussed in Soil Management carefully document crop production systems with well-defined boundaries. These long-term agronomic trials provide a valuable data resource that has, until now, been largely ignored by both the research community and the sustainability experts. With a rigorous definition of sustainability and this data, the sustainability of various cropping systems will be more clearly illustrated than any previous effort. Particular emphasis is given to research involving the tropics and sub-tropics. This book is unique in providing an experimental basis for sustainable management of soil resources. It describes technological options for sustainable management of soil resources and identifies priorities for additional long-term experimentation needed in key ecoregions. Topics discussed include changes in soil processes and properties, environmental quality, soil management, soil dynamics, soil organic matter, and nutrient cycling. Soil Management is for those who ask whether agriculture is sustainable, want to analyze or review sustainability experiments and experiences, or wish to initiate new long-term trials. It is a valuable reference on soil processes and an excellent text for courses in soil management.
Download or read book Global Food Progress 1991 written by Dennis T. Avery and published by . This book was released on 1991 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book State of the World written by Lester Russell Brown and published by . This book was released on 1988 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Roots Tubers and Legumes written by Klaus Klennert and published by . This book was released on 1989 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book African Books in Print written by and published by . This book was released on 1993 with total page 940 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil and Soil Fertility Management Research in Sub Saharan Africa written by Henk Mutsaers and published by Taylor & Francis. This book was released on 2017-03-27 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Judicious soil fertility management is crucial for sustainable crop production and food security in sub-Saharan Africa (SSA). This book describes the various concepts and approaches underlying soil and soil fertility management research in SSA over the last fifty years. It provides examples of important innovations generated and assesses the position of research within the research-to-development continuum, including how innovations have been validated with the intended beneficiaries. Using the experience of the International Institute of Tropical Agriculture (IITA) as a case study, the authors analyse how processes, partnerships and other factors have affected research priorities, the delivery of outputs, and their uptake by farming communities in SSA. They evaluate both successes and failures of past investments in soil fertility research and important lessons learnt which provide crucial information for national and international scientists currently engaged in this research area. The book is organised in a number of chapters each covering a chronological period characterised by its primary research content and approaches and by the dominant research paradigms and delivery models.
